/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:07:32,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:07:32,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:07:32,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:07:32,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:07:32,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:07:32,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:07:32,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:07:32,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:07:32,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:07:32,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:07:32,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:07:32,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:07:32,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:07:32,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:07:32,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:07:32,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:07:32,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:07:32,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:07:32,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:07:32,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:07:32,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:07:32,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:07:32,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:07:32,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:07:32,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:07:32,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:07:32,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:07:32,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:07:32,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:07:32,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:07:32,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:07:32,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:07:32,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:07:32,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:07:32,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:07:32,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:07:32,325 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:07:32,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:07:32,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:07:32,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:07:32,328 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:07:32,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:07:32,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:07:32,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:07:32,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:07:32,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:07:32,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:07:32,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:07:32,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:07:32,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:07:32,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:07:32,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:07:32,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:07:32,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:07:32,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:07:32,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:07:32,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:07:32,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:07:32,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:07:32,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:07:32,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:07:32,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:07:32,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:07:32,334 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:07:32,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:07:32,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:07:32,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:07:32,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:07:32,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:07:32,643 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:07:32,644 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-1.i [2020-10-05 23:07:32,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ff3c04e/26cfd855cede445b8cb4239a5a8d145e/FLAGf67d0fa95 [2020-10-05 23:07:33,253 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:07:33,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longer-1.i [2020-10-05 23:07:33,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ff3c04e/26cfd855cede445b8cb4239a5a8d145e/FLAGf67d0fa95 [2020-10-05 23:07:33,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ff3c04e/26cfd855cede445b8cb4239a5a8d145e [2020-10-05 23:07:33,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:07:33,611 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:07:33,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:07:33,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:07:33,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:07:33,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:07:33" (1/1) ... [2020-10-05 23:07:33,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eab1ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:33, skipping insertion in model container [2020-10-05 23:07:33,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:07:33" (1/1) ... [2020-10-05 23:07:33,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:07:33,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:07:34,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:07:34,112 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:07:34,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:07:34,265 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:07:34,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34 WrapperNode [2020-10-05 23:07:34,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:07:34,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:07:34,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:07:34,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:07:34,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:07:34,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:07:34,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:07:34,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:07:34,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... [2020-10-05 23:07:34,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:07:34,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:07:34,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:07:34,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:07:34,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:07:34,412 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-05 23:07:34,412 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-05 23:07:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-05 23:07:34,413 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-05 23:07:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:07:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 23:07:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:07:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:07:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 23:07:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:07:34,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:07:34,416 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:07:34,701 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:07:34,702 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-05 23:07:34,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:07:34 BoogieIcfgContainer [2020-10-05 23:07:34,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:07:34,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:07:34,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:07:34,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:07:34,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:07:33" (1/3) ... [2020-10-05 23:07:34,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0c56e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:07:34, skipping insertion in model container [2020-10-05 23:07:34,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:07:34" (2/3) ... [2020-10-05 23:07:34,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0c56e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:07:34, skipping insertion in model container [2020-10-05 23:07:34,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:07:34" (3/3) ... [2020-10-05 23:07:34,716 INFO L109 eAbstractionObserver]: Analyzing ICFG fib_bench_longer-1.i [2020-10-05 23:07:34,731 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:07:34,731 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:07:34,747 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:07:34,748 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:07:34,798 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,798 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,798 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,799 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,800 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,800 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,800 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,801 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,801 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,801 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,802 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,802 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,803 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,803 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,803 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,804 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,804 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,805 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,805 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,805 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,806 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,806 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,806 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,819 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,820 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,820 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,820 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,821 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,821 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,824 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,832 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,833 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,833 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,833 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,834 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,834 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,845 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,845 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,846 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,846 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,846 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,846 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:07:34,863 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-05 23:07:34,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:07:34,888 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:07:34,888 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:07:34,888 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:07:34,888 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:07:34,888 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:07:34,889 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:07:34,889 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:07:34,904 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-05 23:07:34,906 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-05 23:07:34,945 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-05 23:07:34,946 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:07:34,952 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 5/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-05 23:07:34,954 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-05 23:07:34,973 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-05 23:07:34,973 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:07:34,979 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 5/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-05 23:07:34,981 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1032 [2020-10-05 23:07:34,983 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:07:36,020 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-05 23:07:36,105 INFO L206 etLargeBlockEncoding]: Checked pairs total: 879 [2020-10-05 23:07:36,106 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-10-05 23:07:36,110 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-05 23:07:36,124 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-05 23:07:36,126 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-05 23:07:36,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 23:07:36,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:36,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-05 23:07:36,156 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:36,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:36,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1506398721, now seen corresponding path program 1 times [2020-10-05 23:07:36,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:36,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450188101] [2020-10-05 23:07:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:36,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450188101] [2020-10-05 23:07:36,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:36,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:07:36,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714074573] [2020-10-05 23:07:36,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 23:07:36,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:36,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 23:07:36,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 23:07:36,448 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-05 23:07:36,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:36,521 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-05 23:07:36,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:07:36,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-05 23:07:36,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:36,536 INFO L225 Difference]: With dead ends: 83 [2020-10-05 23:07:36,536 INFO L226 Difference]: Without dead ends: 54 [2020-10-05 23:07:36,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:07:36,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-05 23:07:36,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-05 23:07:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-05 23:07:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-05 23:07:36,615 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-05 23:07:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:36,616 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-05 23:07:36,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 23:07:36,617 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-05 23:07:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:07:36,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:36,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:36,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:07:36,632 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:36,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:36,633 INFO L82 PathProgramCache]: Analyzing trace with hash 235327157, now seen corresponding path program 1 times [2020-10-05 23:07:36,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:36,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035268768] [2020-10-05 23:07:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:36,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035268768] [2020-10-05 23:07:36,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:36,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:07:36,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958914565] [2020-10-05 23:07:36,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:07:36,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:36,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:07:36,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:07:36,755 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-05 23:07:36,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:36,807 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-05 23:07:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:07:36,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 23:07:36,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:36,809 INFO L225 Difference]: With dead ends: 80 [2020-10-05 23:07:36,810 INFO L226 Difference]: Without dead ends: 75 [2020-10-05 23:07:36,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:07:36,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-05 23:07:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-05 23:07:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-05 23:07:36,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-05 23:07:36,821 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-05 23:07:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:36,822 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-05 23:07:36,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:07:36,823 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-05 23:07:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:07:36,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:36,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:36,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:07:36,824 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:36,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:36,825 INFO L82 PathProgramCache]: Analyzing trace with hash -244746376, now seen corresponding path program 1 times [2020-10-05 23:07:36,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:36,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377254450] [2020-10-05 23:07:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:36,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377254450] [2020-10-05 23:07:36,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:36,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:07:36,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20505913] [2020-10-05 23:07:36,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:07:36,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:36,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:07:36,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:07:36,903 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-05 23:07:36,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:36,929 INFO L93 Difference]: Finished difference Result 73 states and 170 transitions. [2020-10-05 23:07:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:07:36,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 23:07:36,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:36,931 INFO L225 Difference]: With dead ends: 73 [2020-10-05 23:07:36,932 INFO L226 Difference]: Without dead ends: 70 [2020-10-05 23:07:36,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:07:36,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-05 23:07:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-05 23:07:36,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-05 23:07:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 152 transitions. [2020-10-05 23:07:36,944 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 152 transitions. Word has length 8 [2020-10-05 23:07:36,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:36,945 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 152 transitions. [2020-10-05 23:07:36,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:07:36,945 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 152 transitions. [2020-10-05 23:07:36,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:07:36,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:36,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:36,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:07:36,950 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:36,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:36,950 INFO L82 PathProgramCache]: Analyzing trace with hash -244724056, now seen corresponding path program 2 times [2020-10-05 23:07:36,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:36,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599480519] [2020-10-05 23:07:36,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:37,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599480519] [2020-10-05 23:07:37,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:37,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:07:37,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788026285] [2020-10-05 23:07:37,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:07:37,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:37,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:07:37,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:07:37,058 INFO L87 Difference]: Start difference. First operand 64 states and 152 transitions. Second operand 5 states. [2020-10-05 23:07:37,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:37,137 INFO L93 Difference]: Finished difference Result 86 states and 202 transitions. [2020-10-05 23:07:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:07:37,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 23:07:37,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:37,141 INFO L225 Difference]: With dead ends: 86 [2020-10-05 23:07:37,141 INFO L226 Difference]: Without dead ends: 80 [2020-10-05 23:07:37,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:07:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-05 23:07:37,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-05 23:07:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-05 23:07:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-05 23:07:37,152 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-05 23:07:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:37,152 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-05 23:07:37,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:07:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-05 23:07:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:07:37,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:37,154 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:37,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:07:37,154 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:37,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:37,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1294770680, now seen corresponding path program 2 times [2020-10-05 23:07:37,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:37,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118213495] [2020-10-05 23:07:37,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:37,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118213495] [2020-10-05 23:07:37,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220971335] [2020-10-05 23:07:37,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:37,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:37,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:37,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 23:07:37,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:37,368 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:37,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:37,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-05 23:07:37,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758914159] [2020-10-05 23:07:37,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 23:07:37,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:37,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 23:07:37,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:07:37,394 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-05 23:07:37,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:37,465 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-05 23:07:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:37,465 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-05 23:07:37,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:37,467 INFO L225 Difference]: With dead ends: 101 [2020-10-05 23:07:37,467 INFO L226 Difference]: Without dead ends: 96 [2020-10-05 23:07:37,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:37,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-05 23:07:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-05 23:07:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-05 23:07:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-05 23:07:37,476 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-05 23:07:37,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:37,476 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-05 23:07:37,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 23:07:37,476 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-05 23:07:37,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:07:37,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:37,477 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:37,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:37,692 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:37,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1002797622, now seen corresponding path program 3 times [2020-10-05 23:07:37,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:37,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079470099] [2020-10-05 23:07:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:37,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079470099] [2020-10-05 23:07:37,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019053366] [2020-10-05 23:07:37,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:37,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:37,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:37,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 23:07:37,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:37,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:37,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 23:07:37,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080240180] [2020-10-05 23:07:37,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 23:07:37,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:37,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 23:07:37,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:07:37,906 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-05 23:07:37,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:37,956 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions. [2020-10-05 23:07:37,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:07:37,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 23:07:37,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:37,958 INFO L225 Difference]: With dead ends: 84 [2020-10-05 23:07:37,958 INFO L226 Difference]: Without dead ends: 81 [2020-10-05 23:07:37,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:07:37,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-05 23:07:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-05 23:07:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-05 23:07:37,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 179 transitions. [2020-10-05 23:07:37,965 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 179 transitions. Word has length 9 [2020-10-05 23:07:37,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:37,966 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 179 transitions. [2020-10-05 23:07:37,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 23:07:37,966 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 179 transitions. [2020-10-05 23:07:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:07:37,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:37,967 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:38,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:38,182 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:38,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:38,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1003489542, now seen corresponding path program 4 times [2020-10-05 23:07:38,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:38,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101254398] [2020-10-05 23:07:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:38,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101254398] [2020-10-05 23:07:38,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998203345] [2020-10-05 23:07:38,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:38,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:38,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:38,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 23:07:38,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:38,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:38,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 23:07:38,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732548237] [2020-10-05 23:07:38,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 23:07:38,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:38,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 23:07:38,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:07:38,356 INFO L87 Difference]: Start difference. First operand 74 states and 179 transitions. Second operand 9 states. [2020-10-05 23:07:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:38,409 INFO L93 Difference]: Finished difference Result 90 states and 213 transitions. [2020-10-05 23:07:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:07:38,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 23:07:38,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:38,411 INFO L225 Difference]: With dead ends: 90 [2020-10-05 23:07:38,411 INFO L226 Difference]: Without dead ends: 87 [2020-10-05 23:07:38,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:07:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-05 23:07:38,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-05 23:07:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-05 23:07:38,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 186 transitions. [2020-10-05 23:07:38,418 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 186 transitions. Word has length 9 [2020-10-05 23:07:38,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:38,419 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 186 transitions. [2020-10-05 23:07:38,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 23:07:38,419 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 186 transitions. [2020-10-05 23:07:38,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:07:38,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:38,420 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:38,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:38,621 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:38,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:38,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1003511862, now seen corresponding path program 5 times [2020-10-05 23:07:38,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:38,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043073979] [2020-10-05 23:07:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:38,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043073979] [2020-10-05 23:07:38,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244371519] [2020-10-05 23:07:38,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:38,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:38,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:38,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 23:07:38,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:38,794 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:38,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:38,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 23:07:38,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529462030] [2020-10-05 23:07:38,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 23:07:38,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:38,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 23:07:38,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:07:38,811 INFO L87 Difference]: Start difference. First operand 76 states and 186 transitions. Second operand 9 states. [2020-10-05 23:07:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:38,922 INFO L93 Difference]: Finished difference Result 99 states and 237 transitions. [2020-10-05 23:07:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:38,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 23:07:38,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:38,924 INFO L225 Difference]: With dead ends: 99 [2020-10-05 23:07:38,924 INFO L226 Difference]: Without dead ends: 93 [2020-10-05 23:07:38,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:07:38,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-05 23:07:38,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-10-05 23:07:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-05 23:07:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-05 23:07:38,933 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-10-05 23:07:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:38,933 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-05 23:07:38,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 23:07:38,933 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-05 23:07:38,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:38,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:38,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:39,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:39,136 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:39,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1491235988, now seen corresponding path program 1 times [2020-10-05 23:07:39,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:39,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020227600] [2020-10-05 23:07:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:39,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020227600] [2020-10-05 23:07:39,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:39,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:07:39,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023074660] [2020-10-05 23:07:39,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:07:39,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:39,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:07:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:07:39,198 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-10-05 23:07:39,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:39,226 INFO L93 Difference]: Finished difference Result 92 states and 220 transitions. [2020-10-05 23:07:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:07:39,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 23:07:39,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:39,227 INFO L225 Difference]: With dead ends: 92 [2020-10-05 23:07:39,228 INFO L226 Difference]: Without dead ends: 90 [2020-10-05 23:07:39,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:07:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-05 23:07:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2020-10-05 23:07:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-05 23:07:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-05 23:07:39,234 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 10 [2020-10-05 23:07:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:39,234 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-05 23:07:39,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:07:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-05 23:07:39,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:39,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:39,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:39,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 23:07:39,236 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:39,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:39,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1490572898, now seen corresponding path program 2 times [2020-10-05 23:07:39,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:39,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484841357] [2020-10-05 23:07:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:39,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:39,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484841357] [2020-10-05 23:07:39,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:39,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:07:39,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201536070] [2020-10-05 23:07:39,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:07:39,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:39,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:07:39,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:07:39,306 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-05 23:07:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:39,355 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2020-10-05 23:07:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:07:39,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 23:07:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:39,358 INFO L225 Difference]: With dead ends: 100 [2020-10-05 23:07:39,358 INFO L226 Difference]: Without dead ends: 98 [2020-10-05 23:07:39,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:07:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-05 23:07:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-05 23:07:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-05 23:07:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 200 transitions. [2020-10-05 23:07:39,364 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 200 transitions. Word has length 10 [2020-10-05 23:07:39,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:39,364 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 200 transitions. [2020-10-05 23:07:39,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:07:39,364 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 200 transitions. [2020-10-05 23:07:39,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:39,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:39,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:39,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 23:07:39,366 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:39,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1490550578, now seen corresponding path program 3 times [2020-10-05 23:07:39,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:39,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711038774] [2020-10-05 23:07:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:39,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711038774] [2020-10-05 23:07:39,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:39,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:07:39,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470036500] [2020-10-05 23:07:39,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:07:39,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:39,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:07:39,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:07:39,466 INFO L87 Difference]: Start difference. First operand 83 states and 200 transitions. Second operand 6 states. [2020-10-05 23:07:39,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:39,532 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-05 23:07:39,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:39,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 23:07:39,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:39,533 INFO L225 Difference]: With dead ends: 105 [2020-10-05 23:07:39,533 INFO L226 Difference]: Without dead ends: 100 [2020-10-05 23:07:39,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:07:39,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-05 23:07:39,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-05 23:07:39,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-05 23:07:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 198 transitions. [2020-10-05 23:07:39,546 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 198 transitions. Word has length 10 [2020-10-05 23:07:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:39,546 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 198 transitions. [2020-10-05 23:07:39,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:07:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 198 transitions. [2020-10-05 23:07:39,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:39,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:39,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:39,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-05 23:07:39,548 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:39,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:39,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1490521748, now seen corresponding path program 4 times [2020-10-05 23:07:39,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:39,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114424674] [2020-10-05 23:07:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:39,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:39,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114424674] [2020-10-05 23:07:39,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:07:39,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 23:07:39,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345114214] [2020-10-05 23:07:39,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:07:39,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:39,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:07:39,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:07:39,604 INFO L87 Difference]: Start difference. First operand 82 states and 198 transitions. Second operand 6 states. [2020-10-05 23:07:39,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:39,676 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-05 23:07:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:39,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 23:07:39,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:39,677 INFO L225 Difference]: With dead ends: 105 [2020-10-05 23:07:39,678 INFO L226 Difference]: Without dead ends: 100 [2020-10-05 23:07:39,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:07:39,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-05 23:07:39,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-05 23:07:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-05 23:07:39,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-05 23:07:39,683 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-05 23:07:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:39,683 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-05 23:07:39,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:07:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-05 23:07:39,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:39,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:39,684 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:39,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-05 23:07:39,685 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:39,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:39,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1483163371, now seen corresponding path program 3 times [2020-10-05 23:07:39,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:39,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480916955] [2020-10-05 23:07:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:39,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480916955] [2020-10-05 23:07:39,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969719005] [2020-10-05 23:07:39,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:39,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:39,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:39,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:39,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:39,862 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:39,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:39,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-05 23:07:39,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879779192] [2020-10-05 23:07:39,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-05 23:07:39,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:39,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-05 23:07:39,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:07:39,887 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-05 23:07:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:39,996 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-05 23:07:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:39,997 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-05 23:07:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:39,998 INFO L225 Difference]: With dead ends: 122 [2020-10-05 23:07:39,998 INFO L226 Difference]: Without dead ends: 117 [2020-10-05 23:07:39,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:07:40,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-05 23:07:40,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-05 23:07:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-05 23:07:40,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-05 23:07:40,005 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-05 23:07:40,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:40,006 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-05 23:07:40,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-05 23:07:40,006 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-05 23:07:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:40,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:40,008 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:40,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-05 23:07:40,221 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:40,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:40,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1021955896, now seen corresponding path program 6 times [2020-10-05 23:07:40,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:40,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009610502] [2020-10-05 23:07:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:40,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009610502] [2020-10-05 23:07:40,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658955322] [2020-10-05 23:07:40,326 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:40,370 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:07:40,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:40,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:40,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:40,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:40,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:40,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742668271] [2020-10-05 23:07:40,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:40,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:40,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:40,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:40,457 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-05 23:07:40,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:40,501 INFO L93 Difference]: Finished difference Result 108 states and 255 transitions. [2020-10-05 23:07:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:07:40,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 23:07:40,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:40,503 INFO L225 Difference]: With dead ends: 108 [2020-10-05 23:07:40,503 INFO L226 Difference]: Without dead ends: 105 [2020-10-05 23:07:40,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:40,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-05 23:07:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-05 23:07:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-05 23:07:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-10-05 23:07:40,508 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 10 [2020-10-05 23:07:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:40,508 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-10-05 23:07:40,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-10-05 23:07:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:40,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:40,509 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:40,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:40,710 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:40,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:40,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1043405416, now seen corresponding path program 7 times [2020-10-05 23:07:40,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:40,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151426013] [2020-10-05 23:07:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:40,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151426013] [2020-10-05 23:07:40,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071723687] [2020-10-05 23:07:40,789 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:40,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:40,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:40,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:40,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:40,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208993376] [2020-10-05 23:07:40,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:40,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:40,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:40,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:40,969 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 11 states. [2020-10-05 23:07:41,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:41,038 INFO L93 Difference]: Finished difference Result 116 states and 270 transitions. [2020-10-05 23:07:41,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:07:41,039 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 23:07:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:41,040 INFO L225 Difference]: With dead ends: 116 [2020-10-05 23:07:41,040 INFO L226 Difference]: Without dead ends: 113 [2020-10-05 23:07:41,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:07:41,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-05 23:07:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2020-10-05 23:07:41,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-05 23:07:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-10-05 23:07:41,046 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 10 [2020-10-05 23:07:41,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:41,046 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-10-05 23:07:41,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-10-05 23:07:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:41,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:41,048 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:41,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-05 23:07:41,261 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:41,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1044097336, now seen corresponding path program 8 times [2020-10-05 23:07:41,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:41,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391086505] [2020-10-05 23:07:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:41,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391086505] [2020-10-05 23:07:41,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578945492] [2020-10-05 23:07:41,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:41,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:41,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:41,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:41,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:41,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:41,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:41,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022644558] [2020-10-05 23:07:41,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:41,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:41,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:41,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:41,484 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 11 states. [2020-10-05 23:07:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:41,566 INFO L93 Difference]: Finished difference Result 115 states and 270 transitions. [2020-10-05 23:07:41,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:41,567 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 23:07:41,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:41,569 INFO L225 Difference]: With dead ends: 115 [2020-10-05 23:07:41,569 INFO L226 Difference]: Without dead ends: 112 [2020-10-05 23:07:41,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-05 23:07:41,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-05 23:07:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-05 23:07:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 230 transitions. [2020-10-05 23:07:41,575 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 230 transitions. Word has length 10 [2020-10-05 23:07:41,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:41,575 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 230 transitions. [2020-10-05 23:07:41,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 230 transitions. [2020-10-05 23:07:41,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:07:41,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:41,576 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:41,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-05 23:07:41,787 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:41,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:41,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1044119656, now seen corresponding path program 9 times [2020-10-05 23:07:41,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:41,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412477573] [2020-10-05 23:07:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:41,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412477573] [2020-10-05 23:07:41,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119071459] [2020-10-05 23:07:41,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:41,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:41,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:41,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:41,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:41,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:41,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:41,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:41,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995393368] [2020-10-05 23:07:41,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:41,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:41,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:41,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:41,963 INFO L87 Difference]: Start difference. First operand 94 states and 230 transitions. Second operand 11 states. [2020-10-05 23:07:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:42,083 INFO L93 Difference]: Finished difference Result 124 states and 294 transitions. [2020-10-05 23:07:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:42,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 23:07:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:42,084 INFO L225 Difference]: With dead ends: 124 [2020-10-05 23:07:42,085 INFO L226 Difference]: Without dead ends: 118 [2020-10-05 23:07:42,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:07:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-05 23:07:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2020-10-05 23:07:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-05 23:07:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-05 23:07:42,090 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-05 23:07:42,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:42,090 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-05 23:07:42,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-05 23:07:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:42,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:42,091 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:42,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-05 23:07:42,303 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:42,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:42,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1016324353, now seen corresponding path program 5 times [2020-10-05 23:07:42,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:42,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510388999] [2020-10-05 23:07:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:42,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:42,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510388999] [2020-10-05 23:07:42,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104622672] [2020-10-05 23:07:42,380 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:42,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:42,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:42,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:42,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:42,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:42,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:42,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441827398] [2020-10-05 23:07:42,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:42,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:42,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:42,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:42,519 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-05 23:07:42,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:42,562 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-05 23:07:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:07:42,563 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:42,564 INFO L225 Difference]: With dead ends: 113 [2020-10-05 23:07:42,564 INFO L226 Difference]: Without dead ends: 111 [2020-10-05 23:07:42,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-05 23:07:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-05 23:07:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-05 23:07:42,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-05 23:07:42,568 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-05 23:07:42,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:42,568 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-05 23:07:42,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:42,569 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-05 23:07:42,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:42,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:42,569 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:42,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-05 23:07:42,780 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:42,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:42,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1016325314, now seen corresponding path program 6 times [2020-10-05 23:07:42,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:42,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147777939] [2020-10-05 23:07:42,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:42,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147777939] [2020-10-05 23:07:42,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745280137] [2020-10-05 23:07:42,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:42,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:07:42,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:42,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:42,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:43,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:43,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:43,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124410178] [2020-10-05 23:07:43,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:43,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:43,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:43,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:43,003 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 11 states. [2020-10-05 23:07:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:43,067 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-05 23:07:43,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:07:43,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:43,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:43,069 INFO L225 Difference]: With dead ends: 118 [2020-10-05 23:07:43,069 INFO L226 Difference]: Without dead ends: 116 [2020-10-05 23:07:43,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-05 23:07:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-05 23:07:43,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-05 23:07:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-05 23:07:43,074 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-05 23:07:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:43,074 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-05 23:07:43,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-05 23:07:43,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:43,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:43,075 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:43,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:43,288 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:43,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:43,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1016354144, now seen corresponding path program 7 times [2020-10-05 23:07:43,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:43,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210690901] [2020-10-05 23:07:43,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:43,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210690901] [2020-10-05 23:07:43,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443179153] [2020-10-05 23:07:43,364 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:43,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:43,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:43,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:43,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:43,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436744966] [2020-10-05 23:07:43,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:43,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:43,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:43,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:43,469 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 11 states. [2020-10-05 23:07:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:43,553 INFO L93 Difference]: Finished difference Result 119 states and 282 transitions. [2020-10-05 23:07:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:07:43,559 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:43,560 INFO L225 Difference]: With dead ends: 119 [2020-10-05 23:07:43,561 INFO L226 Difference]: Without dead ends: 117 [2020-10-05 23:07:43,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:43,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-05 23:07:43,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-10-05 23:07:43,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-05 23:07:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions. [2020-10-05 23:07:43,565 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 11 [2020-10-05 23:07:43,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:43,565 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 241 transitions. [2020-10-05 23:07:43,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:43,566 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions. [2020-10-05 23:07:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:43,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:43,566 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:43,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:43,777 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:43,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:43,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1036880143, now seen corresponding path program 8 times [2020-10-05 23:07:43,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:43,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529605766] [2020-10-05 23:07:43,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:43,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529605766] [2020-10-05 23:07:43,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506605559] [2020-10-05 23:07:43,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:43,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:43,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:43,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:43,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:44,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:44,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:44,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707015310] [2020-10-05 23:07:44,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:44,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:44,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:44,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:44,003 INFO L87 Difference]: Start difference. First operand 98 states and 241 transitions. Second operand 11 states. [2020-10-05 23:07:44,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:44,059 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-05 23:07:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:07:44,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:44,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:44,061 INFO L225 Difference]: With dead ends: 122 [2020-10-05 23:07:44,061 INFO L226 Difference]: Without dead ends: 120 [2020-10-05 23:07:44,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:07:44,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-05 23:07:44,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2020-10-05 23:07:44,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-05 23:07:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 247 transitions. [2020-10-05 23:07:44,068 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 247 transitions. Word has length 11 [2020-10-05 23:07:44,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:44,068 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 247 transitions. [2020-10-05 23:07:44,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:44,069 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 247 transitions. [2020-10-05 23:07:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:44,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:44,069 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:44,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-05 23:07:44,281 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:44,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1036881104, now seen corresponding path program 9 times [2020-10-05 23:07:44,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:44,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338645715] [2020-10-05 23:07:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:44,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338645715] [2020-10-05 23:07:44,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895878977] [2020-10-05 23:07:44,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:44,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:44,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:44,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:44,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:44,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:44,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:44,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124515845] [2020-10-05 23:07:44,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:44,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:44,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:44,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:44,480 INFO L87 Difference]: Start difference. First operand 100 states and 247 transitions. Second operand 11 states. [2020-10-05 23:07:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:44,569 INFO L93 Difference]: Finished difference Result 123 states and 290 transitions. [2020-10-05 23:07:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:44,569 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:44,570 INFO L225 Difference]: With dead ends: 123 [2020-10-05 23:07:44,571 INFO L226 Difference]: Without dead ends: 121 [2020-10-05 23:07:44,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:07:44,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-05 23:07:44,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-05 23:07:44,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 23:07:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 243 transitions. [2020-10-05 23:07:44,576 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 243 transitions. Word has length 11 [2020-10-05 23:07:44,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:44,576 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 243 transitions. [2020-10-05 23:07:44,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 243 transitions. [2020-10-05 23:07:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:44,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:44,577 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:44,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:44,788 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:44,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1037543233, now seen corresponding path program 10 times [2020-10-05 23:07:44,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:44,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958101388] [2020-10-05 23:07:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:44,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958101388] [2020-10-05 23:07:44,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858759554] [2020-10-05 23:07:44,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:44,925 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:44,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:44,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:44,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:45,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:45,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:45,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645973858] [2020-10-05 23:07:45,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:45,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:45,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:45,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:45,003 INFO L87 Difference]: Start difference. First operand 99 states and 243 transitions. Second operand 11 states. [2020-10-05 23:07:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:45,079 INFO L93 Difference]: Finished difference Result 123 states and 287 transitions. [2020-10-05 23:07:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:45,080 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:45,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:45,081 INFO L225 Difference]: With dead ends: 123 [2020-10-05 23:07:45,081 INFO L226 Difference]: Without dead ends: 121 [2020-10-05 23:07:45,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:45,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-05 23:07:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2020-10-05 23:07:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-05 23:07:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 249 transitions. [2020-10-05 23:07:45,086 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 249 transitions. Word has length 11 [2020-10-05 23:07:45,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:45,087 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 249 transitions. [2020-10-05 23:07:45,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:45,087 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 249 transitions. [2020-10-05 23:07:45,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:45,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:45,090 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:45,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-05 23:07:45,300 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:45,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1037565553, now seen corresponding path program 11 times [2020-10-05 23:07:45,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:45,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468601109] [2020-10-05 23:07:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:45,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468601109] [2020-10-05 23:07:45,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667212435] [2020-10-05 23:07:45,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:45,415 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:45,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:45,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:45,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:45,484 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:45,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:45,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:45,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906354802] [2020-10-05 23:07:45,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:45,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:45,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:45,525 INFO L87 Difference]: Start difference. First operand 103 states and 249 transitions. Second operand 11 states. [2020-10-05 23:07:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:45,701 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-05 23:07:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:45,701 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:45,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:45,703 INFO L225 Difference]: With dead ends: 133 [2020-10-05 23:07:45,703 INFO L226 Difference]: Without dead ends: 128 [2020-10-05 23:07:45,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:07:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-05 23:07:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-10-05 23:07:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-05 23:07:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 247 transitions. [2020-10-05 23:07:45,708 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 247 transitions. Word has length 11 [2020-10-05 23:07:45,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:45,708 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 247 transitions. [2020-10-05 23:07:45,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 247 transitions. [2020-10-05 23:07:45,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:45,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:45,709 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:45,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:45,922 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:45,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1037573024, now seen corresponding path program 12 times [2020-10-05 23:07:45,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:45,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546813708] [2020-10-05 23:07:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:45,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546813708] [2020-10-05 23:07:45,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964651644] [2020-10-05 23:07:45,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:46,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:07:46,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:46,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:46,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:46,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:46,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:46,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349628778] [2020-10-05 23:07:46,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:46,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:46,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:46,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:46,105 INFO L87 Difference]: Start difference. First operand 102 states and 247 transitions. Second operand 11 states. [2020-10-05 23:07:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:46,229 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-05 23:07:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:46,229 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:46,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:46,231 INFO L225 Difference]: With dead ends: 127 [2020-10-05 23:07:46,231 INFO L226 Difference]: Without dead ends: 125 [2020-10-05 23:07:46,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:07:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-05 23:07:46,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2020-10-05 23:07:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-05 23:07:46,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-05 23:07:46,238 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-05 23:07:46,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:46,238 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-05 23:07:46,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:46,239 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-05 23:07:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:46,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:46,240 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:46,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-05 23:07:46,454 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:46,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:46,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1037594383, now seen corresponding path program 13 times [2020-10-05 23:07:46,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:46,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435168885] [2020-10-05 23:07:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:46,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435168885] [2020-10-05 23:07:46,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438524267] [2020-10-05 23:07:46,523 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:46,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:46,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:46,646 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:46,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:46,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:46,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297712462] [2020-10-05 23:07:46,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:46,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:46,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:46,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:46,660 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-05 23:07:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:46,869 INFO L93 Difference]: Finished difference Result 141 states and 334 transitions. [2020-10-05 23:07:46,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:07:46,870 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:46,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:46,872 INFO L225 Difference]: With dead ends: 141 [2020-10-05 23:07:46,872 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 23:07:46,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:07:46,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 23:07:46,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2020-10-05 23:07:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-05 23:07:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-05 23:07:46,879 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-05 23:07:46,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:46,880 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-05 23:07:46,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-05 23:07:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:46,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:46,880 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:47,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-05 23:07:47,084 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:47,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:47,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1037595344, now seen corresponding path program 14 times [2020-10-05 23:07:47,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:47,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309647073] [2020-10-05 23:07:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:47,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309647073] [2020-10-05 23:07:47,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767381981] [2020-10-05 23:07:47,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:47,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:47,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:47,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:47,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:47,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:47,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:47,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:47,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450234121] [2020-10-05 23:07:47,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:47,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:47,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:47,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:47,279 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-05 23:07:47,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:47,430 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-10-05 23:07:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:47,431 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:47,432 INFO L225 Difference]: With dead ends: 136 [2020-10-05 23:07:47,432 INFO L226 Difference]: Without dead ends: 131 [2020-10-05 23:07:47,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:07:47,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-05 23:07:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101. [2020-10-05 23:07:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 23:07:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 245 transitions. [2020-10-05 23:07:47,436 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 245 transitions. Word has length 11 [2020-10-05 23:07:47,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:47,436 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 245 transitions. [2020-10-05 23:07:47,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:47,437 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 245 transitions. [2020-10-05 23:07:47,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:47,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:47,437 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:47,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-05 23:07:47,649 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:47,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:47,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1037803664, now seen corresponding path program 15 times [2020-10-05 23:07:47,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:47,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338615649] [2020-10-05 23:07:47,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:47,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338615649] [2020-10-05 23:07:47,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690038479] [2020-10-05 23:07:47,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:47,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:47,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:47,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:47,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:47,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:47,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:47,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364294207] [2020-10-05 23:07:47,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:47,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:47,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:47,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:47,807 INFO L87 Difference]: Start difference. First operand 101 states and 245 transitions. Second operand 11 states. [2020-10-05 23:07:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:47,900 INFO L93 Difference]: Finished difference Result 130 states and 301 transitions. [2020-10-05 23:07:47,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:47,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:47,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:47,905 INFO L225 Difference]: With dead ends: 130 [2020-10-05 23:07:47,905 INFO L226 Difference]: Without dead ends: 128 [2020-10-05 23:07:47,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:07:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-05 23:07:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2020-10-05 23:07:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 23:07:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-05 23:07:47,909 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-05 23:07:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:47,910 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-05 23:07:47,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-05 23:07:47,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:47,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:47,911 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:48,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-05 23:07:48,111 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:48,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:48,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1038466754, now seen corresponding path program 16 times [2020-10-05 23:07:48,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:48,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62228995] [2020-10-05 23:07:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:48,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62228995] [2020-10-05 23:07:48,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050468261] [2020-10-05 23:07:48,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:48,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:48,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:48,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:48,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:48,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:48,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:48,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764998311] [2020-10-05 23:07:48,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:48,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:48,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:48,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:48,276 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-05 23:07:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:48,400 INFO L93 Difference]: Finished difference Result 131 states and 303 transitions. [2020-10-05 23:07:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:07:48,400 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:48,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:48,402 INFO L225 Difference]: With dead ends: 131 [2020-10-05 23:07:48,402 INFO L226 Difference]: Without dead ends: 129 [2020-10-05 23:07:48,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:07:48,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-05 23:07:48,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-10-05 23:07:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 23:07:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-05 23:07:48,407 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-05 23:07:48,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:48,408 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-05 23:07:48,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:48,408 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-05 23:07:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:48,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:48,409 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:48,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-05 23:07:48,610 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:48,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:48,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1038488113, now seen corresponding path program 17 times [2020-10-05 23:07:48,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:48,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840956871] [2020-10-05 23:07:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:48,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840956871] [2020-10-05 23:07:48,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594247056] [2020-10-05 23:07:48,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:48,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:48,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:48,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:48,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:48,782 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:48,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:48,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:48,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845927895] [2020-10-05 23:07:48,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:48,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:48,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:48,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:48,792 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-05 23:07:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:48,929 INFO L93 Difference]: Finished difference Result 131 states and 311 transitions. [2020-10-05 23:07:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:48,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:48,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:48,931 INFO L225 Difference]: With dead ends: 131 [2020-10-05 23:07:48,931 INFO L226 Difference]: Without dead ends: 126 [2020-10-05 23:07:48,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:07:48,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-05 23:07:48,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2020-10-05 23:07:48,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 23:07:48,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-05 23:07:48,937 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-05 23:07:48,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:48,937 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-05 23:07:48,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:48,937 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-05 23:07:48,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:48,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:48,938 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:49,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:49,139 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:49,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:49,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1038489074, now seen corresponding path program 18 times [2020-10-05 23:07:49,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:49,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091765402] [2020-10-05 23:07:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:49,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091765402] [2020-10-05 23:07:49,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555593200] [2020-10-05 23:07:49,192 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:49,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:07:49,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:49,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:49,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:49,284 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:49,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:49,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:49,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376790325] [2020-10-05 23:07:49,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:49,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:49,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:49,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:49,293 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-05 23:07:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:49,522 INFO L93 Difference]: Finished difference Result 145 states and 339 transitions. [2020-10-05 23:07:49,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:07:49,523 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:49,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:49,524 INFO L225 Difference]: With dead ends: 145 [2020-10-05 23:07:49,524 INFO L226 Difference]: Without dead ends: 140 [2020-10-05 23:07:49,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:07:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-05 23:07:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-10-05 23:07:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 23:07:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-05 23:07:49,529 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-05 23:07:49,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:49,529 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-05 23:07:49,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-05 23:07:49,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:49,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:49,530 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:49,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-05 23:07:49,740 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:49,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1038517904, now seen corresponding path program 19 times [2020-10-05 23:07:49,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:49,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031923099] [2020-10-05 23:07:49,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:49,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031923099] [2020-10-05 23:07:49,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205387128] [2020-10-05 23:07:49,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:49,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:07:49,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:49,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:49,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:49,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 23:07:49,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593422733] [2020-10-05 23:07:49,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:07:49,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:49,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:07:49,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:07:49,923 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-05 23:07:50,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:50,096 INFO L93 Difference]: Finished difference Result 135 states and 315 transitions. [2020-10-05 23:07:50,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:50,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 23:07:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:50,098 INFO L225 Difference]: With dead ends: 135 [2020-10-05 23:07:50,098 INFO L226 Difference]: Without dead ends: 130 [2020-10-05 23:07:50,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:07:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-05 23:07:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2020-10-05 23:07:50,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-05 23:07:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-05 23:07:50,103 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-05 23:07:50,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:50,103 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-05 23:07:50,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:07:50,104 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-05 23:07:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:50,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:50,104 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:50,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:50,315 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:50,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:50,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1266597800, now seen corresponding path program 4 times [2020-10-05 23:07:50,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:50,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019049621] [2020-10-05 23:07:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:50,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019049621] [2020-10-05 23:07:50,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034607368] [2020-10-05 23:07:50,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:50,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:50,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:50,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:50,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:50,540 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:07:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:50,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:50,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-05 23:07:50,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31781308] [2020-10-05 23:07:50,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-05 23:07:50,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:50,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-05 23:07:50,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:07:50,563 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-05 23:07:50,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:50,681 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-05 23:07:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:07:50,682 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-05 23:07:50,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:50,683 INFO L225 Difference]: With dead ends: 143 [2020-10-05 23:07:50,683 INFO L226 Difference]: Without dead ends: 138 [2020-10-05 23:07:50,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:07:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-05 23:07:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-05 23:07:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-05 23:07:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-05 23:07:50,690 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-05 23:07:50,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:50,690 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-05 23:07:50,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-05 23:07:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-05 23:07:50,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:50,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:50,691 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:50,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-05 23:07:50,902 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:50,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:50,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1615862390, now seen corresponding path program 10 times [2020-10-05 23:07:50,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:50,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687299598] [2020-10-05 23:07:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:50,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687299598] [2020-10-05 23:07:50,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627050327] [2020-10-05 23:07:50,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:51,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:51,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:51,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:51,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:51,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:51,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:51,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278370629] [2020-10-05 23:07:51,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:51,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:51,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:51,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:51,123 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-05 23:07:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:51,169 INFO L93 Difference]: Finished difference Result 132 states and 311 transitions. [2020-10-05 23:07:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:07:51,170 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 23:07:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:51,171 INFO L225 Difference]: With dead ends: 132 [2020-10-05 23:07:51,172 INFO L226 Difference]: Without dead ends: 129 [2020-10-05 23:07:51,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-05 23:07:51,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2020-10-05 23:07:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-05 23:07:51,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-05 23:07:51,177 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-05 23:07:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:51,177 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-05 23:07:51,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-05 23:07:51,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:51,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:51,178 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:51,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-05 23:07:51,388 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:51,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:51,389 INFO L82 PathProgramCache]: Analyzing trace with hash -2014169786, now seen corresponding path program 11 times [2020-10-05 23:07:51,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:51,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387991838] [2020-10-05 23:07:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:51,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387991838] [2020-10-05 23:07:51,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596917762] [2020-10-05 23:07:51,473 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:51,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:07:51,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:51,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:51,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:51,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:51,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:51,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593905997] [2020-10-05 23:07:51,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:51,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:51,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:51,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:51,646 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-05 23:07:51,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:51,719 INFO L93 Difference]: Finished difference Result 143 states and 332 transitions. [2020-10-05 23:07:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:51,719 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 23:07:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:51,721 INFO L225 Difference]: With dead ends: 143 [2020-10-05 23:07:51,721 INFO L226 Difference]: Without dead ends: 140 [2020-10-05 23:07:51,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:07:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-05 23:07:51,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-10-05 23:07:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-05 23:07:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-05 23:07:51,727 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-05 23:07:51,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:51,728 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-05 23:07:51,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:51,728 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-05 23:07:51,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:51,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:51,729 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:51,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-05 23:07:51,943 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:51,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1992720266, now seen corresponding path program 12 times [2020-10-05 23:07:51,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:51,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633107523] [2020-10-05 23:07:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:52,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633107523] [2020-10-05 23:07:52,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520839539] [2020-10-05 23:07:52,036 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:52,100 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:07:52,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:52,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:52,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:52,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:52,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:52,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708328055] [2020-10-05 23:07:52,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:52,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:52,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:52,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:52,225 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-05 23:07:52,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:52,328 INFO L93 Difference]: Finished difference Result 142 states and 332 transitions. [2020-10-05 23:07:52,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:52,329 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 23:07:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:52,331 INFO L225 Difference]: With dead ends: 142 [2020-10-05 23:07:52,331 INFO L226 Difference]: Without dead ends: 139 [2020-10-05 23:07:52,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:07:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-05 23:07:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-10-05 23:07:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-05 23:07:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-05 23:07:52,337 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 11 [2020-10-05 23:07:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:52,338 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-05 23:07:52,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-05 23:07:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:52,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:52,339 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:52,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-05 23:07:52,552 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:52,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:52,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1992028346, now seen corresponding path program 13 times [2020-10-05 23:07:52,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:52,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180462477] [2020-10-05 23:07:52,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:52,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180462477] [2020-10-05 23:07:52,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021241635] [2020-10-05 23:07:52,616 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:52,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:52,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:52,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:52,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:52,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192979914] [2020-10-05 23:07:52,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:52,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:52,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:52,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:52,750 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-05 23:07:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:52,853 INFO L93 Difference]: Finished difference Result 141 states and 332 transitions. [2020-10-05 23:07:52,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:52,853 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 23:07:52,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:52,854 INFO L225 Difference]: With dead ends: 141 [2020-10-05 23:07:52,854 INFO L226 Difference]: Without dead ends: 138 [2020-10-05 23:07:52,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:07:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-05 23:07:52,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 114. [2020-10-05 23:07:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-05 23:07:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 282 transitions. [2020-10-05 23:07:52,859 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 282 transitions. Word has length 11 [2020-10-05 23:07:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:52,860 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 282 transitions. [2020-10-05 23:07:52,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 282 transitions. [2020-10-05 23:07:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:07:52,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:52,861 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:53,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-05 23:07:53,072 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:53,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1992006026, now seen corresponding path program 14 times [2020-10-05 23:07:53,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:53,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755664184] [2020-10-05 23:07:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:53,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755664184] [2020-10-05 23:07:53,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767614203] [2020-10-05 23:07:53,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:53,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:53,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:53,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:53,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:53,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:53,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:53,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:53,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496033792] [2020-10-05 23:07:53,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:53,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:53,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:53,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:53,356 INFO L87 Difference]: Start difference. First operand 114 states and 282 transitions. Second operand 13 states. [2020-10-05 23:07:53,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:53,543 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-05 23:07:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:07:53,544 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 23:07:53,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:53,546 INFO L225 Difference]: With dead ends: 150 [2020-10-05 23:07:53,546 INFO L226 Difference]: Without dead ends: 144 [2020-10-05 23:07:53,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:07:53,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-05 23:07:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-05 23:07:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-05 23:07:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-05 23:07:53,552 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-05 23:07:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:53,552 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-05 23:07:53,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-05 23:07:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:53,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:53,553 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:53,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:53,766 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:53,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1441283596, now seen corresponding path program 20 times [2020-10-05 23:07:53,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:53,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584410553] [2020-10-05 23:07:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:53,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584410553] [2020-10-05 23:07:53,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439000990] [2020-10-05 23:07:53,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:53,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:53,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:53,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:53,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:54,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:54,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:54,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365771742] [2020-10-05 23:07:54,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:54,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:54,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:54,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:54,024 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-05 23:07:54,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:54,068 INFO L93 Difference]: Finished difference Result 138 states and 332 transitions. [2020-10-05 23:07:54,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:07:54,069 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:54,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:54,070 INFO L225 Difference]: With dead ends: 138 [2020-10-05 23:07:54,070 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 23:07:54,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:54,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 23:07:54,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-05 23:07:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-05 23:07:54,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 294 transitions. [2020-10-05 23:07:54,074 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 294 transitions. Word has length 12 [2020-10-05 23:07:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:54,075 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 294 transitions. [2020-10-05 23:07:54,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:54,075 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 294 transitions. [2020-10-05 23:07:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:54,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:54,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:54,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-05 23:07:54,287 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:54,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1441284557, now seen corresponding path program 21 times [2020-10-05 23:07:54,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:54,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039660112] [2020-10-05 23:07:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:54,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039660112] [2020-10-05 23:07:54,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446156902] [2020-10-05 23:07:54,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:54,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:54,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:54,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:54,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:54,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:54,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:54,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494298706] [2020-10-05 23:07:54,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:54,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:54,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:54,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:54,507 INFO L87 Difference]: Start difference. First operand 117 states and 294 transitions. Second operand 13 states. [2020-10-05 23:07:54,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:54,617 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-05 23:07:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:54,618 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:54,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:54,619 INFO L225 Difference]: With dead ends: 145 [2020-10-05 23:07:54,620 INFO L226 Difference]: Without dead ends: 143 [2020-10-05 23:07:54,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:07:54,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-05 23:07:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-05 23:07:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-05 23:07:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2020-10-05 23:07:54,624 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 12 [2020-10-05 23:07:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:54,624 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2020-10-05 23:07:54,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2020-10-05 23:07:54,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:54,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:54,625 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:54,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-05 23:07:54,837 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:54,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1441313387, now seen corresponding path program 22 times [2020-10-05 23:07:54,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:54,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937372975] [2020-10-05 23:07:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:54,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937372975] [2020-10-05 23:07:54,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513461183] [2020-10-05 23:07:54,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:54,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:54,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:54,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:54,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:55,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:55,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:55,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243568449] [2020-10-05 23:07:55,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:55,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:55,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:55,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:55,030 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand 13 states. [2020-10-05 23:07:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:55,154 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-05 23:07:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:55,154 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:55,156 INFO L225 Difference]: With dead ends: 150 [2020-10-05 23:07:55,156 INFO L226 Difference]: Without dead ends: 148 [2020-10-05 23:07:55,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:07:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-05 23:07:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-05 23:07:55,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-05 23:07:55,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-05 23:07:55,161 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-05 23:07:55,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:55,162 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-05 23:07:55,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-05 23:07:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:55,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:55,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:55,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:55,373 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:55,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:55,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1442207117, now seen corresponding path program 23 times [2020-10-05 23:07:55,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:55,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922590622] [2020-10-05 23:07:55,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:55,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:55,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922590622] [2020-10-05 23:07:55,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902986790] [2020-10-05 23:07:55,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:55,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:07:55,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:55,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:55,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:55,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:55,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:55,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387664989] [2020-10-05 23:07:55,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:55,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:55,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:55,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:55,599 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 13 states. [2020-10-05 23:07:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:55,725 INFO L93 Difference]: Finished difference Result 148 states and 352 transitions. [2020-10-05 23:07:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:55,726 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:55,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:55,727 INFO L225 Difference]: With dead ends: 148 [2020-10-05 23:07:55,727 INFO L226 Difference]: Without dead ends: 146 [2020-10-05 23:07:55,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:07:55,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-05 23:07:55,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-10-05 23:07:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:07:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-05 23:07:55,731 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-05 23:07:55,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:55,731 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-05 23:07:55,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:55,732 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-05 23:07:55,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:55,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:55,733 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:55,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-05 23:07:55,943 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1442208078, now seen corresponding path program 24 times [2020-10-05 23:07:55,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:55,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543865634] [2020-10-05 23:07:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:56,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543865634] [2020-10-05 23:07:56,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740121265] [2020-10-05 23:07:56,016 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:56,057 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:07:56,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:56,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:56,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:56,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:56,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:56,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111073742] [2020-10-05 23:07:56,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:56,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:56,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:56,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:56,153 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-05 23:07:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:56,270 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-05 23:07:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:56,271 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:56,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:56,272 INFO L225 Difference]: With dead ends: 149 [2020-10-05 23:07:56,272 INFO L226 Difference]: Without dead ends: 147 [2020-10-05 23:07:56,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:07:56,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-05 23:07:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2020-10-05 23:07:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 23:07:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 293 transitions. [2020-10-05 23:07:56,276 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 293 transitions. Word has length 12 [2020-10-05 23:07:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:56,276 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 293 transitions. [2020-10-05 23:07:56,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 293 transitions. [2020-10-05 23:07:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:56,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:56,277 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:56,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:56,488 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:56,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:56,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2078513086, now seen corresponding path program 25 times [2020-10-05 23:07:56,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:56,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897533517] [2020-10-05 23:07:56,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:56,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897533517] [2020-10-05 23:07:56,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715867995] [2020-10-05 23:07:56,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:56,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:56,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:56,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:56,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:56,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772301338] [2020-10-05 23:07:56,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:56,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:56,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:56,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:56,718 INFO L87 Difference]: Start difference. First operand 118 states and 293 transitions. Second operand 13 states. [2020-10-05 23:07:56,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:56,790 INFO L93 Difference]: Finished difference Result 152 states and 360 transitions. [2020-10-05 23:07:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:07:56,790 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:56,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:56,791 INFO L225 Difference]: With dead ends: 152 [2020-10-05 23:07:56,791 INFO L226 Difference]: Without dead ends: 150 [2020-10-05 23:07:56,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:07:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-05 23:07:56,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-10-05 23:07:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 23:07:56,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 305 transitions. [2020-10-05 23:07:56,795 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 305 transitions. Word has length 12 [2020-10-05 23:07:56,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:56,795 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 305 transitions. [2020-10-05 23:07:56,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 305 transitions. [2020-10-05 23:07:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:56,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:56,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:56,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-05 23:07:56,996 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:56,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:56,997 INFO L82 PathProgramCache]: Analyzing trace with hash 2078514047, now seen corresponding path program 26 times [2020-10-05 23:07:56,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:56,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981885104] [2020-10-05 23:07:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:57,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981885104] [2020-10-05 23:07:57,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144563979] [2020-10-05 23:07:57,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:57,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:57,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:57,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:57,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:57,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:57,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:57,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559613377] [2020-10-05 23:07:57,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:57,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:57,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:57,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:57,210 INFO L87 Difference]: Start difference. First operand 122 states and 305 transitions. Second operand 13 states. [2020-10-05 23:07:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:57,348 INFO L93 Difference]: Finished difference Result 153 states and 361 transitions. [2020-10-05 23:07:57,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:07:57,348 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:57,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:57,350 INFO L225 Difference]: With dead ends: 153 [2020-10-05 23:07:57,350 INFO L226 Difference]: Without dead ends: 151 [2020-10-05 23:07:57,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:07:57,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-05 23:07:57,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2020-10-05 23:07:57,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:07:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-05 23:07:57,354 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-05 23:07:57,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:57,354 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-05 23:07:57,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-05 23:07:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:57,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:57,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:57,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-05 23:07:57,566 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:57,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:57,566 INFO L82 PathProgramCache]: Analyzing trace with hash 2078542877, now seen corresponding path program 27 times [2020-10-05 23:07:57,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:57,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757275460] [2020-10-05 23:07:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:57,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757275460] [2020-10-05 23:07:57,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387724389] [2020-10-05 23:07:57,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:57,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:07:57,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:57,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:57,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:57,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:57,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:57,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157622320] [2020-10-05 23:07:57,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:57,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:57,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:57,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:57,784 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-05 23:07:57,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:57,949 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-05 23:07:57,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:07:57,951 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:57,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:57,953 INFO L225 Difference]: With dead ends: 156 [2020-10-05 23:07:57,953 INFO L226 Difference]: Without dead ends: 154 [2020-10-05 23:07:57,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:07:57,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-05 23:07:57,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119. [2020-10-05 23:07:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-05 23:07:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-05 23:07:57,958 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-05 23:07:57,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:57,958 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-05 23:07:57,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-05 23:07:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:57,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:57,959 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:58,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-05 23:07:58,160 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:58,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:58,160 INFO L82 PathProgramCache]: Analyzing trace with hash 2099068876, now seen corresponding path program 28 times [2020-10-05 23:07:58,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:58,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000945574] [2020-10-05 23:07:58,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:58,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000945574] [2020-10-05 23:07:58,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74893593] [2020-10-05 23:07:58,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:58,287 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:07:58,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:58,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:58,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:58,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:58,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:58,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511678744] [2020-10-05 23:07:58,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:58,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:58,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:58,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:58,385 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 13 states. [2020-10-05 23:07:58,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:58,469 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-05 23:07:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:07:58,469 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:58,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:58,471 INFO L225 Difference]: With dead ends: 148 [2020-10-05 23:07:58,471 INFO L226 Difference]: Without dead ends: 146 [2020-10-05 23:07:58,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:07:58,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-05 23:07:58,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-05 23:07:58,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 23:07:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-05 23:07:58,475 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-05 23:07:58,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:58,475 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-05 23:07:58,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-05 23:07:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:58,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:58,476 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:58,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-05 23:07:58,677 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:58,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2099069837, now seen corresponding path program 29 times [2020-10-05 23:07:58,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:58,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648582772] [2020-10-05 23:07:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:58,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648582772] [2020-10-05 23:07:58,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631123029] [2020-10-05 23:07:58,755 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:58,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:07:58,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:58,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:58,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:58,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:58,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:58,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181084057] [2020-10-05 23:07:58,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:58,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:58,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:58,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:58,901 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-05 23:07:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:59,050 INFO L93 Difference]: Finished difference Result 157 states and 368 transitions. [2020-10-05 23:07:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:07:59,051 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:07:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:59,053 INFO L225 Difference]: With dead ends: 157 [2020-10-05 23:07:59,053 INFO L226 Difference]: Without dead ends: 155 [2020-10-05 23:07:59,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:07:59,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-05 23:07:59,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2020-10-05 23:07:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:07:59,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 297 transitions. [2020-10-05 23:07:59,057 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 297 transitions. Word has length 12 [2020-10-05 23:07:59,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:59,057 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 297 transitions. [2020-10-05 23:07:59,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:07:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 297 transitions. [2020-10-05 23:07:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:59,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:59,058 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:59,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:59,269 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:59,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:59,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2099731966, now seen corresponding path program 30 times [2020-10-05 23:07:59,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:59,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426569513] [2020-10-05 23:07:59,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:59,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426569513] [2020-10-05 23:07:59,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646139614] [2020-10-05 23:07:59,337 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:59,377 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:07:59,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:07:59,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:07:59,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:59,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:59,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-05 23:07:59,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281925411] [2020-10-05 23:07:59,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 23:07:59,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:59,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 23:07:59,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:07:59,404 INFO L87 Difference]: Start difference. First operand 120 states and 297 transitions. Second operand 9 states. [2020-10-05 23:07:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:07:59,489 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-05 23:07:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:07:59,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-05 23:07:59,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:07:59,491 INFO L225 Difference]: With dead ends: 149 [2020-10-05 23:07:59,491 INFO L226 Difference]: Without dead ends: 147 [2020-10-05 23:07:59,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:07:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-05 23:07:59,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2020-10-05 23:07:59,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 23:07:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 23:07:59,498 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 23:07:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:07:59,498 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 23:07:59,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 23:07:59,498 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 23:07:59,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:07:59,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:07:59,499 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:07:59,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-05 23:07:59,702 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:07:59,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:07:59,702 INFO L82 PathProgramCache]: Analyzing trace with hash 2099754286, now seen corresponding path program 31 times [2020-10-05 23:07:59,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:07:59,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141395973] [2020-10-05 23:07:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:07:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:59,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141395973] [2020-10-05 23:07:59,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910676089] [2020-10-05 23:07:59,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:07:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:07:59,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:07:59,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:07:59,893 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:07:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:07:59,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:07:59,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:07:59,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187858405] [2020-10-05 23:07:59,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:07:59,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:07:59,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:07:59,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:07:59,926 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 23:08:00,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:00,176 INFO L93 Difference]: Finished difference Result 164 states and 389 transitions. [2020-10-05 23:08:00,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:00,176 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:00,178 INFO L225 Difference]: With dead ends: 164 [2020-10-05 23:08:00,178 INFO L226 Difference]: Without dead ends: 159 [2020-10-05 23:08:00,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-05 23:08:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-05 23:08:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 23:08:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions. [2020-10-05 23:08:00,182 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 12 [2020-10-05 23:08:00,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:00,182 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 296 transitions. [2020-10-05 23:08:00,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions. [2020-10-05 23:08:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:00,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:00,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:00,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-05 23:08:00,396 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:00,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2099761757, now seen corresponding path program 32 times [2020-10-05 23:08:00,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:00,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806961832] [2020-10-05 23:08:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:00,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806961832] [2020-10-05 23:08:00,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96434517] [2020-10-05 23:08:00,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:00,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:00,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:00,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:00,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:00,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:00,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:00,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602586154] [2020-10-05 23:08:00,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:00,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:00,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:00,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:00,621 INFO L87 Difference]: Start difference. First operand 122 states and 296 transitions. Second operand 13 states. [2020-10-05 23:08:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:00,804 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-05 23:08:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:08:00,805 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:00,806 INFO L225 Difference]: With dead ends: 156 [2020-10-05 23:08:00,806 INFO L226 Difference]: Without dead ends: 154 [2020-10-05 23:08:00,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:08:00,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-05 23:08:00,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-10-05 23:08:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 23:08:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 23:08:00,811 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 23:08:00,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:00,811 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 23:08:00,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:00,812 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 23:08:00,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:00,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:00,813 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:01,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:01,014 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:01,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:01,014 INFO L82 PathProgramCache]: Analyzing trace with hash 2099783116, now seen corresponding path program 33 times [2020-10-05 23:08:01,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:01,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921890867] [2020-10-05 23:08:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:01,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921890867] [2020-10-05 23:08:01,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081342162] [2020-10-05 23:08:01,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:01,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:08:01,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:01,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:01,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:01,203 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:01,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:01,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:01,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421447012] [2020-10-05 23:08:01,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:01,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:01,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:01,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:01,239 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 23:08:01,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:01,565 INFO L93 Difference]: Finished difference Result 176 states and 416 transitions. [2020-10-05 23:08:01,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:08:01,565 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:01,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:01,567 INFO L225 Difference]: With dead ends: 176 [2020-10-05 23:08:01,567 INFO L226 Difference]: Without dead ends: 171 [2020-10-05 23:08:01,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:08:01,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-05 23:08:01,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2020-10-05 23:08:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 23:08:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 23:08:01,571 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 23:08:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:01,571 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 23:08:01,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:01,572 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 23:08:01,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:01,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:01,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:01,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-05 23:08:01,782 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:01,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:01,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2099784077, now seen corresponding path program 34 times [2020-10-05 23:08:01,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:01,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933960588] [2020-10-05 23:08:01,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:01,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933960588] [2020-10-05 23:08:01,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444354750] [2020-10-05 23:08:01,840 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:01,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:01,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:01,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:01,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:01,962 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:01,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:01,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:01,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:01,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690487707] [2020-10-05 23:08:01,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:01,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:01,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:01,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:01,999 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 23:08:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:02,239 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-05 23:08:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:02,240 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:02,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:02,241 INFO L225 Difference]: With dead ends: 166 [2020-10-05 23:08:02,241 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 23:08:02,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 23:08:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121. [2020-10-05 23:08:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 23:08:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 294 transitions. [2020-10-05 23:08:02,245 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 294 transitions. Word has length 12 [2020-10-05 23:08:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:02,245 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 294 transitions. [2020-10-05 23:08:02,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 294 transitions. [2020-10-05 23:08:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:02,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:02,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:02,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:02,453 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:02,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:02,453 INFO L82 PathProgramCache]: Analyzing trace with hash 2099992397, now seen corresponding path program 35 times [2020-10-05 23:08:02,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:02,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545388484] [2020-10-05 23:08:02,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:02,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545388484] [2020-10-05 23:08:02,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952300930] [2020-10-05 23:08:02,515 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:02,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:02,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:02,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:02,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:02,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:02,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:02,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557170556] [2020-10-05 23:08:02,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:02,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:02,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:02,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:02,662 INFO L87 Difference]: Start difference. First operand 121 states and 294 transitions. Second operand 13 states. [2020-10-05 23:08:02,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:02,861 INFO L93 Difference]: Finished difference Result 163 states and 379 transitions. [2020-10-05 23:08:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:02,861 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:02,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:02,863 INFO L225 Difference]: With dead ends: 163 [2020-10-05 23:08:02,863 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 23:08:02,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:08:02,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 23:08:02,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123. [2020-10-05 23:08:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-05 23:08:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 301 transitions. [2020-10-05 23:08:02,867 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 301 transitions. Word has length 12 [2020-10-05 23:08:02,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:02,867 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 301 transitions. [2020-10-05 23:08:02,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:02,867 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 301 transitions. [2020-10-05 23:08:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:02,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:02,868 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:03,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-05 23:08:03,078 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:03,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:03,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2100655487, now seen corresponding path program 36 times [2020-10-05 23:08:03,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:03,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536923971] [2020-10-05 23:08:03,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:03,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536923971] [2020-10-05 23:08:03,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816012155] [2020-10-05 23:08:03,134 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:03,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:03,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:03,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:03,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:03,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:03,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:03,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728532909] [2020-10-05 23:08:03,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:03,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:03,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:03,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:03,272 INFO L87 Difference]: Start difference. First operand 123 states and 301 transitions. Second operand 13 states. [2020-10-05 23:08:03,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:03,537 INFO L93 Difference]: Finished difference Result 170 states and 399 transitions. [2020-10-05 23:08:03,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:08:03,538 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:03,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:03,540 INFO L225 Difference]: With dead ends: 170 [2020-10-05 23:08:03,540 INFO L226 Difference]: Without dead ends: 168 [2020-10-05 23:08:03,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:08:03,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-05 23:08:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125. [2020-10-05 23:08:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-05 23:08:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 308 transitions. [2020-10-05 23:08:03,544 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 308 transitions. Word has length 12 [2020-10-05 23:08:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:03,545 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 308 transitions. [2020-10-05 23:08:03,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 308 transitions. [2020-10-05 23:08:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:03,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:03,546 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:03,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:03,757 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:03,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:03,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2100676846, now seen corresponding path program 37 times [2020-10-05 23:08:03,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:03,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057746445] [2020-10-05 23:08:03,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:03,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057746445] [2020-10-05 23:08:03,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230753917] [2020-10-05 23:08:03,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:03,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:03,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:03,942 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:03,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:03,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:03,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810992451] [2020-10-05 23:08:03,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:03,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:03,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:03,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:03,953 INFO L87 Difference]: Start difference. First operand 125 states and 308 transitions. Second operand 13 states. [2020-10-05 23:08:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:04,260 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2020-10-05 23:08:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:08:04,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:04,262 INFO L225 Difference]: With dead ends: 177 [2020-10-05 23:08:04,262 INFO L226 Difference]: Without dead ends: 172 [2020-10-05 23:08:04,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:08:04,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-05 23:08:04,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2020-10-05 23:08:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-05 23:08:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 313 transitions. [2020-10-05 23:08:04,267 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 313 transitions. Word has length 12 [2020-10-05 23:08:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:04,267 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 313 transitions. [2020-10-05 23:08:04,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 313 transitions. [2020-10-05 23:08:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:04,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:04,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:04,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-05 23:08:04,478 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:04,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:04,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2100677807, now seen corresponding path program 38 times [2020-10-05 23:08:04,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:04,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901868733] [2020-10-05 23:08:04,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:04,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901868733] [2020-10-05 23:08:04,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636720577] [2020-10-05 23:08:04,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:04,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:04,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:04,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:04,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:04,654 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:04,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:04,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:04,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370520450] [2020-10-05 23:08:04,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:04,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:04,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:04,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:04,665 INFO L87 Difference]: Start difference. First operand 126 states and 313 transitions. Second operand 13 states. [2020-10-05 23:08:05,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:05,039 INFO L93 Difference]: Finished difference Result 190 states and 454 transitions. [2020-10-05 23:08:05,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:08:05,039 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:05,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:05,041 INFO L225 Difference]: With dead ends: 190 [2020-10-05 23:08:05,041 INFO L226 Difference]: Without dead ends: 182 [2020-10-05 23:08:05,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-05 23:08:05,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-05 23:08:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 121. [2020-10-05 23:08:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 23:08:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 297 transitions. [2020-10-05 23:08:05,045 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 297 transitions. Word has length 12 [2020-10-05 23:08:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:05,045 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 297 transitions. [2020-10-05 23:08:05,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 297 transitions. [2020-10-05 23:08:05,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:05,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:05,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:05,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-05 23:08:05,247 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:05,248 INFO L82 PathProgramCache]: Analyzing trace with hash 2100706637, now seen corresponding path program 39 times [2020-10-05 23:08:05,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:05,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950789390] [2020-10-05 23:08:05,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:05,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950789390] [2020-10-05 23:08:05,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850048369] [2020-10-05 23:08:05,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:05,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:08:05,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:05,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-05 23:08:05,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:05,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:05,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-10-05 23:08:05,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628672000] [2020-10-05 23:08:05,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-05 23:08:05,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:05,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-05 23:08:05,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:08:05,421 INFO L87 Difference]: Start difference. First operand 121 states and 297 transitions. Second operand 12 states. [2020-10-05 23:08:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:05,780 INFO L93 Difference]: Finished difference Result 177 states and 419 transitions. [2020-10-05 23:08:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:08:05,780 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2020-10-05 23:08:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:05,782 INFO L225 Difference]: With dead ends: 177 [2020-10-05 23:08:05,782 INFO L226 Difference]: Without dead ends: 172 [2020-10-05 23:08:05,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:08:05,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-05 23:08:05,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 120. [2020-10-05 23:08:05,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:08:05,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 292 transitions. [2020-10-05 23:08:05,787 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 292 transitions. Word has length 12 [2020-10-05 23:08:05,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:05,787 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 292 transitions. [2020-10-05 23:08:05,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-05 23:08:05,787 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 292 transitions. [2020-10-05 23:08:05,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:05,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:05,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:05,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-05 23:08:05,990 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:05,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:05,990 INFO L82 PathProgramCache]: Analyzing trace with hash 2107142237, now seen corresponding path program 40 times [2020-10-05 23:08:05,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:05,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777326665] [2020-10-05 23:08:05,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:06,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777326665] [2020-10-05 23:08:06,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976375535] [2020-10-05 23:08:06,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:06,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:06,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:06,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:06,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:06,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:06,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:06,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840494485] [2020-10-05 23:08:06,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:06,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:06,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:06,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:06,195 INFO L87 Difference]: Start difference. First operand 120 states and 292 transitions. Second operand 13 states. [2020-10-05 23:08:06,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:06,335 INFO L93 Difference]: Finished difference Result 164 states and 379 transitions. [2020-10-05 23:08:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:06,336 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:06,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:06,337 INFO L225 Difference]: With dead ends: 164 [2020-10-05 23:08:06,337 INFO L226 Difference]: Without dead ends: 162 [2020-10-05 23:08:06,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:08:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-05 23:08:06,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121. [2020-10-05 23:08:06,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 23:08:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 295 transitions. [2020-10-05 23:08:06,341 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 295 transitions. Word has length 12 [2020-10-05 23:08:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:06,341 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 295 transitions. [2020-10-05 23:08:06,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 295 transitions. [2020-10-05 23:08:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:06,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:06,342 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:06,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-05 23:08:06,543 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:06,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:06,543 INFO L82 PathProgramCache]: Analyzing trace with hash 2107143198, now seen corresponding path program 41 times [2020-10-05 23:08:06,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:06,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553837047] [2020-10-05 23:08:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:06,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553837047] [2020-10-05 23:08:06,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553989571] [2020-10-05 23:08:06,609 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:06,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:06,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:06,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:06,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:06,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:06,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:06,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674594666] [2020-10-05 23:08:06,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:06,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:06,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:06,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:06,748 INFO L87 Difference]: Start difference. First operand 121 states and 295 transitions. Second operand 13 states. [2020-10-05 23:08:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:06,927 INFO L93 Difference]: Finished difference Result 161 states and 372 transitions. [2020-10-05 23:08:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:08:06,928 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:06,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:06,930 INFO L225 Difference]: With dead ends: 161 [2020-10-05 23:08:06,930 INFO L226 Difference]: Without dead ends: 159 [2020-10-05 23:08:06,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:08:06,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-05 23:08:06,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2020-10-05 23:08:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 23:08:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-05 23:08:06,936 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-05 23:08:06,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:06,936 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-05 23:08:06,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:06,937 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-05 23:08:06,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:06,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:06,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:07,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-05 23:08:07,138 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:07,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:07,139 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698027, now seen corresponding path program 42 times [2020-10-05 23:08:07,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:07,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426575680] [2020-10-05 23:08:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:07,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426575680] [2020-10-05 23:08:07,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427910750] [2020-10-05 23:08:07,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:07,241 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:08:07,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:07,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:07,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:07,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:07,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:07,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748612171] [2020-10-05 23:08:07,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:07,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:07,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:07,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:07,359 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 13 states. [2020-10-05 23:08:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:07,561 INFO L93 Difference]: Finished difference Result 165 states and 380 transitions. [2020-10-05 23:08:07,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:08:07,562 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:07,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:07,563 INFO L225 Difference]: With dead ends: 165 [2020-10-05 23:08:07,564 INFO L226 Difference]: Without dead ends: 163 [2020-10-05 23:08:07,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-05 23:08:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2020-10-05 23:08:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 23:08:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 290 transitions. [2020-10-05 23:08:07,567 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 290 transitions. Word has length 12 [2020-10-05 23:08:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:07,567 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 290 transitions. [2020-10-05 23:08:07,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 290 transitions. [2020-10-05 23:08:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:07,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:07,568 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:07,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-05 23:08:07,771 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:07,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:07,771 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698988, now seen corresponding path program 43 times [2020-10-05 23:08:07,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:07,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294038706] [2020-10-05 23:08:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:07,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294038706] [2020-10-05 23:08:07,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065410866] [2020-10-05 23:08:07,828 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:07,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:07,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:07,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:07,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:07,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057657020] [2020-10-05 23:08:07,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:07,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:07,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:07,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:07,972 INFO L87 Difference]: Start difference. First operand 118 states and 290 transitions. Second operand 13 states. [2020-10-05 23:08:08,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:08,177 INFO L93 Difference]: Finished difference Result 167 states and 384 transitions. [2020-10-05 23:08:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:08:08,178 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:08,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:08,179 INFO L225 Difference]: With dead ends: 167 [2020-10-05 23:08:08,179 INFO L226 Difference]: Without dead ends: 165 [2020-10-05 23:08:08,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:08,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-05 23:08:08,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-05 23:08:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 23:08:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-05 23:08:08,184 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-05 23:08:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:08,184 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-05 23:08:08,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-05 23:08:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:08,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:08,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:08,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:08,395 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:08,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2128361117, now seen corresponding path program 44 times [2020-10-05 23:08:08,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:08,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699089357] [2020-10-05 23:08:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:08,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699089357] [2020-10-05 23:08:08,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502096321] [2020-10-05 23:08:08,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:08,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:08,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:08,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:08,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:08,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:08,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:08,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013692821] [2020-10-05 23:08:08,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:08,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:08,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:08,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:08,583 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-05 23:08:08,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:08,843 INFO L93 Difference]: Finished difference Result 168 states and 392 transitions. [2020-10-05 23:08:08,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:08:08,844 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:08,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:08,846 INFO L225 Difference]: With dead ends: 168 [2020-10-05 23:08:08,846 INFO L226 Difference]: Without dead ends: 166 [2020-10-05 23:08:08,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:08:08,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-05 23:08:08,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2020-10-05 23:08:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:08:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-05 23:08:08,850 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-05 23:08:08,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:08,851 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-05 23:08:08,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:08,851 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-05 23:08:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:08,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:08,851 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:09,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:09,061 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:09,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:09,062 INFO L82 PathProgramCache]: Analyzing trace with hash 2128382476, now seen corresponding path program 45 times [2020-10-05 23:08:09,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:09,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325293415] [2020-10-05 23:08:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:09,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325293415] [2020-10-05 23:08:09,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566316353] [2020-10-05 23:08:09,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:09,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:08:09,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:09,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:09,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:09,233 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:09,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:09,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:09,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951525149] [2020-10-05 23:08:09,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:09,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:09,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:09,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:09,244 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-05 23:08:09,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:09,439 INFO L93 Difference]: Finished difference Result 160 states and 384 transitions. [2020-10-05 23:08:09,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:09,440 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:09,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:09,441 INFO L225 Difference]: With dead ends: 160 [2020-10-05 23:08:09,442 INFO L226 Difference]: Without dead ends: 155 [2020-10-05 23:08:09,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:09,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-05 23:08:09,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121. [2020-10-05 23:08:09,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 23:08:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-05 23:08:09,445 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-05 23:08:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:09,445 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-05 23:08:09,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-05 23:08:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:09,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:09,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:09,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:09,646 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:09,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:09,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2128383437, now seen corresponding path program 46 times [2020-10-05 23:08:09,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:09,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524020388] [2020-10-05 23:08:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:09,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524020388] [2020-10-05 23:08:09,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763880158] [2020-10-05 23:08:09,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:09,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:09,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:09,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:09,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:09,833 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:09,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:09,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:09,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801994165] [2020-10-05 23:08:09,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:09,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:09,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:09,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:09,880 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-05 23:08:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:10,231 INFO L93 Difference]: Finished difference Result 189 states and 444 transitions. [2020-10-05 23:08:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:08:10,232 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:10,234 INFO L225 Difference]: With dead ends: 189 [2020-10-05 23:08:10,234 INFO L226 Difference]: Without dead ends: 181 [2020-10-05 23:08:10,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:08:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-05 23:08:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 118. [2020-10-05 23:08:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 23:08:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-05 23:08:10,238 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-05 23:08:10,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:10,239 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-05 23:08:10,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:10,239 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-05 23:08:10,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:10,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:10,239 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:10,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:10,451 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:10,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:10,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2128390908, now seen corresponding path program 47 times [2020-10-05 23:08:10,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:10,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449384371] [2020-10-05 23:08:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:10,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449384371] [2020-10-05 23:08:10,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971795339] [2020-10-05 23:08:10,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:10,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:10,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:10,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:10,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:10,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:10,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:10,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632909455] [2020-10-05 23:08:10,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:10,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:10,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:10,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:10,695 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-05 23:08:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:10,947 INFO L93 Difference]: Finished difference Result 169 states and 393 transitions. [2020-10-05 23:08:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:08:10,948 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:10,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:10,950 INFO L225 Difference]: With dead ends: 169 [2020-10-05 23:08:10,950 INFO L226 Difference]: Without dead ends: 167 [2020-10-05 23:08:10,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:08:10,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-05 23:08:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120. [2020-10-05 23:08:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:08:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-05 23:08:10,954 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-05 23:08:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:10,954 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-05 23:08:10,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-05 23:08:10,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:10,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:10,955 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:11,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-05 23:08:11,164 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:11,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2128412267, now seen corresponding path program 48 times [2020-10-05 23:08:11,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:11,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610861771] [2020-10-05 23:08:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:11,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610861771] [2020-10-05 23:08:11,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784181561] [2020-10-05 23:08:11,223 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:11,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:11,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:11,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:11,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:11,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:11,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:11,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:11,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015202934] [2020-10-05 23:08:11,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:11,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:11,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:11,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:11,341 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-05 23:08:11,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:11,684 INFO L93 Difference]: Finished difference Result 192 states and 454 transitions. [2020-10-05 23:08:11,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:08:11,685 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:11,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:11,686 INFO L225 Difference]: With dead ends: 192 [2020-10-05 23:08:11,686 INFO L226 Difference]: Without dead ends: 184 [2020-10-05 23:08:11,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-05 23:08:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-05 23:08:11,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 119. [2020-10-05 23:08:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-05 23:08:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 287 transitions. [2020-10-05 23:08:11,690 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 287 transitions. Word has length 12 [2020-10-05 23:08:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:11,690 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 287 transitions. [2020-10-05 23:08:11,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 287 transitions. [2020-10-05 23:08:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:11,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:11,691 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:11,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:11,892 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:11,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:11,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2128413228, now seen corresponding path program 49 times [2020-10-05 23:08:11,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:11,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007070695] [2020-10-05 23:08:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:11,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007070695] [2020-10-05 23:08:11,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944789779] [2020-10-05 23:08:11,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:12,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:08:12,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:12,072 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:12,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:12,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 23:08:12,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611042023] [2020-10-05 23:08:12,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:08:12,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:12,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:08:12,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:08:12,083 INFO L87 Difference]: Start difference. First operand 119 states and 287 transitions. Second operand 13 states. [2020-10-05 23:08:12,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:12,418 INFO L93 Difference]: Finished difference Result 180 states and 420 transitions. [2020-10-05 23:08:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:08:12,419 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 23:08:12,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:12,420 INFO L225 Difference]: With dead ends: 180 [2020-10-05 23:08:12,420 INFO L226 Difference]: Without dead ends: 175 [2020-10-05 23:08:12,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:08:12,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-05 23:08:12,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114. [2020-10-05 23:08:12,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-05 23:08:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-05 23:08:12,423 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-05 23:08:12,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:12,423 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-05 23:08:12,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:08:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-05 23:08:12,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:12,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:12,424 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:12,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-05 23:08:12,625 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:12,626 INFO L82 PathProgramCache]: Analyzing trace with hash 609848181, now seen corresponding path program 5 times [2020-10-05 23:08:12,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:12,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944448530] [2020-10-05 23:08:12,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:12,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944448530] [2020-10-05 23:08:12,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059147596] [2020-10-05 23:08:12,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:12,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:08:12,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:12,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:12,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:12,846 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:12,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:12,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 23:08:12,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139627981] [2020-10-05 23:08:12,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 23:08:12,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:12,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 23:08:12,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:08:12,870 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-05 23:08:13,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:13,018 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-05 23:08:13,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:13,018 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-05 23:08:13,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:13,020 INFO L225 Difference]: With dead ends: 164 [2020-10-05 23:08:13,020 INFO L226 Difference]: Without dead ends: 159 [2020-10-05 23:08:13,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:08:13,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-05 23:08:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-05 23:08:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 23:08:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-05 23:08:13,023 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-05 23:08:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:13,024 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-05 23:08:13,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 23:08:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-05 23:08:13,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:13,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:13,025 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:13,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:13,232 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:13,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:13,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1447872776, now seen corresponding path program 15 times [2020-10-05 23:08:13,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:13,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123094912] [2020-10-05 23:08:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:13,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123094912] [2020-10-05 23:08:13,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214249087] [2020-10-05 23:08:13,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:13,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:08:13,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:13,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:13,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:13,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:13,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:13,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446633303] [2020-10-05 23:08:13,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:13,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:13,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:13,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:13,518 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-05 23:08:13,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:13,561 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-05 23:08:13,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:08:13,562 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:13,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:13,563 INFO L225 Difference]: With dead ends: 156 [2020-10-05 23:08:13,563 INFO L226 Difference]: Without dead ends: 153 [2020-10-05 23:08:13,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:13,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-05 23:08:13,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2020-10-05 23:08:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-05 23:08:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-05 23:08:13,567 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-05 23:08:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:13,567 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-05 23:08:13,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-05 23:08:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:13,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:13,567 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:13,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-10-05 23:08:13,768 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:13,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:13,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1985246760, now seen corresponding path program 16 times [2020-10-05 23:08:13,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:13,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072914156] [2020-10-05 23:08:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:13,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072914156] [2020-10-05 23:08:13,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305630754] [2020-10-05 23:08:13,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:13,920 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:13,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:13,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:13,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:14,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:14,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:14,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50488313] [2020-10-05 23:08:14,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:14,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:14,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:14,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:14,038 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-05 23:08:14,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:14,099 INFO L93 Difference]: Finished difference Result 170 states and 394 transitions. [2020-10-05 23:08:14,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:08:14,100 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:14,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:14,101 INFO L225 Difference]: With dead ends: 170 [2020-10-05 23:08:14,101 INFO L226 Difference]: Without dead ends: 167 [2020-10-05 23:08:14,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:08:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-05 23:08:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-05 23:08:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-05 23:08:14,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-05 23:08:14,105 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-05 23:08:14,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:14,105 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-05 23:08:14,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:14,106 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-05 23:08:14,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:14,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:14,106 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:14,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:14,316 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:14,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:14,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1644785416, now seen corresponding path program 17 times [2020-10-05 23:08:14,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:14,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716276599] [2020-10-05 23:08:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:14,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716276599] [2020-10-05 23:08:14,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533737152] [2020-10-05 23:08:14,412 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:14,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:08:14,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:14,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:14,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:14,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:14,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:14,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496499810] [2020-10-05 23:08:14,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:14,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:14,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:14,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:14,564 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-05 23:08:14,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:14,647 INFO L93 Difference]: Finished difference Result 169 states and 394 transitions. [2020-10-05 23:08:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:08:14,648 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:14,649 INFO L225 Difference]: With dead ends: 169 [2020-10-05 23:08:14,649 INFO L226 Difference]: Without dead ends: 166 [2020-10-05 23:08:14,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:08:14,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-05 23:08:14,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130. [2020-10-05 23:08:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-05 23:08:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 320 transitions. [2020-10-05 23:08:14,652 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 320 transitions. Word has length 12 [2020-10-05 23:08:14,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:14,652 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 320 transitions. [2020-10-05 23:08:14,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 320 transitions. [2020-10-05 23:08:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:14,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:14,653 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:14,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:14,854 INFO L427 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:14,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1623335896, now seen corresponding path program 18 times [2020-10-05 23:08:14,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:14,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530988640] [2020-10-05 23:08:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:14,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530988640] [2020-10-05 23:08:14,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381718170] [2020-10-05 23:08:14,937 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:14,976 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:08:14,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:14,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:14,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:15,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:15,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:15,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480378595] [2020-10-05 23:08:15,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:15,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:15,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:15,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:15,096 INFO L87 Difference]: Start difference. First operand 130 states and 320 transitions. Second operand 15 states. [2020-10-05 23:08:15,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:15,208 INFO L93 Difference]: Finished difference Result 168 states and 394 transitions. [2020-10-05 23:08:15,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:08:15,208 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:15,210 INFO L225 Difference]: With dead ends: 168 [2020-10-05 23:08:15,210 INFO L226 Difference]: Without dead ends: 165 [2020-10-05 23:08:15,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:08:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-05 23:08:15,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-10-05 23:08:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-05 23:08:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 327 transitions. [2020-10-05 23:08:15,214 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 327 transitions. Word has length 12 [2020-10-05 23:08:15,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:15,214 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 327 transitions. [2020-10-05 23:08:15,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:15,214 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 327 transitions. [2020-10-05 23:08:15,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:15,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:15,215 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:15,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-05 23:08:15,424 INFO L427 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:15,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:15,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1622643976, now seen corresponding path program 19 times [2020-10-05 23:08:15,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:15,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031520062] [2020-10-05 23:08:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:15,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031520062] [2020-10-05 23:08:15,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027798253] [2020-10-05 23:08:15,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:15,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:15,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:15,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:15,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:15,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211650927] [2020-10-05 23:08:15,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:15,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:15,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:15,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:15,670 INFO L87 Difference]: Start difference. First operand 132 states and 327 transitions. Second operand 15 states. [2020-10-05 23:08:15,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:15,800 INFO L93 Difference]: Finished difference Result 167 states and 394 transitions. [2020-10-05 23:08:15,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:15,800 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:15,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:15,802 INFO L225 Difference]: With dead ends: 167 [2020-10-05 23:08:15,802 INFO L226 Difference]: Without dead ends: 164 [2020-10-05 23:08:15,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:08:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-05 23:08:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-10-05 23:08:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-05 23:08:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-05 23:08:15,805 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 12 [2020-10-05 23:08:15,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:15,805 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-05 23:08:15,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-05 23:08:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:08:15,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:15,806 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:16,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:16,007 INFO L427 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:16,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1622621656, now seen corresponding path program 20 times [2020-10-05 23:08:16,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:16,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155086089] [2020-10-05 23:08:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:16,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155086089] [2020-10-05 23:08:16,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60458316] [2020-10-05 23:08:16,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:16,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:16,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:16,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:16,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:16,234 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:16,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:16,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:16,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568416446] [2020-10-05 23:08:16,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:16,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:16,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:16,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:16,248 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 15 states. [2020-10-05 23:08:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:16,427 INFO L93 Difference]: Finished difference Result 176 states and 418 transitions. [2020-10-05 23:08:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:16,428 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 23:08:16,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:16,430 INFO L225 Difference]: With dead ends: 176 [2020-10-05 23:08:16,430 INFO L226 Difference]: Without dead ends: 170 [2020-10-05 23:08:16,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:16,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-05 23:08:16,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 132. [2020-10-05 23:08:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-05 23:08:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-05 23:08:16,433 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-05 23:08:16,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:16,433 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-05 23:08:16,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:16,433 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-05 23:08:16,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:16,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:16,434 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:16,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:16,636 INFO L427 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:16,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:16,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1730118241, now seen corresponding path program 50 times [2020-10-05 23:08:16,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:16,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947102670] [2020-10-05 23:08:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:16,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947102670] [2020-10-05 23:08:16,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750978618] [2020-10-05 23:08:16,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:16,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:16,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:16,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:16,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:16,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:16,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:16,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417390210] [2020-10-05 23:08:16,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:16,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:16,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:16,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:16,888 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-05 23:08:16,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:16,951 INFO L93 Difference]: Finished difference Result 163 states and 394 transitions. [2020-10-05 23:08:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:08:16,952 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:16,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:16,954 INFO L225 Difference]: With dead ends: 163 [2020-10-05 23:08:16,954 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 23:08:16,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:16,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 23:08:16,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138. [2020-10-05 23:08:16,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-05 23:08:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2020-10-05 23:08:16,959 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13 [2020-10-05 23:08:16,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:16,959 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2020-10-05 23:08:16,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2020-10-05 23:08:16,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:16,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:16,960 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:17,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-10-05 23:08:17,170 INFO L427 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:17,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1730119202, now seen corresponding path program 51 times [2020-10-05 23:08:17,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:17,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526206544] [2020-10-05 23:08:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:17,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526206544] [2020-10-05 23:08:17,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874510533] [2020-10-05 23:08:17,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:17,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:08:17,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:17,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:17,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:17,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:17,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:17,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699335465] [2020-10-05 23:08:17,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:17,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:17,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:17,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:17,520 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 15 states. [2020-10-05 23:08:17,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:17,716 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-05 23:08:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:08:17,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:17,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:17,717 INFO L225 Difference]: With dead ends: 172 [2020-10-05 23:08:17,717 INFO L226 Difference]: Without dead ends: 170 [2020-10-05 23:08:17,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:08:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-05 23:08:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-05 23:08:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 23:08:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-05 23:08:17,721 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-05 23:08:17,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:17,721 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-05 23:08:17,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-05 23:08:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:17,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:17,722 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:17,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:17,932 INFO L427 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:17,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:17,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1730148032, now seen corresponding path program 52 times [2020-10-05 23:08:17,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:17,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034691719] [2020-10-05 23:08:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:18,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034691719] [2020-10-05 23:08:18,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63471002] [2020-10-05 23:08:18,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:18,071 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:18,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:18,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:18,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:18,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:18,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:18,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391290305] [2020-10-05 23:08:18,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:18,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:18,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:18,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:18,850 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-05 23:08:19,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:19,060 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-05 23:08:19,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:08:19,060 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:19,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:19,062 INFO L225 Difference]: With dead ends: 179 [2020-10-05 23:08:19,062 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 23:08:19,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:19,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 23:08:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2020-10-05 23:08:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-05 23:08:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 338 transitions. [2020-10-05 23:08:19,066 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 338 transitions. Word has length 13 [2020-10-05 23:08:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:19,066 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 338 transitions. [2020-10-05 23:08:19,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 338 transitions. [2020-10-05 23:08:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:19,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:19,067 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:19,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-10-05 23:08:19,278 INFO L427 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:19,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:19,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041762, now seen corresponding path program 53 times [2020-10-05 23:08:19,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:19,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856965976] [2020-10-05 23:08:19,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:19,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856965976] [2020-10-05 23:08:19,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234955133] [2020-10-05 23:08:19,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:19,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:19,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:19,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:19,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:19,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:19,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:19,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538164654] [2020-10-05 23:08:19,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:19,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:19,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:19,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:19,525 INFO L87 Difference]: Start difference. First operand 134 states and 338 transitions. Second operand 15 states. [2020-10-05 23:08:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:19,722 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-05 23:08:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:08:19,722 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:19,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:19,724 INFO L225 Difference]: With dead ends: 179 [2020-10-05 23:08:19,724 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 23:08:19,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 23:08:19,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-05 23:08:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 23:08:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-05 23:08:19,727 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-05 23:08:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:19,727 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-05 23:08:19,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-05 23:08:19,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:19,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:19,728 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:19,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-05 23:08:19,939 INFO L427 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:19,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1731042723, now seen corresponding path program 54 times [2020-10-05 23:08:19,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:19,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533408378] [2020-10-05 23:08:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:20,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533408378] [2020-10-05 23:08:20,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698029225] [2020-10-05 23:08:20,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:20,073 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:20,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:20,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:20,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:20,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:20,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:20,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231403775] [2020-10-05 23:08:20,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:20,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:20,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:20,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:20,206 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-05 23:08:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:20,415 INFO L93 Difference]: Finished difference Result 184 states and 436 transitions. [2020-10-05 23:08:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:20,415 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:20,417 INFO L225 Difference]: With dead ends: 184 [2020-10-05 23:08:20,417 INFO L226 Difference]: Without dead ends: 182 [2020-10-05 23:08:20,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-05 23:08:20,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2020-10-05 23:08:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 23:08:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-05 23:08:20,421 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-05 23:08:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:20,422 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-05 23:08:20,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-05 23:08:20,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:20,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:20,423 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:20,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-05 23:08:20,625 INFO L427 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:20,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:20,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1731071553, now seen corresponding path program 55 times [2020-10-05 23:08:20,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:20,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524284464] [2020-10-05 23:08:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:20,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524284464] [2020-10-05 23:08:20,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666415540] [2020-10-05 23:08:20,716 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:20,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:20,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:20,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:20,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:20,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814237926] [2020-10-05 23:08:20,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:20,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:20,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:20,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:20,872 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 15 states. [2020-10-05 23:08:21,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:21,082 INFO L93 Difference]: Finished difference Result 179 states and 427 transitions. [2020-10-05 23:08:21,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:21,083 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:21,085 INFO L225 Difference]: With dead ends: 179 [2020-10-05 23:08:21,085 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 23:08:21,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:21,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 23:08:21,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2020-10-05 23:08:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-05 23:08:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-05 23:08:21,087 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-05 23:08:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:21,087 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-05 23:08:21,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-05 23:08:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:21,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:21,088 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:21,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:21,289 INFO L427 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:21,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:21,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1758747392, now seen corresponding path program 56 times [2020-10-05 23:08:21,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:21,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410075873] [2020-10-05 23:08:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:21,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410075873] [2020-10-05 23:08:21,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378014673] [2020-10-05 23:08:21,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:21,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:21,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:21,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:21,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:21,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:21,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:21,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546320147] [2020-10-05 23:08:21,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:21,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:21,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:21,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:21,540 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-05 23:08:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:21,699 INFO L93 Difference]: Finished difference Result 176 states and 421 transitions. [2020-10-05 23:08:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:08:21,700 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:21,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:21,702 INFO L225 Difference]: With dead ends: 176 [2020-10-05 23:08:21,702 INFO L226 Difference]: Without dead ends: 174 [2020-10-05 23:08:21,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-05 23:08:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-10-05 23:08:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:08:21,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 350 transitions. [2020-10-05 23:08:21,705 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 350 transitions. Word has length 13 [2020-10-05 23:08:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:21,705 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 350 transitions. [2020-10-05 23:08:21,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 350 transitions. [2020-10-05 23:08:21,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:21,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:21,706 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:21,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:21,907 INFO L427 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:21,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1758748353, now seen corresponding path program 57 times [2020-10-05 23:08:21,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:21,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183715785] [2020-10-05 23:08:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:21,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183715785] [2020-10-05 23:08:21,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480125957] [2020-10-05 23:08:21,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:22,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:08:22,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:22,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:22,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:22,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:22,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:22,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770832877] [2020-10-05 23:08:22,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:22,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:22,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:22,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:22,150 INFO L87 Difference]: Start difference. First operand 139 states and 350 transitions. Second operand 15 states. [2020-10-05 23:08:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:22,400 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-05 23:08:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:22,401 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:22,403 INFO L225 Difference]: With dead ends: 185 [2020-10-05 23:08:22,403 INFO L226 Difference]: Without dead ends: 183 [2020-10-05 23:08:22,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:22,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-05 23:08:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-05 23:08:22,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:08:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions. [2020-10-05 23:08:22,408 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13 [2020-10-05 23:08:22,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:22,409 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 352 transitions. [2020-10-05 23:08:22,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions. [2020-10-05 23:08:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:22,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:22,410 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:22,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:22,623 INFO L427 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:22,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:22,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1758777183, now seen corresponding path program 58 times [2020-10-05 23:08:22,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:22,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610584124] [2020-10-05 23:08:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:22,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610584124] [2020-10-05 23:08:22,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310875421] [2020-10-05 23:08:22,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:22,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:22,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:22,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:22,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:22,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:22,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:22,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:22,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465563373] [2020-10-05 23:08:22,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:22,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:22,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:22,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:22,865 INFO L87 Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 15 states. [2020-10-05 23:08:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:23,105 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-05 23:08:23,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:23,106 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:23,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:23,108 INFO L225 Difference]: With dead ends: 185 [2020-10-05 23:08:23,108 INFO L226 Difference]: Without dead ends: 183 [2020-10-05 23:08:23,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:23,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-05 23:08:23,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2020-10-05 23:08:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-05 23:08:23,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 345 transitions. [2020-10-05 23:08:23,113 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 345 transitions. Word has length 13 [2020-10-05 23:08:23,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:23,114 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 345 transitions. [2020-10-05 23:08:23,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 345 transitions. [2020-10-05 23:08:23,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:23,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:23,115 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:23,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:23,316 INFO L427 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:23,317 INFO L82 PathProgramCache]: Analyzing trace with hash 9395951, now seen corresponding path program 59 times [2020-10-05 23:08:23,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:23,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420580405] [2020-10-05 23:08:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:23,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420580405] [2020-10-05 23:08:23,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548873706] [2020-10-05 23:08:23,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:23,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:08:23,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:23,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:23,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:23,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:23,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:23,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:23,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523121920] [2020-10-05 23:08:23,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:23,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:23,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:23,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:23,640 INFO L87 Difference]: Start difference. First operand 138 states and 345 transitions. Second operand 15 states. [2020-10-05 23:08:23,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:23,697 INFO L93 Difference]: Finished difference Result 182 states and 432 transitions. [2020-10-05 23:08:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:08:23,697 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:23,699 INFO L225 Difference]: With dead ends: 182 [2020-10-05 23:08:23,699 INFO L226 Difference]: Without dead ends: 180 [2020-10-05 23:08:23,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:08:23,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-05 23:08:23,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144. [2020-10-05 23:08:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 23:08:23,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions. [2020-10-05 23:08:23,703 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 13 [2020-10-05 23:08:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:23,704 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 363 transitions. [2020-10-05 23:08:23,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:23,704 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions. [2020-10-05 23:08:23,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:23,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:23,705 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:23,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2020-10-05 23:08:23,917 INFO L427 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:23,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:23,917 INFO L82 PathProgramCache]: Analyzing trace with hash 9396912, now seen corresponding path program 60 times [2020-10-05 23:08:23,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:23,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450452143] [2020-10-05 23:08:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:24,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450452143] [2020-10-05 23:08:24,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635359920] [2020-10-05 23:08:24,023 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:24,060 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:24,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:24,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:24,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:24,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:24,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:24,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762572873] [2020-10-05 23:08:24,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:24,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:24,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:24,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:24,178 INFO L87 Difference]: Start difference. First operand 144 states and 363 transitions. Second operand 15 states. [2020-10-05 23:08:24,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:24,354 INFO L93 Difference]: Finished difference Result 185 states and 437 transitions. [2020-10-05 23:08:24,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:08:24,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:24,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:24,356 INFO L225 Difference]: With dead ends: 185 [2020-10-05 23:08:24,356 INFO L226 Difference]: Without dead ends: 183 [2020-10-05 23:08:24,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:08:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-05 23:08:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2020-10-05 23:08:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:08:24,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-05 23:08:24,360 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-05 23:08:24,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:24,360 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-05 23:08:24,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-05 23:08:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:24,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:24,361 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:24,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:24,562 INFO L427 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:24,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:24,562 INFO L82 PathProgramCache]: Analyzing trace with hash 9425742, now seen corresponding path program 61 times [2020-10-05 23:08:24,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:24,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267473117] [2020-10-05 23:08:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:24,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267473117] [2020-10-05 23:08:24,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541710821] [2020-10-05 23:08:24,648 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:24,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:24,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:24,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:24,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:24,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75951450] [2020-10-05 23:08:24,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:24,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:24,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:24,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:24,849 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:25,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:25,071 INFO L93 Difference]: Finished difference Result 191 states and 449 transitions. [2020-10-05 23:08:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:08:25,071 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:25,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:25,073 INFO L225 Difference]: With dead ends: 191 [2020-10-05 23:08:25,073 INFO L226 Difference]: Without dead ends: 189 [2020-10-05 23:08:25,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:25,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-05 23:08:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140. [2020-10-05 23:08:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:08:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 351 transitions. [2020-10-05 23:08:25,077 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 351 transitions. Word has length 13 [2020-10-05 23:08:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:25,077 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 351 transitions. [2020-10-05 23:08:25,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 351 transitions. [2020-10-05 23:08:25,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:25,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:25,078 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:25,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:25,287 INFO L427 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:25,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:25,288 INFO L82 PathProgramCache]: Analyzing trace with hash 10319472, now seen corresponding path program 62 times [2020-10-05 23:08:25,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:25,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471606307] [2020-10-05 23:08:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:25,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471606307] [2020-10-05 23:08:25,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300853334] [2020-10-05 23:08:25,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:25,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:25,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:25,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:25,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:25,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:25,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:25,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648969629] [2020-10-05 23:08:25,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:25,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:25,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:25,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:25,534 INFO L87 Difference]: Start difference. First operand 140 states and 351 transitions. Second operand 15 states. [2020-10-05 23:08:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:25,764 INFO L93 Difference]: Finished difference Result 187 states and 441 transitions. [2020-10-05 23:08:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:25,765 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:25,767 INFO L225 Difference]: With dead ends: 187 [2020-10-05 23:08:25,767 INFO L226 Difference]: Without dead ends: 185 [2020-10-05 23:08:25,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:08:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-05 23:08:25,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2020-10-05 23:08:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:08:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-05 23:08:25,771 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-05 23:08:25,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:25,771 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-05 23:08:25,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-05 23:08:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:25,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:25,772 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:25,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-05 23:08:25,973 INFO L427 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:25,973 INFO L82 PathProgramCache]: Analyzing trace with hash 10320433, now seen corresponding path program 63 times [2020-10-05 23:08:25,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:25,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991932386] [2020-10-05 23:08:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:26,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991932386] [2020-10-05 23:08:26,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279334670] [2020-10-05 23:08:26,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:26,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:08:26,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:26,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:26,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:26,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:26,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:26,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703076563] [2020-10-05 23:08:26,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:26,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:26,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:26,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:26,204 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:26,454 INFO L93 Difference]: Finished difference Result 198 states and 463 transitions. [2020-10-05 23:08:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:08:26,455 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:26,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:26,457 INFO L225 Difference]: With dead ends: 198 [2020-10-05 23:08:26,457 INFO L226 Difference]: Without dead ends: 196 [2020-10-05 23:08:26,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:08:26,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-05 23:08:26,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2020-10-05 23:08:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:08:26,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 356 transitions. [2020-10-05 23:08:26,459 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 356 transitions. Word has length 13 [2020-10-05 23:08:26,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:26,460 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 356 transitions. [2020-10-05 23:08:26,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 356 transitions. [2020-10-05 23:08:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:26,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:26,460 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:26,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:26,661 INFO L427 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:26,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:26,662 INFO L82 PathProgramCache]: Analyzing trace with hash 10349263, now seen corresponding path program 64 times [2020-10-05 23:08:26,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:26,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279367997] [2020-10-05 23:08:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:26,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279367997] [2020-10-05 23:08:26,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360007975] [2020-10-05 23:08:26,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:26,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:26,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:26,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:26,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:26,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:26,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:26,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475781500] [2020-10-05 23:08:26,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:26,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:26,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:26,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:26,896 INFO L87 Difference]: Start difference. First operand 142 states and 356 transitions. Second operand 15 states. [2020-10-05 23:08:27,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:27,156 INFO L93 Difference]: Finished difference Result 189 states and 446 transitions. [2020-10-05 23:08:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:08:27,157 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:27,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:27,158 INFO L225 Difference]: With dead ends: 189 [2020-10-05 23:08:27,159 INFO L226 Difference]: Without dead ends: 187 [2020-10-05 23:08:27,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:08:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-05 23:08:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2020-10-05 23:08:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:08:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-05 23:08:27,162 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-05 23:08:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:27,162 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-05 23:08:27,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-05 23:08:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:27,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:27,163 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:27,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-05 23:08:27,367 INFO L427 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:27,367 INFO L82 PathProgramCache]: Analyzing trace with hash 646625441, now seen corresponding path program 65 times [2020-10-05 23:08:27,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:27,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396898404] [2020-10-05 23:08:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:27,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396898404] [2020-10-05 23:08:27,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278390157] [2020-10-05 23:08:27,475 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:27,512 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:08:27,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:27,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:27,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:27,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:27,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:27,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709600025] [2020-10-05 23:08:27,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:27,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:27,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:27,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:27,634 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 15 states. [2020-10-05 23:08:27,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:27,722 INFO L93 Difference]: Finished difference Result 178 states and 423 transitions. [2020-10-05 23:08:27,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:08:27,723 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:27,725 INFO L225 Difference]: With dead ends: 178 [2020-10-05 23:08:27,725 INFO L226 Difference]: Without dead ends: 176 [2020-10-05 23:08:27,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:08:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-05 23:08:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2020-10-05 23:08:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:08:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 359 transitions. [2020-10-05 23:08:27,728 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 359 transitions. Word has length 13 [2020-10-05 23:08:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:27,728 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 359 transitions. [2020-10-05 23:08:27,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 359 transitions. [2020-10-05 23:08:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:27,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:27,729 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:27,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:27,933 INFO L427 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:27,933 INFO L82 PathProgramCache]: Analyzing trace with hash 646626402, now seen corresponding path program 66 times [2020-10-05 23:08:27,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:27,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341767570] [2020-10-05 23:08:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:28,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341767570] [2020-10-05 23:08:28,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541415529] [2020-10-05 23:08:28,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:28,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:28,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:28,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:28,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:28,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:28,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:28,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906031157] [2020-10-05 23:08:28,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:28,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:28,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:28,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:28,192 INFO L87 Difference]: Start difference. First operand 143 states and 359 transitions. Second operand 15 states. [2020-10-05 23:08:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:28,382 INFO L93 Difference]: Finished difference Result 193 states and 452 transitions. [2020-10-05 23:08:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:28,382 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:28,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:28,384 INFO L225 Difference]: With dead ends: 193 [2020-10-05 23:08:28,384 INFO L226 Difference]: Without dead ends: 191 [2020-10-05 23:08:28,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:08:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-05 23:08:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2020-10-05 23:08:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:08:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-05 23:08:28,387 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-05 23:08:28,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:28,387 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-05 23:08:28,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:28,387 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-05 23:08:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:28,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:28,388 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:28,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2020-10-05 23:08:28,589 INFO L427 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:28,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:28,589 INFO L82 PathProgramCache]: Analyzing trace with hash 646655232, now seen corresponding path program 67 times [2020-10-05 23:08:28,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:28,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40859010] [2020-10-05 23:08:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:28,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40859010] [2020-10-05 23:08:28,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988931881] [2020-10-05 23:08:28,669 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:28,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:28,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:28,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:28,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:28,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899132314] [2020-10-05 23:08:28,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:28,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:28,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:28,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:28,871 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 15 states. [2020-10-05 23:08:29,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:29,124 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-05 23:08:29,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:29,124 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:29,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:29,126 INFO L225 Difference]: With dead ends: 195 [2020-10-05 23:08:29,126 INFO L226 Difference]: Without dead ends: 193 [2020-10-05 23:08:29,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:08:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-05 23:08:29,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 140. [2020-10-05 23:08:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:08:29,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 349 transitions. [2020-10-05 23:08:29,129 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 349 transitions. Word has length 13 [2020-10-05 23:08:29,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:29,129 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 349 transitions. [2020-10-05 23:08:29,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 349 transitions. [2020-10-05 23:08:29,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:29,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:29,130 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:29,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:29,335 INFO L427 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:29,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:29,335 INFO L82 PathProgramCache]: Analyzing trace with hash 667181231, now seen corresponding path program 68 times [2020-10-05 23:08:29,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:29,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881035385] [2020-10-05 23:08:29,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:29,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881035385] [2020-10-05 23:08:29,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922632684] [2020-10-05 23:08:29,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:29,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:29,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:29,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:29,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:29,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:29,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:29,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346681544] [2020-10-05 23:08:29,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:29,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:29,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:29,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:29,582 INFO L87 Difference]: Start difference. First operand 140 states and 349 transitions. Second operand 15 states. [2020-10-05 23:08:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:29,694 INFO L93 Difference]: Finished difference Result 174 states and 414 transitions. [2020-10-05 23:08:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:08:29,694 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:29,696 INFO L225 Difference]: With dead ends: 174 [2020-10-05 23:08:29,696 INFO L226 Difference]: Without dead ends: 172 [2020-10-05 23:08:29,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:08:29,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-05 23:08:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-10-05 23:08:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:08:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 355 transitions. [2020-10-05 23:08:29,699 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 355 transitions. Word has length 13 [2020-10-05 23:08:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:29,699 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 355 transitions. [2020-10-05 23:08:29,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions. [2020-10-05 23:08:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:29,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:29,700 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:29,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-05 23:08:29,901 INFO L427 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:29,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:29,901 INFO L82 PathProgramCache]: Analyzing trace with hash 667182192, now seen corresponding path program 69 times [2020-10-05 23:08:29,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:29,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651647671] [2020-10-05 23:08:29,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:29,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651647671] [2020-10-05 23:08:29,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803670192] [2020-10-05 23:08:29,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:30,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:08:30,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:30,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:30,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:30,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:30,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:30,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131524316] [2020-10-05 23:08:30,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:30,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:30,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:30,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:30,142 INFO L87 Difference]: Start difference. First operand 142 states and 355 transitions. Second operand 15 states. [2020-10-05 23:08:30,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:30,366 INFO L93 Difference]: Finished difference Result 189 states and 443 transitions. [2020-10-05 23:08:30,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:08:30,366 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:30,368 INFO L225 Difference]: With dead ends: 189 [2020-10-05 23:08:30,368 INFO L226 Difference]: Without dead ends: 187 [2020-10-05 23:08:30,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:08:30,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-05 23:08:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141. [2020-10-05 23:08:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:08:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 351 transitions. [2020-10-05 23:08:30,372 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 351 transitions. Word has length 13 [2020-10-05 23:08:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:30,372 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 351 transitions. [2020-10-05 23:08:30,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 351 transitions. [2020-10-05 23:08:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:30,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:30,373 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:30,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:30,574 INFO L427 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:30,574 INFO L82 PathProgramCache]: Analyzing trace with hash 667844321, now seen corresponding path program 70 times [2020-10-05 23:08:30,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:30,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848330158] [2020-10-05 23:08:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:30,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848330158] [2020-10-05 23:08:30,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135994457] [2020-10-05 23:08:30,653 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:30,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:30,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:30,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:30,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:30,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:30,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:30,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638572705] [2020-10-05 23:08:30,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:30,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:30,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:30,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:30,822 INFO L87 Difference]: Start difference. First operand 141 states and 351 transitions. Second operand 15 states. [2020-10-05 23:08:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:30,967 INFO L93 Difference]: Finished difference Result 175 states and 413 transitions. [2020-10-05 23:08:30,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:08:30,968 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:30,970 INFO L225 Difference]: With dead ends: 175 [2020-10-05 23:08:30,970 INFO L226 Difference]: Without dead ends: 173 [2020-10-05 23:08:30,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:08:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-05 23:08:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2020-10-05 23:08:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:08:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 23:08:30,973 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 23:08:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:30,974 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 23:08:30,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:30,974 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 23:08:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:30,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:30,975 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:31,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:31,177 INFO L427 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:31,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:31,177 INFO L82 PathProgramCache]: Analyzing trace with hash 667866641, now seen corresponding path program 71 times [2020-10-05 23:08:31,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:31,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835962663] [2020-10-05 23:08:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:31,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835962663] [2020-10-05 23:08:31,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086865243] [2020-10-05 23:08:31,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:31,287 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:08:31,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:31,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:31,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:31,389 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:31,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:31,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:31,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777509600] [2020-10-05 23:08:31,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:31,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:31,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:31,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:31,424 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:31,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:31,750 INFO L93 Difference]: Finished difference Result 195 states and 464 transitions. [2020-10-05 23:08:31,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:31,751 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:31,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:31,752 INFO L225 Difference]: With dead ends: 195 [2020-10-05 23:08:31,752 INFO L226 Difference]: Without dead ends: 190 [2020-10-05 23:08:31,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:08:31,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-05 23:08:31,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 143. [2020-10-05 23:08:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:08:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-05 23:08:31,756 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-05 23:08:31,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:31,756 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-05 23:08:31,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:31,756 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-05 23:08:31,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:31,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:31,756 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:31,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:31,958 INFO L427 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:31,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:31,959 INFO L82 PathProgramCache]: Analyzing trace with hash 667874112, now seen corresponding path program 72 times [2020-10-05 23:08:31,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:31,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810264646] [2020-10-05 23:08:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:32,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810264646] [2020-10-05 23:08:32,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949868465] [2020-10-05 23:08:32,033 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:32,069 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:32,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:32,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:32,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:32,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:32,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:32,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084515121] [2020-10-05 23:08:32,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:32,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:32,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:32,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:32,200 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-05 23:08:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:32,445 INFO L93 Difference]: Finished difference Result 187 states and 442 transitions. [2020-10-05 23:08:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:08:32,445 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:32,447 INFO L225 Difference]: With dead ends: 187 [2020-10-05 23:08:32,447 INFO L226 Difference]: Without dead ends: 185 [2020-10-05 23:08:32,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:08:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-05 23:08:32,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2020-10-05 23:08:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:08:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 23:08:32,451 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 23:08:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:32,451 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 23:08:32,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 23:08:32,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:32,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:32,451 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:32,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:32,652 INFO L427 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:32,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:32,653 INFO L82 PathProgramCache]: Analyzing trace with hash 667895471, now seen corresponding path program 73 times [2020-10-05 23:08:32,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:32,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807978211] [2020-10-05 23:08:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:32,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807978211] [2020-10-05 23:08:32,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519359746] [2020-10-05 23:08:32,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:32,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:32,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:32,868 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:32,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:32,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:32,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329217315] [2020-10-05 23:08:32,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:32,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:32,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:32,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:32,897 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:33,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:33,331 INFO L93 Difference]: Finished difference Result 212 states and 503 transitions. [2020-10-05 23:08:33,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:08:33,332 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:33,333 INFO L225 Difference]: With dead ends: 212 [2020-10-05 23:08:33,333 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 23:08:33,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-05 23:08:33,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 23:08:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-05 23:08:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:08:33,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 23:08:33,336 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 23:08:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:33,336 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 23:08:33,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 23:08:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:33,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:33,337 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:33,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-05 23:08:33,539 INFO L427 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:33,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:33,539 INFO L82 PathProgramCache]: Analyzing trace with hash 667896432, now seen corresponding path program 74 times [2020-10-05 23:08:33,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:33,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063413654] [2020-10-05 23:08:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:33,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063413654] [2020-10-05 23:08:33,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632679544] [2020-10-05 23:08:33,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:33,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:08:33,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:33,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:33,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:33,765 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:33,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:33,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:33,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123026197] [2020-10-05 23:08:33,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:33,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:33,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:33,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:33,788 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:34,112 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-05 23:08:34,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:34,113 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:34,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:34,115 INFO L225 Difference]: With dead ends: 202 [2020-10-05 23:08:34,115 INFO L226 Difference]: Without dead ends: 197 [2020-10-05 23:08:34,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:08:34,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-05 23:08:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 141. [2020-10-05 23:08:34,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:08:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions. [2020-10-05 23:08:34,119 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 13 [2020-10-05 23:08:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:34,119 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 343 transitions. [2020-10-05 23:08:34,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions. [2020-10-05 23:08:34,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:34,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:34,120 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:34,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:34,327 INFO L427 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:34,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:34,327 INFO L82 PathProgramCache]: Analyzing trace with hash 668104752, now seen corresponding path program 75 times [2020-10-05 23:08:34,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:34,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092117984] [2020-10-05 23:08:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:34,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092117984] [2020-10-05 23:08:34,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872284659] [2020-10-05 23:08:34,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:34,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:08:34,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:34,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:34,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:35,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:35,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:35,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043676932] [2020-10-05 23:08:35,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:35,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:35,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:35,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:35,076 INFO L87 Difference]: Start difference. First operand 141 states and 343 transitions. Second operand 15 states. [2020-10-05 23:08:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:35,363 INFO L93 Difference]: Finished difference Result 198 states and 460 transitions. [2020-10-05 23:08:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:08:35,364 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:35,365 INFO L225 Difference]: With dead ends: 198 [2020-10-05 23:08:35,365 INFO L226 Difference]: Without dead ends: 196 [2020-10-05 23:08:35,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:08:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-05 23:08:35,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143. [2020-10-05 23:08:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:08:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-05 23:08:35,376 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-05 23:08:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:35,376 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-05 23:08:35,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:35,376 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-05 23:08:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:35,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:35,377 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:35,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-05 23:08:35,589 INFO L427 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:35,589 INFO L82 PathProgramCache]: Analyzing trace with hash 668767842, now seen corresponding path program 76 times [2020-10-05 23:08:35,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:35,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674246226] [2020-10-05 23:08:35,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:35,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674246226] [2020-10-05 23:08:35,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208688998] [2020-10-05 23:08:35,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:35,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:08:35,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:35,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:35,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:35,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:35,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:35,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956362398] [2020-10-05 23:08:35,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:35,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:35,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:35,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:35,880 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-05 23:08:36,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:36,285 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-05 23:08:36,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 23:08:36,286 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:36,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:36,287 INFO L225 Difference]: With dead ends: 209 [2020-10-05 23:08:36,288 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 23:08:36,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:08:36,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 23:08:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-05 23:08:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:08:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 23:08:36,292 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 23:08:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:36,292 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 23:08:36,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 23:08:36,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:36,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:36,292 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:36,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-05 23:08:36,493 INFO L427 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:36,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:36,494 INFO L82 PathProgramCache]: Analyzing trace with hash 668789201, now seen corresponding path program 77 times [2020-10-05 23:08:36,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:36,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142325990] [2020-10-05 23:08:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:36,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142325990] [2020-10-05 23:08:36,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932543087] [2020-10-05 23:08:36,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:36,607 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:08:36,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:36,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:36,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:36,730 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:36,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:36,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:36,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43408374] [2020-10-05 23:08:36,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:36,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:36,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:36,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:08:36,773 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 23:08:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:37,330 INFO L93 Difference]: Finished difference Result 217 states and 518 transitions. [2020-10-05 23:08:37,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:08:37,331 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:37,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:37,332 INFO L225 Difference]: With dead ends: 217 [2020-10-05 23:08:37,332 INFO L226 Difference]: Without dead ends: 212 [2020-10-05 23:08:37,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870 [2020-10-05 23:08:37,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-05 23:08:37,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 146. [2020-10-05 23:08:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-05 23:08:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-05 23:08:37,338 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 13 [2020-10-05 23:08:37,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:37,338 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-05 23:08:37,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:37,338 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-05 23:08:37,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:37,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:37,339 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:37,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-05 23:08:37,547 INFO L427 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:37,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:37,547 INFO L82 PathProgramCache]: Analyzing trace with hash 668790162, now seen corresponding path program 78 times [2020-10-05 23:08:37,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:37,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256302248] [2020-10-05 23:08:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:37,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256302248] [2020-10-05 23:08:37,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372770478] [2020-10-05 23:08:37,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:37,667 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:08:37,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:08:37,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:37,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:39,848 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:39,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:39,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:08:39,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218328729] [2020-10-05 23:08:39,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:08:39,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:39,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:08:39,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=142, Unknown=1, NotChecked=0, Total=210 [2020-10-05 23:08:39,896 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 15 states. [2020-10-05 23:08:44,219 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-05 23:08:48,425 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-05 23:08:48,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:08:48,912 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-05 23:08:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 23:08:48,912 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:08:48,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:08:48,914 INFO L225 Difference]: With dead ends: 236 [2020-10-05 23:08:48,914 INFO L226 Difference]: Without dead ends: 228 [2020-10-05 23:08:48,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=293, Invalid=636, Unknown=1, NotChecked=0, Total=930 [2020-10-05 23:08:48,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-05 23:08:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2020-10-05 23:08:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:08:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions. [2020-10-05 23:08:48,919 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 13 [2020-10-05 23:08:48,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:08:48,919 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 346 transitions. [2020-10-05 23:08:48,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:08:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions. [2020-10-05 23:08:48,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:08:48,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:08:48,920 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:08:49,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-05 23:08:49,121 INFO L427 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:08:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:08:49,121 INFO L82 PathProgramCache]: Analyzing trace with hash 668818992, now seen corresponding path program 79 times [2020-10-05 23:08:49,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:08:49,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673143545] [2020-10-05 23:08:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:08:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:49,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673143545] [2020-10-05 23:08:49,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458641000] [2020-10-05 23:08:49,200 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:08:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:08:49,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:08:49,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:08:49,372 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:08:49,373 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:08:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:08:50,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:08:50,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 23:08:50,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137047978] [2020-10-05 23:08:50,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 23:08:50,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:08:50,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 23:08:50,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240 [2020-10-05 23:08:50,597 INFO L87 Difference]: Start difference. First operand 141 states and 346 transitions. Second operand 16 states. [2020-10-05 23:08:52,604 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 44 [2020-10-05 23:08:59,751 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 51 [2020-10-05 23:09:02,557 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-05 23:09:41,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:41,854 INFO L93 Difference]: Finished difference Result 230 states and 544 transitions. [2020-10-05 23:09:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 23:09:41,858 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-05 23:09:41,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:41,859 INFO L225 Difference]: With dead ends: 230 [2020-10-05 23:09:41,859 INFO L226 Difference]: Without dead ends: 225 [2020-10-05 23:09:41,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=298, Invalid=687, Unknown=7, NotChecked=0, Total=992 [2020-10-05 23:09:41,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-05 23:09:41,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 140. [2020-10-05 23:09:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:09:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 341 transitions. [2020-10-05 23:09:41,863 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 341 transitions. Word has length 13 [2020-10-05 23:09:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:41,863 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 341 transitions. [2020-10-05 23:09:41,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 23:09:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 341 transitions. [2020-10-05 23:09:41,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:41,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:41,864 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:42,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:42,065 INFO L427 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:42,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:42,065 INFO L82 PathProgramCache]: Analyzing trace with hash 675254592, now seen corresponding path program 80 times [2020-10-05 23:09:42,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:42,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34368804] [2020-10-05 23:09:42,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:42,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34368804] [2020-10-05 23:09:42,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799639003] [2020-10-05 23:09:42,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:42,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:09:42,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:42,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:42,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:42,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:42,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:42,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546454636] [2020-10-05 23:09:42,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:42,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:42,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:42,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:42,326 INFO L87 Difference]: Start difference. First operand 140 states and 341 transitions. Second operand 15 states. [2020-10-05 23:09:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:42,606 INFO L93 Difference]: Finished difference Result 197 states and 457 transitions. [2020-10-05 23:09:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:09:42,607 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:42,607 INFO L225 Difference]: With dead ends: 197 [2020-10-05 23:09:42,607 INFO L226 Difference]: Without dead ends: 195 [2020-10-05 23:09:42,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:09:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-05 23:09:42,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2020-10-05 23:09:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:09:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 352 transitions. [2020-10-05 23:09:42,611 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 352 transitions. Word has length 13 [2020-10-05 23:09:42,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:42,611 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 352 transitions. [2020-10-05 23:09:42,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:42,611 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 352 transitions. [2020-10-05 23:09:42,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:42,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:42,612 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:42,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:42,817 INFO L427 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:42,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash 675255553, now seen corresponding path program 81 times [2020-10-05 23:09:42,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:42,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834864903] [2020-10-05 23:09:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:42,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834864903] [2020-10-05 23:09:42,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450447161] [2020-10-05 23:09:42,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:42,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:09:42,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:42,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:42,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:43,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:43,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:43,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140042048] [2020-10-05 23:09:43,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:43,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:43,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:43,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:43,066 INFO L87 Difference]: Start difference. First operand 143 states and 352 transitions. Second operand 15 states. [2020-10-05 23:09:43,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:43,351 INFO L93 Difference]: Finished difference Result 202 states and 467 transitions. [2020-10-05 23:09:43,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:09:43,352 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:43,353 INFO L225 Difference]: With dead ends: 202 [2020-10-05 23:09:43,353 INFO L226 Difference]: Without dead ends: 200 [2020-10-05 23:09:43,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:09:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-05 23:09:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2020-10-05 23:09:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:09:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 351 transitions. [2020-10-05 23:09:43,356 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 351 transitions. Word has length 13 [2020-10-05 23:09:43,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:43,356 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 351 transitions. [2020-10-05 23:09:43,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:43,356 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 351 transitions. [2020-10-05 23:09:43,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:43,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:43,357 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:43,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-05 23:09:43,559 INFO L427 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:43,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:43,559 INFO L82 PathProgramCache]: Analyzing trace with hash 675284383, now seen corresponding path program 82 times [2020-10-05 23:09:43,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:43,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814089374] [2020-10-05 23:09:43,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:43,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814089374] [2020-10-05 23:09:43,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639714453] [2020-10-05 23:09:43,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:43,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:09:43,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:43,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:43,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:43,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:43,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:43,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199527305] [2020-10-05 23:09:43,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:43,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:43,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:43,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:43,812 INFO L87 Difference]: Start difference. First operand 143 states and 351 transitions. Second operand 15 states. [2020-10-05 23:09:44,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:44,100 INFO L93 Difference]: Finished difference Result 197 states and 458 transitions. [2020-10-05 23:09:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:09:44,101 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:44,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:44,102 INFO L225 Difference]: With dead ends: 197 [2020-10-05 23:09:44,102 INFO L226 Difference]: Without dead ends: 195 [2020-10-05 23:09:44,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:09:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-05 23:09:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 142. [2020-10-05 23:09:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:09:44,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 348 transitions. [2020-10-05 23:09:44,105 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 348 transitions. Word has length 13 [2020-10-05 23:09:44,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:44,105 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 348 transitions. [2020-10-05 23:09:44,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:44,105 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 348 transitions. [2020-10-05 23:09:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:44,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:44,106 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:44,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-05 23:09:44,307 INFO L427 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:44,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:44,307 INFO L82 PathProgramCache]: Analyzing trace with hash 695810382, now seen corresponding path program 83 times [2020-10-05 23:09:44,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:44,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914226874] [2020-10-05 23:09:44,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:44,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914226874] [2020-10-05 23:09:44,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480347709] [2020-10-05 23:09:44,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:44,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:09:44,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:44,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:44,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:44,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:44,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:44,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402768512] [2020-10-05 23:09:44,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:44,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:44,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:44,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:44,613 INFO L87 Difference]: Start difference. First operand 142 states and 348 transitions. Second operand 15 states. [2020-10-05 23:09:45,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:45,280 INFO L93 Difference]: Finished difference Result 214 states and 496 transitions. [2020-10-05 23:09:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-05 23:09:45,282 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:45,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:45,283 INFO L225 Difference]: With dead ends: 214 [2020-10-05 23:09:45,283 INFO L226 Difference]: Without dead ends: 212 [2020-10-05 23:09:45,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-05 23:09:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-05 23:09:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2020-10-05 23:09:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 23:09:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 356 transitions. [2020-10-05 23:09:45,290 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 356 transitions. Word has length 13 [2020-10-05 23:09:45,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:45,290 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 356 transitions. [2020-10-05 23:09:45,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 356 transitions. [2020-10-05 23:09:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:45,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:45,291 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:45,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-05 23:09:45,506 INFO L427 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:45,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:45,507 INFO L82 PathProgramCache]: Analyzing trace with hash 695811343, now seen corresponding path program 84 times [2020-10-05 23:09:45,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:45,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067256122] [2020-10-05 23:09:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:45,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067256122] [2020-10-05 23:09:45,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784481148] [2020-10-05 23:09:45,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:45,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:09:45,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:45,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:45,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:45,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:45,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:45,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650917720] [2020-10-05 23:09:45,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:45,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:45,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:45,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:45,929 INFO L87 Difference]: Start difference. First operand 144 states and 356 transitions. Second operand 15 states. [2020-10-05 23:09:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:46,449 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2020-10-05 23:09:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:09:46,449 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:46,450 INFO L225 Difference]: With dead ends: 217 [2020-10-05 23:09:46,450 INFO L226 Difference]: Without dead ends: 215 [2020-10-05 23:09:46,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-05 23:09:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-05 23:09:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145. [2020-10-05 23:09:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:09:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-05 23:09:46,454 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-05 23:09:46,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:46,454 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-05 23:09:46,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:46,455 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-05 23:09:46,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:46,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:46,455 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:46,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:46,665 INFO L427 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:46,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:46,666 INFO L82 PathProgramCache]: Analyzing trace with hash 696473472, now seen corresponding path program 85 times [2020-10-05 23:09:46,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:46,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855397056] [2020-10-05 23:09:46,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:46,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855397056] [2020-10-05 23:09:46,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262314366] [2020-10-05 23:09:46,747 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:46,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:46,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:46,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:46,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:46,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124529850] [2020-10-05 23:09:46,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:46,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:46,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:46,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:46,928 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-05 23:09:47,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:47,381 INFO L93 Difference]: Finished difference Result 211 states and 500 transitions. [2020-10-05 23:09:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 23:09:47,382 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:47,383 INFO L225 Difference]: With dead ends: 211 [2020-10-05 23:09:47,383 INFO L226 Difference]: Without dead ends: 209 [2020-10-05 23:09:47,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-10-05 23:09:47,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-05 23:09:47,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 147. [2020-10-05 23:09:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 23:09:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 23:09:47,387 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 23:09:47,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:47,388 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 23:09:47,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 23:09:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:47,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:47,388 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:47,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:47,589 INFO L427 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:47,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:47,590 INFO L82 PathProgramCache]: Analyzing trace with hash 696494831, now seen corresponding path program 86 times [2020-10-05 23:09:47,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:47,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384289439] [2020-10-05 23:09:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:47,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384289439] [2020-10-05 23:09:47,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874541401] [2020-10-05 23:09:47,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:47,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:09:47,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:47,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:47,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:47,840 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:09:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:47,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:47,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:47,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094079443] [2020-10-05 23:09:47,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:47,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:47,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:47,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:47,853 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 23:09:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:48,362 INFO L93 Difference]: Finished difference Result 211 states and 507 transitions. [2020-10-05 23:09:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 23:09:48,363 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:48,364 INFO L225 Difference]: With dead ends: 211 [2020-10-05 23:09:48,364 INFO L226 Difference]: Without dead ends: 206 [2020-10-05 23:09:48,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2020-10-05 23:09:48,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-05 23:09:48,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147. [2020-10-05 23:09:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 23:09:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 23:09:48,367 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 23:09:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:48,367 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 23:09:48,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:48,368 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 23:09:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:48,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:48,368 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:48,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-05 23:09:48,569 INFO L427 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:48,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:48,569 INFO L82 PathProgramCache]: Analyzing trace with hash 696495792, now seen corresponding path program 87 times [2020-10-05 23:09:48,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:48,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634783291] [2020-10-05 23:09:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:48,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634783291] [2020-10-05 23:09:48,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308370168] [2020-10-05 23:09:48,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:48,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:09:48,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:48,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:48,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:48,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:09:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:48,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:48,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:48,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187286456] [2020-10-05 23:09:48,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:48,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:48,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:48,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:48,847 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 23:09:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:49,502 INFO L93 Difference]: Finished difference Result 227 states and 546 transitions. [2020-10-05 23:09:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:09:49,503 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:49,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:49,504 INFO L225 Difference]: With dead ends: 227 [2020-10-05 23:09:49,504 INFO L226 Difference]: Without dead ends: 222 [2020-10-05 23:09:49,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-05 23:09:49,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-05 23:09:49,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 145. [2020-10-05 23:09:49,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 23:09:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-05 23:09:49,508 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-05 23:09:49,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:49,508 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-05 23:09:49,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:49,508 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-05 23:09:49,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:49,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:49,509 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:49,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-05 23:09:49,709 INFO L427 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:49,710 INFO L82 PathProgramCache]: Analyzing trace with hash 696503263, now seen corresponding path program 88 times [2020-10-05 23:09:49,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:49,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989645268] [2020-10-05 23:09:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:49,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989645268] [2020-10-05 23:09:49,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626738421] [2020-10-05 23:09:49,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:49,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:09:49,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:49,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:49,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:49,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:49,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:49,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528343316] [2020-10-05 23:09:49,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:49,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:49,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:49,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:49,960 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-05 23:09:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:50,479 INFO L93 Difference]: Finished difference Result 221 states and 523 transitions. [2020-10-05 23:09:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-05 23:09:50,480 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:50,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:50,481 INFO L225 Difference]: With dead ends: 221 [2020-10-05 23:09:50,481 INFO L226 Difference]: Without dead ends: 219 [2020-10-05 23:09:50,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2020-10-05 23:09:50,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-05 23:09:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2020-10-05 23:09:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 23:09:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 23:09:50,487 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 23:09:50,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:50,487 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 23:09:50,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:50,487 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 23:09:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:50,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:50,488 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:50,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:50,691 INFO L427 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:50,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:50,691 INFO L82 PathProgramCache]: Analyzing trace with hash 696524622, now seen corresponding path program 89 times [2020-10-05 23:09:50,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:50,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47723834] [2020-10-05 23:09:50,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:50,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47723834] [2020-10-05 23:09:50,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365049261] [2020-10-05 23:09:50,776 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:50,814 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:09:50,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:50,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:50,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:50,923 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:09:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:50,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:50,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:50,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713508432] [2020-10-05 23:09:50,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:50,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:50,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:50,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:50,936 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 23:09:51,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:51,559 INFO L93 Difference]: Finished difference Result 240 states and 577 transitions. [2020-10-05 23:09:51,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:09:51,559 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:51,560 INFO L225 Difference]: With dead ends: 240 [2020-10-05 23:09:51,560 INFO L226 Difference]: Without dead ends: 232 [2020-10-05 23:09:51,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 23:09:51,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-05 23:09:51,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148. [2020-10-05 23:09:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-05 23:09:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 372 transitions. [2020-10-05 23:09:51,564 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 372 transitions. Word has length 13 [2020-10-05 23:09:51,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:51,564 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 372 transitions. [2020-10-05 23:09:51,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:51,564 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 372 transitions. [2020-10-05 23:09:51,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:51,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:51,565 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:51,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-05 23:09:51,774 INFO L427 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:51,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:51,774 INFO L82 PathProgramCache]: Analyzing trace with hash 696525583, now seen corresponding path program 90 times [2020-10-05 23:09:51,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:51,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758460142] [2020-10-05 23:09:51,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:51,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758460142] [2020-10-05 23:09:51,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978321643] [2020-10-05 23:09:51,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:51,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:09:51,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:51,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:51,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:52,075 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:09:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:52,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:52,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:52,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621364464] [2020-10-05 23:09:52,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:52,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:52,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:52,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:52,096 INFO L87 Difference]: Start difference. First operand 148 states and 372 transitions. Second operand 15 states. [2020-10-05 23:09:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:52,956 INFO L93 Difference]: Finished difference Result 238 states and 576 transitions. [2020-10-05 23:09:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:09:52,957 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:52,958 INFO L225 Difference]: With dead ends: 238 [2020-10-05 23:09:52,959 INFO L226 Difference]: Without dead ends: 230 [2020-10-05 23:09:52,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 23:09:52,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-05 23:09:52,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142. [2020-10-05 23:09:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:09:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-05 23:09:52,965 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-05 23:09:52,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:52,965 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-05 23:09:52,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:52,966 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-05 23:09:52,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:52,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:52,966 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:53,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:53,178 INFO L427 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:53,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:53,179 INFO L82 PathProgramCache]: Analyzing trace with hash 696733903, now seen corresponding path program 91 times [2020-10-05 23:09:53,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:53,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238182362] [2020-10-05 23:09:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:53,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238182362] [2020-10-05 23:09:53,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082609505] [2020-10-05 23:09:53,296 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:53,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:53,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:53,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:53,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:53,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476506285] [2020-10-05 23:09:53,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:53,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:53,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:53,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:53,571 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-05 23:09:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:53,868 INFO L93 Difference]: Finished difference Result 195 states and 459 transitions. [2020-10-05 23:09:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:09:53,869 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:53,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:53,870 INFO L225 Difference]: With dead ends: 195 [2020-10-05 23:09:53,870 INFO L226 Difference]: Without dead ends: 193 [2020-10-05 23:09:53,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:09:53,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-05 23:09:53,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2020-10-05 23:09:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:09:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-05 23:09:53,873 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-05 23:09:53,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:53,874 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-05 23:09:53,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-05 23:09:53,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:53,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:53,874 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:54,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-10-05 23:09:54,084 INFO L427 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:54,085 INFO L82 PathProgramCache]: Analyzing trace with hash 697396993, now seen corresponding path program 92 times [2020-10-05 23:09:54,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:54,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805302851] [2020-10-05 23:09:54,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:54,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805302851] [2020-10-05 23:09:54,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837194432] [2020-10-05 23:09:54,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:54,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:09:54,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:54,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:54,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:54,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:54,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:09:54,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121606642] [2020-10-05 23:09:54,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:09:54,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:54,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:09:54,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:09:54,360 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-05 23:09:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:09:54,881 INFO L93 Difference]: Finished difference Result 206 states and 489 transitions. [2020-10-05 23:09:54,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:09:54,882 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:09:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:09:54,883 INFO L225 Difference]: With dead ends: 206 [2020-10-05 23:09:54,883 INFO L226 Difference]: Without dead ends: 204 [2020-10-05 23:09:54,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-10-05 23:09:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-05 23:09:54,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 143. [2020-10-05 23:09:54,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 23:09:54,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 356 transitions. [2020-10-05 23:09:54,886 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 356 transitions. Word has length 13 [2020-10-05 23:09:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:09:54,887 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 356 transitions. [2020-10-05 23:09:54,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:09:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 356 transitions. [2020-10-05 23:09:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:09:54,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:09:54,887 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:09:55,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:55,088 INFO L427 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:09:55,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:09:55,089 INFO L82 PathProgramCache]: Analyzing trace with hash 697419313, now seen corresponding path program 93 times [2020-10-05 23:09:55,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:09:55,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999298352] [2020-10-05 23:09:55,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:09:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:09:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:55,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999298352] [2020-10-05 23:09:55,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001079276] [2020-10-05 23:09:55,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:09:55,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:09:55,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:09:55,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:09:55,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:09:55,402 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:09:59,025 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-05 23:09:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:09:59,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:09:59,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 23:09:59,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957814532] [2020-10-05 23:09:59,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 23:09:59,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:09:59,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 23:09:59,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-05 23:09:59,027 INFO L87 Difference]: Start difference. First operand 143 states and 356 transitions. Second operand 16 states. [2020-10-05 23:10:01,535 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-05 23:10:21,962 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-05 23:10:53,720 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-10-05 23:11:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:13,423 INFO L93 Difference]: Finished difference Result 239 states and 570 transitions. [2020-10-05 23:11:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-05 23:11:13,427 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-05 23:11:13,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:13,428 INFO L225 Difference]: With dead ends: 239 [2020-10-05 23:11:13,428 INFO L226 Difference]: Without dead ends: 234 [2020-10-05 23:11:13,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=389, Invalid=934, Unknown=9, NotChecked=0, Total=1332 [2020-10-05 23:11:13,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-05 23:11:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 139. [2020-10-05 23:11:13,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:11:13,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 339 transitions. [2020-10-05 23:11:13,432 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 339 transitions. Word has length 13 [2020-10-05 23:11:13,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:13,433 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 339 transitions. [2020-10-05 23:11:13,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 23:11:13,433 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 339 transitions. [2020-10-05 23:11:13,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:13,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:13,433 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:13,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-05 23:11:13,642 INFO L427 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:13,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:13,642 INFO L82 PathProgramCache]: Analyzing trace with hash 896899632, now seen corresponding path program 94 times [2020-10-05 23:11:13,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:13,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12086640] [2020-10-05 23:11:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:13,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12086640] [2020-10-05 23:11:13,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808145387] [2020-10-05 23:11:13,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:13,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:13,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:13,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:13,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:13,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:13,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:13,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752465604] [2020-10-05 23:11:13,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:13,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:13,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:13,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:13,904 INFO L87 Difference]: Start difference. First operand 139 states and 339 transitions. Second operand 15 states. [2020-10-05 23:11:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:14,134 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-05 23:11:14,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:11:14,135 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:14,135 INFO L225 Difference]: With dead ends: 194 [2020-10-05 23:11:14,135 INFO L226 Difference]: Without dead ends: 192 [2020-10-05 23:11:14,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:11:14,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-05 23:11:14,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 141. [2020-10-05 23:11:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:11:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 345 transitions. [2020-10-05 23:11:14,139 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 345 transitions. Word has length 13 [2020-10-05 23:11:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:14,139 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 345 transitions. [2020-10-05 23:11:14,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 345 transitions. [2020-10-05 23:11:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:14,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:14,140 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:14,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:14,341 INFO L427 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:14,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:14,341 INFO L82 PathProgramCache]: Analyzing trace with hash 896900593, now seen corresponding path program 95 times [2020-10-05 23:11:14,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:14,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899826100] [2020-10-05 23:11:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:14,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899826100] [2020-10-05 23:11:14,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158388909] [2020-10-05 23:11:14,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:14,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:11:14,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:14,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:14,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:14,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:14,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:14,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480990220] [2020-10-05 23:11:14,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:14,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:14,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:14,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:14,606 INFO L87 Difference]: Start difference. First operand 141 states and 345 transitions. Second operand 15 states. [2020-10-05 23:11:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:14,918 INFO L93 Difference]: Finished difference Result 205 states and 471 transitions. [2020-10-05 23:11:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:11:14,919 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:14,920 INFO L225 Difference]: With dead ends: 205 [2020-10-05 23:11:14,920 INFO L226 Difference]: Without dead ends: 203 [2020-10-05 23:11:14,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:11:14,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-05 23:11:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 142. [2020-10-05 23:11:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:11:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 347 transitions. [2020-10-05 23:11:14,925 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 347 transitions. Word has length 13 [2020-10-05 23:11:14,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:14,925 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 347 transitions. [2020-10-05 23:11:14,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:14,925 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 347 transitions. [2020-10-05 23:11:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:14,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:14,926 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:15,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:15,136 INFO L427 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:15,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:15,136 INFO L82 PathProgramCache]: Analyzing trace with hash 896929423, now seen corresponding path program 96 times [2020-10-05 23:11:15,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:15,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039069544] [2020-10-05 23:11:15,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:15,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039069544] [2020-10-05 23:11:15,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704188432] [2020-10-05 23:11:15,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:15,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:11:15,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:15,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:15,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:15,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:15,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:15,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282363099] [2020-10-05 23:11:15,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:15,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:15,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:15,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:15,388 INFO L87 Difference]: Start difference. First operand 142 states and 347 transitions. Second operand 15 states. [2020-10-05 23:11:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:15,655 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-05 23:11:15,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:11:15,656 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:15,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:15,656 INFO L225 Difference]: With dead ends: 201 [2020-10-05 23:11:15,656 INFO L226 Difference]: Without dead ends: 199 [2020-10-05 23:11:15,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:11:15,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-05 23:11:15,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 137. [2020-10-05 23:11:15,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 23:11:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-05 23:11:15,659 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-05 23:11:15,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:15,659 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-05 23:11:15,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-05 23:11:15,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:15,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:15,660 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:15,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:15,861 INFO L427 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:15,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:15,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1534129122, now seen corresponding path program 97 times [2020-10-05 23:11:15,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:15,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983913038] [2020-10-05 23:11:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:15,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983913038] [2020-10-05 23:11:15,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331283056] [2020-10-05 23:11:15,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:15,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:15,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:16,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:16,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:16,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518208267] [2020-10-05 23:11:16,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:16,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:16,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:16,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:16,184 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 15 states. [2020-10-05 23:11:16,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:16,491 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-05 23:11:16,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:11:16,492 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:16,493 INFO L225 Difference]: With dead ends: 194 [2020-10-05 23:11:16,493 INFO L226 Difference]: Without dead ends: 192 [2020-10-05 23:11:16,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:11:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-05 23:11:16,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2020-10-05 23:11:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:11:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 345 transitions. [2020-10-05 23:11:16,497 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 345 transitions. Word has length 13 [2020-10-05 23:11:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:16,498 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 345 transitions. [2020-10-05 23:11:16,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 345 transitions. [2020-10-05 23:11:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:16,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:16,499 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:16,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-05 23:11:16,709 INFO L427 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:16,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:16,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1534130083, now seen corresponding path program 98 times [2020-10-05 23:11:16,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:16,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036861567] [2020-10-05 23:11:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:16,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036861567] [2020-10-05 23:11:16,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444706803] [2020-10-05 23:11:16,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:16,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:16,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:16,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:16,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:16,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:16,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:16,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176873975] [2020-10-05 23:11:16,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:16,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:16,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:16,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:16,981 INFO L87 Difference]: Start difference. First operand 140 states and 345 transitions. Second operand 15 states. [2020-10-05 23:11:17,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:17,346 INFO L93 Difference]: Finished difference Result 209 states and 478 transitions. [2020-10-05 23:11:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 23:11:17,346 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:17,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:17,347 INFO L225 Difference]: With dead ends: 209 [2020-10-05 23:11:17,347 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 23:11:17,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:11:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 23:11:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 140. [2020-10-05 23:11:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:11:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 344 transitions. [2020-10-05 23:11:17,351 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 344 transitions. Word has length 13 [2020-10-05 23:11:17,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:17,351 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 344 transitions. [2020-10-05 23:11:17,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 344 transitions. [2020-10-05 23:11:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:17,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:17,352 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:17,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:17,553 INFO L427 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:17,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:17,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1534158913, now seen corresponding path program 99 times [2020-10-05 23:11:17,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:17,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387363072] [2020-10-05 23:11:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:17,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387363072] [2020-10-05 23:11:17,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144158448] [2020-10-05 23:11:17,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:17,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:11:17,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:17,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:17,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:17,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:17,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:17,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912492544] [2020-10-05 23:11:17,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:17,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:17,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:17,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:17,804 INFO L87 Difference]: Start difference. First operand 140 states and 344 transitions. Second operand 15 states. [2020-10-05 23:11:18,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:18,138 INFO L93 Difference]: Finished difference Result 202 states and 464 transitions. [2020-10-05 23:11:18,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 23:11:18,139 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:18,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:18,139 INFO L225 Difference]: With dead ends: 202 [2020-10-05 23:11:18,139 INFO L226 Difference]: Without dead ends: 200 [2020-10-05 23:11:18,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:11:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-05 23:11:18,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-10-05 23:11:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:11:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-05 23:11:18,142 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-05 23:11:18,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:18,143 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-05 23:11:18,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-05 23:11:18,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:18,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:18,143 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:18,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-05 23:11:18,344 INFO L427 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:18,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:18,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1554684912, now seen corresponding path program 100 times [2020-10-05 23:11:18,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:18,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718583707] [2020-10-05 23:11:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:18,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718583707] [2020-10-05 23:11:18,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37547400] [2020-10-05 23:11:18,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:18,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:18,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:18,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:18,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:18,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:18,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:18,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646251507] [2020-10-05 23:11:18,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:18,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:18,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:18,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:18,597 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 15 states. [2020-10-05 23:11:18,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:18,912 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-05 23:11:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:11:18,913 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:18,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:18,914 INFO L225 Difference]: With dead ends: 201 [2020-10-05 23:11:18,914 INFO L226 Difference]: Without dead ends: 199 [2020-10-05 23:11:18,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:11:18,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-05 23:11:18,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 141. [2020-10-05 23:11:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 23:11:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 349 transitions. [2020-10-05 23:11:18,920 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 349 transitions. Word has length 13 [2020-10-05 23:11:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:18,920 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 349 transitions. [2020-10-05 23:11:18,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 349 transitions. [2020-10-05 23:11:18,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:18,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:18,922 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:19,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-05 23:11:19,129 INFO L427 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:19,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1554685873, now seen corresponding path program 101 times [2020-10-05 23:11:19,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:19,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058926857] [2020-10-05 23:11:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:19,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058926857] [2020-10-05 23:11:19,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612148575] [2020-10-05 23:11:19,221 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:19,259 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:11:19,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:19,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:19,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:19,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:19,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:19,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167461909] [2020-10-05 23:11:19,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:19,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:19,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:19,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:19,404 INFO L87 Difference]: Start difference. First operand 141 states and 349 transitions. Second operand 15 states. [2020-10-05 23:11:19,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:19,862 INFO L93 Difference]: Finished difference Result 215 states and 495 transitions. [2020-10-05 23:11:19,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-05 23:11:19,863 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:19,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:19,863 INFO L225 Difference]: With dead ends: 215 [2020-10-05 23:11:19,863 INFO L226 Difference]: Without dead ends: 213 [2020-10-05 23:11:19,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2020-10-05 23:11:19,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-05 23:11:19,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 142. [2020-10-05 23:11:19,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:11:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-05 23:11:19,868 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-05 23:11:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:19,868 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-05 23:11:19,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-05 23:11:19,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:19,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:19,869 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:20,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:20,073 INFO L427 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:20,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:20,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1555348002, now seen corresponding path program 102 times [2020-10-05 23:11:20,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:20,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84552674] [2020-10-05 23:11:20,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:20,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84552674] [2020-10-05 23:11:20,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106799654] [2020-10-05 23:11:20,158 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:20,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:11:20,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:20,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:20,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:20,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:20,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:20,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108508109] [2020-10-05 23:11:20,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:20,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:20,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:20,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:20,335 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-05 23:11:20,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:20,724 INFO L93 Difference]: Finished difference Result 196 states and 461 transitions. [2020-10-05 23:11:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:11:20,725 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:20,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:20,726 INFO L225 Difference]: With dead ends: 196 [2020-10-05 23:11:20,726 INFO L226 Difference]: Without dead ends: 194 [2020-10-05 23:11:20,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2020-10-05 23:11:20,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-05 23:11:20,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144. [2020-10-05 23:11:20,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 23:11:20,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 23:11:20,730 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 23:11:20,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:20,730 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 23:11:20,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 23:11:20,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:20,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:20,731 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:20,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:20,935 INFO L427 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:20,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:20,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1555369361, now seen corresponding path program 103 times [2020-10-05 23:11:20,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:20,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277874816] [2020-10-05 23:11:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:21,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277874816] [2020-10-05 23:11:21,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699695022] [2020-10-05 23:11:21,024 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:21,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:21,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:21,167 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:11:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:21,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:21,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:21,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612211041] [2020-10-05 23:11:21,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:21,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:21,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:21,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:21,181 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 23:11:21,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:21,495 INFO L93 Difference]: Finished difference Result 191 states and 460 transitions. [2020-10-05 23:11:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:11:21,497 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:21,498 INFO L225 Difference]: With dead ends: 191 [2020-10-05 23:11:21,499 INFO L226 Difference]: Without dead ends: 186 [2020-10-05 23:11:21,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:11:21,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-05 23:11:21,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144. [2020-10-05 23:11:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 23:11:21,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 23:11:21,501 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 23:11:21,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:21,502 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 23:11:21,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:21,502 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 23:11:21,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:21,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:21,502 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:21,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-05 23:11:21,703 INFO L427 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:21,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:21,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1555370322, now seen corresponding path program 104 times [2020-10-05 23:11:21,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:21,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492426415] [2020-10-05 23:11:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:21,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492426415] [2020-10-05 23:11:21,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997688580] [2020-10-05 23:11:21,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:21,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:21,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:21,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:21,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:21,938 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:11:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:21,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:21,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:21,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475863351] [2020-10-05 23:11:21,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:21,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:21,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:21,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:21,978 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 23:11:22,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:22,547 INFO L93 Difference]: Finished difference Result 232 states and 551 transitions. [2020-10-05 23:11:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 23:11:22,548 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:22,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:22,548 INFO L225 Difference]: With dead ends: 232 [2020-10-05 23:11:22,548 INFO L226 Difference]: Without dead ends: 227 [2020-10-05 23:11:22,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-10-05 23:11:22,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-05 23:11:22,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 142. [2020-10-05 23:11:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 23:11:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-05 23:11:22,553 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-05 23:11:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:22,553 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-05 23:11:22,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:22,553 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-05 23:11:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:22,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:22,554 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:22,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:22,764 INFO L427 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:22,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:22,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1555377793, now seen corresponding path program 105 times [2020-10-05 23:11:22,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:22,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671608923] [2020-10-05 23:11:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:22,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671608923] [2020-10-05 23:11:22,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234274402] [2020-10-05 23:11:22,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:22,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:11:22,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:22,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:22,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:23,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:23,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:23,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752236167] [2020-10-05 23:11:23,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:23,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:23,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:23,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:23,032 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-05 23:11:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:23,594 INFO L93 Difference]: Finished difference Result 222 states and 521 transitions. [2020-10-05 23:11:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-05 23:11:23,595 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:23,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:23,596 INFO L225 Difference]: With dead ends: 222 [2020-10-05 23:11:23,596 INFO L226 Difference]: Without dead ends: 220 [2020-10-05 23:11:23,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2020-10-05 23:11:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-05 23:11:23,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 144. [2020-10-05 23:11:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 23:11:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 23:11:23,599 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 23:11:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:23,599 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 23:11:23,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 23:11:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:23,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:23,600 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:23,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:23,801 INFO L427 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:23,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:23,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1555399152, now seen corresponding path program 106 times [2020-10-05 23:11:23,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:23,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396302434] [2020-10-05 23:11:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:23,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396302434] [2020-10-05 23:11:23,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628379980] [2020-10-05 23:11:23,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:23,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:23,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:23,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:23,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:24,061 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:11:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:24,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:24,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:24,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065524102] [2020-10-05 23:11:24,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:24,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:24,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:24,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:24,095 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 23:11:24,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:24,891 INFO L93 Difference]: Finished difference Result 254 states and 608 transitions. [2020-10-05 23:11:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:11:24,892 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:24,893 INFO L225 Difference]: With dead ends: 254 [2020-10-05 23:11:24,893 INFO L226 Difference]: Without dead ends: 246 [2020-10-05 23:11:24,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 23:11:24,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-05 23:11:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 146. [2020-10-05 23:11:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-05 23:11:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-05 23:11:24,899 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 13 [2020-10-05 23:11:24,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:24,899 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-05 23:11:24,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-05 23:11:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:24,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:24,900 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:25,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:25,110 INFO L427 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:25,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:25,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1555400113, now seen corresponding path program 107 times [2020-10-05 23:11:25,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:25,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318177636] [2020-10-05 23:11:25,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:25,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318177636] [2020-10-05 23:11:25,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528193036] [2020-10-05 23:11:25,193 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:25,232 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:11:25,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:25,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:25,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:25,373 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:11:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:25,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:25,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:25,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638631896] [2020-10-05 23:11:25,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:25,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:25,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:25,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:25,403 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 15 states. [2020-10-05 23:11:26,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:26,205 INFO L93 Difference]: Finished difference Result 246 states and 581 transitions. [2020-10-05 23:11:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:11:26,205 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:26,206 INFO L225 Difference]: With dead ends: 246 [2020-10-05 23:11:26,207 INFO L226 Difference]: Without dead ends: 238 [2020-10-05 23:11:26,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2020-10-05 23:11:26,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-05 23:11:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 139. [2020-10-05 23:11:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:11:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 344 transitions. [2020-10-05 23:11:26,213 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 344 transitions. Word has length 13 [2020-10-05 23:11:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:26,214 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 344 transitions. [2020-10-05 23:11:26,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 344 transitions. [2020-10-05 23:11:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:26,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:26,214 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:26,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2020-10-05 23:11:26,424 INFO L427 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:26,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:26,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1555608433, now seen corresponding path program 108 times [2020-10-05 23:11:26,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:26,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513382325] [2020-10-05 23:11:26,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:26,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513382325] [2020-10-05 23:11:26,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401686410] [2020-10-05 23:11:26,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:26,541 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:11:26,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:26,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:26,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:26,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:26,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:26,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808832676] [2020-10-05 23:11:26,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:26,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:26,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:26,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:26,679 INFO L87 Difference]: Start difference. First operand 139 states and 344 transitions. Second operand 15 states. [2020-10-05 23:11:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:27,089 INFO L93 Difference]: Finished difference Result 208 states and 483 transitions. [2020-10-05 23:11:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:11:27,090 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:27,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:27,091 INFO L225 Difference]: With dead ends: 208 [2020-10-05 23:11:27,091 INFO L226 Difference]: Without dead ends: 206 [2020-10-05 23:11:27,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2020-10-05 23:11:27,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-05 23:11:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 136. [2020-10-05 23:11:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 23:11:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 337 transitions. [2020-10-05 23:11:27,095 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 337 transitions. Word has length 13 [2020-10-05 23:11:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:27,095 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 337 transitions. [2020-10-05 23:11:27,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 337 transitions. [2020-10-05 23:11:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:27,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:27,095 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:27,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-05 23:11:27,296 INFO L427 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:27,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:27,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1556271523, now seen corresponding path program 109 times [2020-10-05 23:11:27,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:27,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808822763] [2020-10-05 23:11:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:27,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808822763] [2020-10-05 23:11:27,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439825508] [2020-10-05 23:11:27,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:27,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:27,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:27,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:27,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:27,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597797233] [2020-10-05 23:11:27,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:27,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:27,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:27,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:27,562 INFO L87 Difference]: Start difference. First operand 136 states and 337 transitions. Second operand 15 states. [2020-10-05 23:11:28,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:28,101 INFO L93 Difference]: Finished difference Result 215 states and 507 transitions. [2020-10-05 23:11:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 23:11:28,102 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:28,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:28,103 INFO L225 Difference]: With dead ends: 215 [2020-10-05 23:11:28,103 INFO L226 Difference]: Without dead ends: 213 [2020-10-05 23:11:28,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=605, Unknown=0, NotChecked=0, Total=870 [2020-10-05 23:11:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-05 23:11:28,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 137. [2020-10-05 23:11:28,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 23:11:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-05 23:11:28,107 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-05 23:11:28,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:28,107 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-05 23:11:28,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:28,108 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-05 23:11:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:28,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:28,108 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:28,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-05 23:11:28,317 INFO L427 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:28,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1556292882, now seen corresponding path program 110 times [2020-10-05 23:11:28,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:28,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289109123] [2020-10-05 23:11:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:28,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289109123] [2020-10-05 23:11:28,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809934858] [2020-10-05 23:11:28,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:28,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:28,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:28,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:28,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:28,547 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:11:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:28,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:28,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:28,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493838124] [2020-10-05 23:11:28,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:28,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:28,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:28,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:28,559 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-05 23:11:29,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:29,146 INFO L93 Difference]: Finished difference Result 236 states and 563 transitions. [2020-10-05 23:11:29,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:11:29,147 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:29,148 INFO L225 Difference]: With dead ends: 236 [2020-10-05 23:11:29,148 INFO L226 Difference]: Without dead ends: 228 [2020-10-05 23:11:29,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 23:11:29,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-05 23:11:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 137. [2020-10-05 23:11:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 23:11:29,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-05 23:11:29,150 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-05 23:11:29,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:29,151 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-05 23:11:29,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:29,151 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-05 23:11:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:29,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:29,151 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:29,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-05 23:11:29,352 INFO L427 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:29,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1556293843, now seen corresponding path program 111 times [2020-10-05 23:11:29,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:29,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559244389] [2020-10-05 23:11:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:29,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559244389] [2020-10-05 23:11:29,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181495607] [2020-10-05 23:11:29,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:29,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:11:29,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:29,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:29,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:29,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:11:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:29,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:29,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:29,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379275384] [2020-10-05 23:11:29,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:29,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:29,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:29,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:29,620 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-05 23:11:30,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:30,279 INFO L93 Difference]: Finished difference Result 241 states and 576 transitions. [2020-10-05 23:11:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 23:11:30,283 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:30,283 INFO L225 Difference]: With dead ends: 241 [2020-10-05 23:11:30,284 INFO L226 Difference]: Without dead ends: 233 [2020-10-05 23:11:30,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 23:11:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-05 23:11:30,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 133. [2020-10-05 23:11:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-05 23:11:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-05 23:11:30,287 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-05 23:11:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:30,287 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-05 23:11:30,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-05 23:11:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:30,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:30,288 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:30,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-05 23:11:30,489 INFO L427 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:30,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:30,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1556322673, now seen corresponding path program 112 times [2020-10-05 23:11:30,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:30,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612881724] [2020-10-05 23:11:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:30,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612881724] [2020-10-05 23:11:30,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423979713] [2020-10-05 23:11:30,573 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:30,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:30,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:30,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:11:30,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:30,731 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:11:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:30,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:30,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 23:11:30,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356225137] [2020-10-05 23:11:30,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:11:30,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:30,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:11:30,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:11:30,746 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 15 states. [2020-10-05 23:11:31,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:31,370 INFO L93 Difference]: Finished difference Result 232 states and 545 transitions. [2020-10-05 23:11:31,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 23:11:31,370 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 23:11:31,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:31,371 INFO L225 Difference]: With dead ends: 232 [2020-10-05 23:11:31,371 INFO L226 Difference]: Without dead ends: 224 [2020-10-05 23:11:31,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-05 23:11:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-05 23:11:31,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 130. [2020-10-05 23:11:31,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-05 23:11:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-05 23:11:31,375 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-05 23:11:31,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:31,375 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-05 23:11:31,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:11:31,375 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-05 23:11:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:31,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:31,376 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:31,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:31,585 INFO L427 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:31,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:31,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1725446472, now seen corresponding path program 6 times [2020-10-05 23:11:31,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:31,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331943002] [2020-10-05 23:11:31,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:31,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331943002] [2020-10-05 23:11:31,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577256795] [2020-10-05 23:11:31,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:31,735 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-05 23:11:31,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:31,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:31,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:31,904 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:11:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:31,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:31,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-05 23:11:31,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354137505] [2020-10-05 23:11:31,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-05 23:11:31,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:31,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-05 23:11:31,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:11:31,938 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 18 states. [2020-10-05 23:11:32,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:32,269 INFO L93 Difference]: Finished difference Result 185 states and 431 transitions. [2020-10-05 23:11:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:11:32,270 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 13 [2020-10-05 23:11:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:32,271 INFO L225 Difference]: With dead ends: 185 [2020-10-05 23:11:32,271 INFO L226 Difference]: Without dead ends: 180 [2020-10-05 23:11:32,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:11:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-05 23:11:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2020-10-05 23:11:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 23:11:32,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-05 23:11:32,276 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-05 23:11:32,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:32,277 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-05 23:11:32,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-05 23:11:32,277 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-05 23:11:32,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:32,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:32,278 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:32,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-05 23:11:32,490 INFO L427 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:32,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:32,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1934382410, now seen corresponding path program 21 times [2020-10-05 23:11:32,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:32,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644807608] [2020-10-05 23:11:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:32,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644807608] [2020-10-05 23:11:32,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890630323] [2020-10-05 23:11:32,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:32,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-05 23:11:32,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:32,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:32,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:33,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:33,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:33,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861905967] [2020-10-05 23:11:33,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:33,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:33,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:33,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:33,026 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 17 states. [2020-10-05 23:11:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:33,091 INFO L93 Difference]: Finished difference Result 180 states and 423 transitions. [2020-10-05 23:11:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:11:33,092 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:33,093 INFO L225 Difference]: With dead ends: 180 [2020-10-05 23:11:33,093 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 23:11:33,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:33,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 23:11:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 148. [2020-10-05 23:11:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-05 23:11:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-05 23:11:33,097 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-05 23:11:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:33,097 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-05 23:11:33,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-05 23:11:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:33,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:33,098 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:33,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-05 23:11:33,305 INFO L427 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:33,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:33,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1413108102, now seen corresponding path program 22 times [2020-10-05 23:11:33,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:33,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654265946] [2020-10-05 23:11:33,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:33,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654265946] [2020-10-05 23:11:33,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249057345] [2020-10-05 23:11:33,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:33,498 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:33,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:33,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:33,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:33,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:33,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:33,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105140025] [2020-10-05 23:11:33,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:33,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:33,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:33,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:33,679 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-05 23:11:33,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:33,770 INFO L93 Difference]: Finished difference Result 197 states and 456 transitions. [2020-10-05 23:11:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:11:33,771 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:33,772 INFO L225 Difference]: With dead ends: 197 [2020-10-05 23:11:33,772 INFO L226 Difference]: Without dead ends: 194 [2020-10-05 23:11:33,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:11:33,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-05 23:11:33,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 148. [2020-10-05 23:11:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-05 23:11:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-05 23:11:33,776 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-05 23:11:33,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:33,776 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-05 23:11:33,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:33,776 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-05 23:11:33,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:33,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:33,777 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:33,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:33,986 INFO L427 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:33,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:33,986 INFO L82 PathProgramCache]: Analyzing trace with hash 551260342, now seen corresponding path program 23 times [2020-10-05 23:11:33,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:33,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348108200] [2020-10-05 23:11:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:34,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348108200] [2020-10-05 23:11:34,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982417106] [2020-10-05 23:11:34,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:34,193 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-05 23:11:34,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:34,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:34,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:34,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:34,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:34,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947884652] [2020-10-05 23:11:34,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:34,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:34,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:34,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:34,375 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-05 23:11:34,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:34,477 INFO L93 Difference]: Finished difference Result 196 states and 456 transitions. [2020-10-05 23:11:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:11:34,478 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:34,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:34,479 INFO L225 Difference]: With dead ends: 196 [2020-10-05 23:11:34,479 INFO L226 Difference]: Without dead ends: 193 [2020-10-05 23:11:34,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:11:34,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-05 23:11:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149. [2020-10-05 23:11:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-05 23:11:34,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 367 transitions. [2020-10-05 23:11:34,482 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 367 transitions. Word has length 13 [2020-10-05 23:11:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:34,482 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 367 transitions. [2020-10-05 23:11:34,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 367 transitions. [2020-10-05 23:11:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:34,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:34,483 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:34,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:34,683 INFO L427 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:34,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:34,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1216195462, now seen corresponding path program 24 times [2020-10-05 23:11:34,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:34,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807915258] [2020-10-05 23:11:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:34,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807915258] [2020-10-05 23:11:34,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849455195] [2020-10-05 23:11:34,811 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:34,853 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-05 23:11:34,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:34,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:34,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:35,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:35,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:35,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324378201] [2020-10-05 23:11:35,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:35,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:35,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:35,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:35,032 INFO L87 Difference]: Start difference. First operand 149 states and 367 transitions. Second operand 17 states. [2020-10-05 23:11:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:35,170 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-05 23:11:35,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:11:35,170 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:35,171 INFO L225 Difference]: With dead ends: 195 [2020-10-05 23:11:35,171 INFO L226 Difference]: Without dead ends: 192 [2020-10-05 23:11:35,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:11:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-05 23:11:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 150. [2020-10-05 23:11:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-05 23:11:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 372 transitions. [2020-10-05 23:11:35,174 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 372 transitions. Word has length 13 [2020-10-05 23:11:35,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:35,175 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 372 transitions. [2020-10-05 23:11:35,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 372 transitions. [2020-10-05 23:11:35,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:35,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:35,175 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:35,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:35,376 INFO L427 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:35,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:35,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1237644982, now seen corresponding path program 25 times [2020-10-05 23:11:35,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:35,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526982903] [2020-10-05 23:11:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:35,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526982903] [2020-10-05 23:11:35,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279481208] [2020-10-05 23:11:35,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:35,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:35,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:35,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:35,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:35,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786308522] [2020-10-05 23:11:35,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:35,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:35,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:35,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:35,708 INFO L87 Difference]: Start difference. First operand 150 states and 372 transitions. Second operand 17 states. [2020-10-05 23:11:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:35,884 INFO L93 Difference]: Finished difference Result 194 states and 456 transitions. [2020-10-05 23:11:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:11:35,884 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:35,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:35,885 INFO L225 Difference]: With dead ends: 194 [2020-10-05 23:11:35,886 INFO L226 Difference]: Without dead ends: 191 [2020-10-05 23:11:35,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:11:35,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-05 23:11:35,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 152. [2020-10-05 23:11:35,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-05 23:11:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 379 transitions. [2020-10-05 23:11:35,890 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 379 transitions. Word has length 13 [2020-10-05 23:11:35,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:35,890 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 379 transitions. [2020-10-05 23:11:35,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 379 transitions. [2020-10-05 23:11:35,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:35,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:35,891 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:36,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:36,099 INFO L427 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:36,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1238336902, now seen corresponding path program 26 times [2020-10-05 23:11:36,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:36,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287383970] [2020-10-05 23:11:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:36,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287383970] [2020-10-05 23:11:36,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685703965] [2020-10-05 23:11:36,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:36,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:36,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:36,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:36,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:36,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:36,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:36,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043226263] [2020-10-05 23:11:36,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:36,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:36,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:36,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:36,451 INFO L87 Difference]: Start difference. First operand 152 states and 379 transitions. Second operand 17 states. [2020-10-05 23:11:36,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:36,658 INFO L93 Difference]: Finished difference Result 193 states and 456 transitions. [2020-10-05 23:11:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:11:36,658 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:36,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:36,659 INFO L225 Difference]: With dead ends: 193 [2020-10-05 23:11:36,659 INFO L226 Difference]: Without dead ends: 190 [2020-10-05 23:11:36,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:11:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-05 23:11:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-10-05 23:11:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-05 23:11:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 386 transitions. [2020-10-05 23:11:36,663 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 386 transitions. Word has length 13 [2020-10-05 23:11:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:36,663 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 386 transitions. [2020-10-05 23:11:36,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 386 transitions. [2020-10-05 23:11:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 23:11:36,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:36,663 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:36,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-05 23:11:36,864 INFO L427 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:36,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:36,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1238359222, now seen corresponding path program 27 times [2020-10-05 23:11:36,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:36,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773248770] [2020-10-05 23:11:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:36,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773248770] [2020-10-05 23:11:36,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698649181] [2020-10-05 23:11:36,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:37,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-05 23:11:37,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:37,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:37,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:37,177 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:11:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:37,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:37,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:37,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629189494] [2020-10-05 23:11:37,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:37,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:37,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:37,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:37,193 INFO L87 Difference]: Start difference. First operand 154 states and 386 transitions. Second operand 17 states. [2020-10-05 23:11:37,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:37,445 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-05 23:11:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:11:37,446 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 23:11:37,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:37,446 INFO L225 Difference]: With dead ends: 202 [2020-10-05 23:11:37,446 INFO L226 Difference]: Without dead ends: 196 [2020-10-05 23:11:37,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:11:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-05 23:11:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 151. [2020-10-05 23:11:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-05 23:11:37,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 382 transitions. [2020-10-05 23:11:37,451 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 382 transitions. Word has length 13 [2020-10-05 23:11:37,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:37,451 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 382 transitions. [2020-10-05 23:11:37,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 382 transitions. [2020-10-05 23:11:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:37,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:37,452 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:37,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-05 23:11:37,653 INFO L427 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:37,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:37,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2094057644, now seen corresponding path program 113 times [2020-10-05 23:11:37,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:37,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46528115] [2020-10-05 23:11:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:37,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46528115] [2020-10-05 23:11:37,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186834712] [2020-10-05 23:11:37,772 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:37,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:11:37,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:37,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:37,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:38,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:38,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:38,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259096158] [2020-10-05 23:11:38,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:38,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:38,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:38,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:38,004 INFO L87 Difference]: Start difference. First operand 151 states and 382 transitions. Second operand 17 states. [2020-10-05 23:11:38,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:38,060 INFO L93 Difference]: Finished difference Result 188 states and 456 transitions. [2020-10-05 23:11:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:11:38,060 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:38,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:38,061 INFO L225 Difference]: With dead ends: 188 [2020-10-05 23:11:38,061 INFO L226 Difference]: Without dead ends: 186 [2020-10-05 23:11:38,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:38,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-05 23:11:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 159. [2020-10-05 23:11:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-05 23:11:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 406 transitions. [2020-10-05 23:11:38,064 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 406 transitions. Word has length 14 [2020-10-05 23:11:38,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:38,064 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 406 transitions. [2020-10-05 23:11:38,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:38,064 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 406 transitions. [2020-10-05 23:11:38,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:38,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:38,064 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:38,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-05 23:11:38,265 INFO L427 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:38,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:38,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2094058605, now seen corresponding path program 114 times [2020-10-05 23:11:38,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:38,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857792011] [2020-10-05 23:11:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:38,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857792011] [2020-10-05 23:11:38,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967082994] [2020-10-05 23:11:38,387 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:38,427 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:11:38,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:38,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:38,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:38,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:38,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:38,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422782626] [2020-10-05 23:11:38,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:38,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:38,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:38,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:38,615 INFO L87 Difference]: Start difference. First operand 159 states and 406 transitions. Second operand 17 states. [2020-10-05 23:11:38,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:38,843 INFO L93 Difference]: Finished difference Result 199 states and 478 transitions. [2020-10-05 23:11:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:11:38,844 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:38,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:38,844 INFO L225 Difference]: With dead ends: 199 [2020-10-05 23:11:38,844 INFO L226 Difference]: Without dead ends: 197 [2020-10-05 23:11:38,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:11:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-05 23:11:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 157. [2020-10-05 23:11:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-05 23:11:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-05 23:11:38,847 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-05 23:11:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:38,848 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-05 23:11:38,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-05 23:11:38,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:38,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:38,848 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:39,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-05 23:11:39,049 INFO L427 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:39,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:39,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2094087435, now seen corresponding path program 115 times [2020-10-05 23:11:39,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:39,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316747142] [2020-10-05 23:11:39,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:39,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316747142] [2020-10-05 23:11:39,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572684250] [2020-10-05 23:11:39,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:39,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:39,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:39,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:39,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:39,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45597403] [2020-10-05 23:11:39,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:39,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:39,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:39,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:39,447 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-05 23:11:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:39,752 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-05 23:11:39,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:11:39,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:39,753 INFO L225 Difference]: With dead ends: 210 [2020-10-05 23:11:39,753 INFO L226 Difference]: Without dead ends: 208 [2020-10-05 23:11:39,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:11:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-05 23:11:39,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 155. [2020-10-05 23:11:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-05 23:11:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 394 transitions. [2020-10-05 23:11:39,755 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 394 transitions. Word has length 14 [2020-10-05 23:11:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:39,756 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 394 transitions. [2020-10-05 23:11:39,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 394 transitions. [2020-10-05 23:11:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:39,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:39,756 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:39,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-05 23:11:39,957 INFO L427 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:39,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:39,957 INFO L82 PathProgramCache]: Analyzing trace with hash 2094981165, now seen corresponding path program 116 times [2020-10-05 23:11:39,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:39,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900775933] [2020-10-05 23:11:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:40,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900775933] [2020-10-05 23:11:40,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920574348] [2020-10-05 23:11:40,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:40,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:40,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:40,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:40,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:40,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:40,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:40,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414038604] [2020-10-05 23:11:40,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:40,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:40,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:40,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:40,339 INFO L87 Difference]: Start difference. First operand 155 states and 394 transitions. Second operand 17 states. [2020-10-05 23:11:40,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:40,672 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-05 23:11:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:11:40,673 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:40,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:40,674 INFO L225 Difference]: With dead ends: 210 [2020-10-05 23:11:40,674 INFO L226 Difference]: Without dead ends: 208 [2020-10-05 23:11:40,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:11:40,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-05 23:11:40,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 157. [2020-10-05 23:11:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-05 23:11:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-05 23:11:40,678 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-05 23:11:40,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:40,679 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-05 23:11:40,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-05 23:11:40,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:40,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:40,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:40,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-10-05 23:11:40,884 INFO L427 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:40,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:40,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2094982126, now seen corresponding path program 117 times [2020-10-05 23:11:40,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:40,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032632631] [2020-10-05 23:11:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:40,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032632631] [2020-10-05 23:11:40,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377644438] [2020-10-05 23:11:40,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:41,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 23:11:41,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:41,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:41,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:44,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:44,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:44,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946401419] [2020-10-05 23:11:44,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:44,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:44,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:44,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2020-10-05 23:11:44,100 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-05 23:11:48,301 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-05 23:11:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:48,586 INFO L93 Difference]: Finished difference Result 218 states and 517 transitions. [2020-10-05 23:11:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:11:48,587 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:48,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:48,587 INFO L225 Difference]: With dead ends: 218 [2020-10-05 23:11:48,588 INFO L226 Difference]: Without dead ends: 216 [2020-10-05 23:11:48,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=183, Invalid=368, Unknown=1, NotChecked=0, Total=552 [2020-10-05 23:11:48,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-05 23:11:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156. [2020-10-05 23:11:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-05 23:11:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-05 23:11:48,591 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-05 23:11:48,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:48,592 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-05 23:11:48,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-05 23:11:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:48,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:48,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:48,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:48,793 INFO L427 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:48,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2095010956, now seen corresponding path program 118 times [2020-10-05 23:11:48,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:48,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787774936] [2020-10-05 23:11:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:48,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787774936] [2020-10-05 23:11:48,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40703414] [2020-10-05 23:11:48,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:48,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:48,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:48,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:48,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:49,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:49,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:49,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194710208] [2020-10-05 23:11:49,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:49,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:49,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:49,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:49,949 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-05 23:11:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:50,331 INFO L93 Difference]: Finished difference Result 212 states and 507 transitions. [2020-10-05 23:11:50,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:11:50,332 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:50,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:50,333 INFO L225 Difference]: With dead ends: 212 [2020-10-05 23:11:50,333 INFO L226 Difference]: Without dead ends: 210 [2020-10-05 23:11:50,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:11:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-05 23:11:50,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 153. [2020-10-05 23:11:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-05 23:11:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 388 transitions. [2020-10-05 23:11:50,338 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 388 transitions. Word has length 14 [2020-10-05 23:11:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:50,338 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 388 transitions. [2020-10-05 23:11:50,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 388 transitions. [2020-10-05 23:11:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:50,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:50,339 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:50,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:50,540 INFO L427 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:50,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:50,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2122686795, now seen corresponding path program 119 times [2020-10-05 23:11:50,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:50,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656390437] [2020-10-05 23:11:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:50,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656390437] [2020-10-05 23:11:50,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255991729] [2020-10-05 23:11:50,651 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:50,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:11:50,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:50,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:50,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:50,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:50,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:50,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216478836] [2020-10-05 23:11:50,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:50,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:50,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:50,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:50,871 INFO L87 Difference]: Start difference. First operand 153 states and 388 transitions. Second operand 17 states. [2020-10-05 23:11:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:51,213 INFO L93 Difference]: Finished difference Result 212 states and 504 transitions. [2020-10-05 23:11:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:11:51,214 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:51,215 INFO L225 Difference]: With dead ends: 212 [2020-10-05 23:11:51,215 INFO L226 Difference]: Without dead ends: 210 [2020-10-05 23:11:51,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:11:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-05 23:11:51,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 156. [2020-10-05 23:11:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-05 23:11:51,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-05 23:11:51,218 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-05 23:11:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:51,219 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-05 23:11:51,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-05 23:11:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:51,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:51,219 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:51,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:51,420 INFO L427 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:51,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:51,421 INFO L82 PathProgramCache]: Analyzing trace with hash 2122687756, now seen corresponding path program 120 times [2020-10-05 23:11:51,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:51,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281303987] [2020-10-05 23:11:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:51,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281303987] [2020-10-05 23:11:51,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255319121] [2020-10-05 23:11:51,533 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:51,600 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:11:51,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:51,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:51,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:51,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:51,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:51,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70015389] [2020-10-05 23:11:51,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:51,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:51,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:51,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:51,866 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-05 23:11:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:52,266 INFO L93 Difference]: Finished difference Result 224 states and 529 transitions. [2020-10-05 23:11:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:11:52,267 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:52,268 INFO L225 Difference]: With dead ends: 224 [2020-10-05 23:11:52,268 INFO L226 Difference]: Without dead ends: 222 [2020-10-05 23:11:52,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:11:52,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-05 23:11:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 156. [2020-10-05 23:11:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-05 23:11:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-05 23:11:52,272 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-05 23:11:52,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:52,272 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-05 23:11:52,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:52,272 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-05 23:11:52,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:52,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:52,273 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:52,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:52,482 INFO L427 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:52,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:52,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2122716586, now seen corresponding path program 121 times [2020-10-05 23:11:52,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:52,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84198797] [2020-10-05 23:11:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:52,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84198797] [2020-10-05 23:11:52,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417228362] [2020-10-05 23:11:52,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:52,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:52,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:52,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:52,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:52,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171127346] [2020-10-05 23:11:52,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:52,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:52,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:52,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:52,832 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-05 23:11:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:53,164 INFO L93 Difference]: Finished difference Result 218 states and 519 transitions. [2020-10-05 23:11:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:11:53,164 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:53,165 INFO L225 Difference]: With dead ends: 218 [2020-10-05 23:11:53,165 INFO L226 Difference]: Without dead ends: 216 [2020-10-05 23:11:53,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:11:53,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-05 23:11:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156. [2020-10-05 23:11:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-05 23:11:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-05 23:11:53,168 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-05 23:11:53,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:53,168 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-05 23:11:53,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-05 23:11:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:53,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:53,169 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:53,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:53,369 INFO L427 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:53,370 INFO L82 PathProgramCache]: Analyzing trace with hash 2123641068, now seen corresponding path program 122 times [2020-10-05 23:11:53,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:53,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265194839] [2020-10-05 23:11:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:53,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265194839] [2020-10-05 23:11:53,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624053598] [2020-10-05 23:11:53,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:53,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:53,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:53,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:53,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:53,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:53,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:53,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522991774] [2020-10-05 23:11:53,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:53,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:53,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:53,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:53,691 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-05 23:11:53,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:53,975 INFO L93 Difference]: Finished difference Result 206 states and 492 transitions. [2020-10-05 23:11:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:11:53,975 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:53,976 INFO L225 Difference]: With dead ends: 206 [2020-10-05 23:11:53,976 INFO L226 Difference]: Without dead ends: 204 [2020-10-05 23:11:53,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:11:53,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-05 23:11:53,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 154. [2020-10-05 23:11:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-05 23:11:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-05 23:11:53,979 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-05 23:11:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:53,980 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-05 23:11:53,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-05 23:11:53,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:53,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:53,980 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:54,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-10-05 23:11:54,181 INFO L427 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:54,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:54,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405971, now seen corresponding path program 123 times [2020-10-05 23:11:54,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:54,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478752207] [2020-10-05 23:11:54,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:54,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478752207] [2020-10-05 23:11:54,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028655447] [2020-10-05 23:11:54,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:54,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-05 23:11:54,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:54,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:54,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:54,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:54,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:54,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774862434] [2020-10-05 23:11:54,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:54,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:54,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:54,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:54,517 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 17 states. [2020-10-05 23:11:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:54,797 INFO L93 Difference]: Finished difference Result 207 states and 495 transitions. [2020-10-05 23:11:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:11:54,798 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:54,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:54,799 INFO L225 Difference]: With dead ends: 207 [2020-10-05 23:11:54,799 INFO L226 Difference]: Without dead ends: 205 [2020-10-05 23:11:54,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:11:54,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-05 23:11:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 159. [2020-10-05 23:11:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-05 23:11:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 403 transitions. [2020-10-05 23:11:54,802 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 403 transitions. Word has length 14 [2020-10-05 23:11:54,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:54,802 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 403 transitions. [2020-10-05 23:11:54,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 403 transitions. [2020-10-05 23:11:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:54,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:54,803 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:55,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-05 23:11:55,004 INFO L427 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:55,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:55,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405010, now seen corresponding path program 124 times [2020-10-05 23:11:55,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:55,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788225068] [2020-10-05 23:11:55,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:55,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788225068] [2020-10-05 23:11:55,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681226947] [2020-10-05 23:11:55,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:55,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:11:55,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:55,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:55,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:55,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:55,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:55,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940824092] [2020-10-05 23:11:55,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:55,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:55,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:55,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:55,360 INFO L87 Difference]: Start difference. First operand 159 states and 403 transitions. Second operand 17 states. [2020-10-05 23:11:55,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:55,667 INFO L93 Difference]: Finished difference Result 217 states and 516 transitions. [2020-10-05 23:11:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:11:55,668 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:55,669 INFO L225 Difference]: With dead ends: 217 [2020-10-05 23:11:55,669 INFO L226 Difference]: Without dead ends: 215 [2020-10-05 23:11:55,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:11:55,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-05 23:11:55,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 158. [2020-10-05 23:11:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-05 23:11:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 400 transitions. [2020-10-05 23:11:55,674 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 400 transitions. Word has length 14 [2020-10-05 23:11:55,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:55,674 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 400 transitions. [2020-10-05 23:11:55,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 400 transitions. [2020-10-05 23:11:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:55,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:55,675 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:55,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-05 23:11:55,885 INFO L427 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:55,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1313376180, now seen corresponding path program 125 times [2020-10-05 23:11:55,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:55,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379333963] [2020-10-05 23:11:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:56,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379333963] [2020-10-05 23:11:56,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866123867] [2020-10-05 23:11:56,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:56,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:11:56,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:56,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:56,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:56,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:56,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:56,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498812658] [2020-10-05 23:11:56,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:56,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:56,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:56,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:56,338 INFO L87 Difference]: Start difference. First operand 158 states and 400 transitions. Second operand 17 states. [2020-10-05 23:11:56,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:56,752 INFO L93 Difference]: Finished difference Result 223 states and 528 transitions. [2020-10-05 23:11:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:11:56,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:56,753 INFO L225 Difference]: With dead ends: 223 [2020-10-05 23:11:56,753 INFO L226 Difference]: Without dead ends: 221 [2020-10-05 23:11:56,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:11:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-05 23:11:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 162. [2020-10-05 23:11:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-05 23:11:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 411 transitions. [2020-10-05 23:11:56,757 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 411 transitions. Word has length 14 [2020-10-05 23:11:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:56,758 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 411 transitions. [2020-10-05 23:11:56,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 411 transitions. [2020-10-05 23:11:56,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:56,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:56,759 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:56,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-05 23:11:56,962 INFO L427 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:56,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:56,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1312481489, now seen corresponding path program 126 times [2020-10-05 23:11:56,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:56,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310387983] [2020-10-05 23:11:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:57,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310387983] [2020-10-05 23:11:57,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026260415] [2020-10-05 23:11:57,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:57,128 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:11:57,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:57,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:57,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:57,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:57,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:57,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159814324] [2020-10-05 23:11:57,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:57,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:57,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:57,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:57,310 INFO L87 Difference]: Start difference. First operand 162 states and 411 transitions. Second operand 17 states. [2020-10-05 23:11:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:57,630 INFO L93 Difference]: Finished difference Result 225 states and 531 transitions. [2020-10-05 23:11:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:11:57,630 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:57,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:57,631 INFO L225 Difference]: With dead ends: 225 [2020-10-05 23:11:57,631 INFO L226 Difference]: Without dead ends: 223 [2020-10-05 23:11:57,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:11:57,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-05 23:11:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 161. [2020-10-05 23:11:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-05 23:11:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 407 transitions. [2020-10-05 23:11:57,634 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 407 transitions. Word has length 14 [2020-10-05 23:11:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:57,634 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 407 transitions. [2020-10-05 23:11:57,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 407 transitions. [2020-10-05 23:11:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:57,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:57,635 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:57,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:57,835 INFO L427 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:57,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:57,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1284776820, now seen corresponding path program 127 times [2020-10-05 23:11:57,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:57,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246086124] [2020-10-05 23:11:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:57,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246086124] [2020-10-05 23:11:57,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184838933] [2020-10-05 23:11:57,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:58,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:58,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:58,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:58,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:58,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974042643] [2020-10-05 23:11:58,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:58,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:58,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:58,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:58,227 INFO L87 Difference]: Start difference. First operand 161 states and 407 transitions. Second operand 17 states. [2020-10-05 23:11:58,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:58,546 INFO L93 Difference]: Finished difference Result 214 states and 509 transitions. [2020-10-05 23:11:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:11:58,547 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:58,547 INFO L225 Difference]: With dead ends: 214 [2020-10-05 23:11:58,548 INFO L226 Difference]: Without dead ends: 212 [2020-10-05 23:11:58,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:11:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-05 23:11:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 160. [2020-10-05 23:11:58,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-05 23:11:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 404 transitions. [2020-10-05 23:11:58,551 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 404 transitions. Word has length 14 [2020-10-05 23:11:58,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:58,551 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 404 transitions. [2020-10-05 23:11:58,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 404 transitions. [2020-10-05 23:11:58,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:58,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:58,552 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:58,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:58,752 INFO L427 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:58,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:58,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1283823508, now seen corresponding path program 128 times [2020-10-05 23:11:58,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:58,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748351590] [2020-10-05 23:11:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:58,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748351590] [2020-10-05 23:11:58,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832800932] [2020-10-05 23:11:58,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:58,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:11:58,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:58,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:58,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:11:59,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:59,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:11:59,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:11:59,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831289793] [2020-10-05 23:11:59,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:11:59,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:11:59,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:11:59,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:11:59,156 INFO L87 Difference]: Start difference. First operand 160 states and 404 transitions. Second operand 17 states. [2020-10-05 23:11:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:11:59,379 INFO L93 Difference]: Finished difference Result 203 states and 486 transitions. [2020-10-05 23:11:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:11:59,380 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:11:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:11:59,381 INFO L225 Difference]: With dead ends: 203 [2020-10-05 23:11:59,381 INFO L226 Difference]: Without dead ends: 201 [2020-10-05 23:11:59,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:11:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-05 23:11:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 158. [2020-10-05 23:11:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-05 23:11:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 397 transitions. [2020-10-05 23:11:59,390 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 397 transitions. Word has length 14 [2020-10-05 23:11:59,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:11:59,390 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 397 transitions. [2020-10-05 23:11:59,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:11:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 397 transitions. [2020-10-05 23:11:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:11:59,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:11:59,391 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:11:59,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-05 23:11:59,592 INFO L427 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:11:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:11:59,592 INFO L82 PathProgramCache]: Analyzing trace with hash 291274206, now seen corresponding path program 129 times [2020-10-05 23:11:59,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:11:59,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185089194] [2020-10-05 23:11:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:11:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:11:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:11:59,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185089194] [2020-10-05 23:11:59,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298874820] [2020-10-05 23:11:59,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:11:59,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:11:59,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:11:59,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:11:59,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:12:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:00,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:12:00,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:12:00,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487691023] [2020-10-05 23:12:00,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:12:00,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:00,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:12:00,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:12:00,014 INFO L87 Difference]: Start difference. First operand 158 states and 397 transitions. Second operand 17 states. [2020-10-05 23:12:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:00,096 INFO L93 Difference]: Finished difference Result 212 states and 504 transitions. [2020-10-05 23:12:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:12:00,097 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:12:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:00,098 INFO L225 Difference]: With dead ends: 212 [2020-10-05 23:12:00,098 INFO L226 Difference]: Without dead ends: 210 [2020-10-05 23:12:00,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:12:00,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-05 23:12:00,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 166. [2020-10-05 23:12:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-05 23:12:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 421 transitions. [2020-10-05 23:12:00,102 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 421 transitions. Word has length 14 [2020-10-05 23:12:00,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:00,102 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 421 transitions. [2020-10-05 23:12:00,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:12:00,102 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 421 transitions. [2020-10-05 23:12:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:12:00,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:00,102 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:00,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:00,303 INFO L427 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:00,303 INFO L82 PathProgramCache]: Analyzing trace with hash 291275167, now seen corresponding path program 130 times [2020-10-05 23:12:00,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:00,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002083804] [2020-10-05 23:12:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:00,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002083804] [2020-10-05 23:12:00,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206927122] [2020-10-05 23:12:00,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:00,533 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:12:00,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:12:00,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:12:00,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:12:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:00,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:12:00,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:12:00,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867309275] [2020-10-05 23:12:00,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:12:00,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:00,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:12:00,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:12:00,739 INFO L87 Difference]: Start difference. First operand 166 states and 421 transitions. Second operand 17 states. [2020-10-05 23:12:01,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:01,008 INFO L93 Difference]: Finished difference Result 217 states and 513 transitions. [2020-10-05 23:12:01,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:12:01,012 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:12:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:01,012 INFO L225 Difference]: With dead ends: 217 [2020-10-05 23:12:01,013 INFO L226 Difference]: Without dead ends: 215 [2020-10-05 23:12:01,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:12:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-05 23:12:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 164. [2020-10-05 23:12:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-05 23:12:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions. [2020-10-05 23:12:01,017 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14 [2020-10-05 23:12:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:01,017 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 415 transitions. [2020-10-05 23:12:01,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:12:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions. [2020-10-05 23:12:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:12:01,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:01,018 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:01,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:01,226 INFO L427 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:01,227 INFO L82 PathProgramCache]: Analyzing trace with hash 291303997, now seen corresponding path program 131 times [2020-10-05 23:12:01,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:01,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514166522] [2020-10-05 23:12:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:01,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514166522] [2020-10-05 23:12:01,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487856799] [2020-10-05 23:12:01,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:01,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 23:12:01,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:12:01,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:12:01,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:12:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:02,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:12:02,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:12:02,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51749559] [2020-10-05 23:12:02,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:12:02,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:02,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:12:02,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:12:02,525 INFO L87 Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states. [2020-10-05 23:12:02,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:02,859 INFO L93 Difference]: Finished difference Result 227 states and 533 transitions. [2020-10-05 23:12:02,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:12:02,861 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:12:02,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:02,861 INFO L225 Difference]: With dead ends: 227 [2020-10-05 23:12:02,862 INFO L226 Difference]: Without dead ends: 225 [2020-10-05 23:12:02,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-05 23:12:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-05 23:12:02,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 162. [2020-10-05 23:12:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-05 23:12:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 409 transitions. [2020-10-05 23:12:02,871 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 409 transitions. Word has length 14 [2020-10-05 23:12:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:02,871 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 409 transitions. [2020-10-05 23:12:02,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:12:02,871 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 409 transitions. [2020-10-05 23:12:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:12:02,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:02,871 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:03,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:03,072 INFO L427 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:03,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:03,073 INFO L82 PathProgramCache]: Analyzing trace with hash 292197727, now seen corresponding path program 132 times [2020-10-05 23:12:03,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:03,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131892581] [2020-10-05 23:12:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:03,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131892581] [2020-10-05 23:12:03,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852121494] [2020-10-05 23:12:03,210 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:03,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 23:12:03,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:12:03,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:12:03,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:12:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:03,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:12:03,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:12:03,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799847413] [2020-10-05 23:12:03,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:12:03,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:03,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:12:03,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:12:03,482 INFO L87 Difference]: Start difference. First operand 162 states and 409 transitions. Second operand 17 states. [2020-10-05 23:12:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:12:03,897 INFO L93 Difference]: Finished difference Result 227 states and 533 transitions. [2020-10-05 23:12:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:12:03,897 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 23:12:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:12:03,898 INFO L225 Difference]: With dead ends: 227 [2020-10-05 23:12:03,898 INFO L226 Difference]: Without dead ends: 225 [2020-10-05 23:12:03,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:12:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-05 23:12:03,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 164. [2020-10-05 23:12:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-05 23:12:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions. [2020-10-05 23:12:03,901 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14 [2020-10-05 23:12:03,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:12:03,902 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 415 transitions. [2020-10-05 23:12:03,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:12:03,902 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions. [2020-10-05 23:12:03,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 23:12:03,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:12:03,902 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:12:04,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-05 23:12:04,104 INFO L427 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:12:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:12:04,105 INFO L82 PathProgramCache]: Analyzing trace with hash 292198688, now seen corresponding path program 133 times [2020-10-05 23:12:04,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:12:04,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247134748] [2020-10-05 23:12:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:12:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:04,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:04,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247134748] [2020-10-05 23:12:04,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763964313] [2020-10-05 23:12:04,243 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:12:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:12:04,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:12:04,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:12:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:12:08,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:12:08,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 23:12:08,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442434686] [2020-10-05 23:12:08,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:12:08,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:12:08,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:12:08,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2020-10-05 23:12:08,250 INFO L87 Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states. Received shutdown request... [2020-10-05 23:12:12,490 WARN L210 SmtUtils]: Removed 3 from assertion stack [2020-10-05 23:12:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 23:12:12,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-05 23:12:12,692 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-05 23:12:12,696 WARN L228 ceAbstractionStarter]: Timeout [2020-10-05 23:12:12,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:12:12 BasicIcfg [2020-10-05 23:12:12,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:12:12,698 INFO L168 Benchmark]: Toolchain (without parser) took 279087.37 ms. Allocated memory was 139.5 MB in the beginning and 234.9 MB in the end (delta: 95.4 MB). Free memory was 101.6 MB in the beginning and 132.6 MB in the end (delta: -31.0 MB). Peak memory consumption was 64.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:12,698 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-05 23:12:12,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.32 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 159.3 MB in the end (delta: -57.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:12,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.31 ms. Allocated memory is still 201.9 MB. Free memory was 159.3 MB in the beginning and 157.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:12,699 INFO L168 Benchmark]: Boogie Preprocessor took 26.97 ms. Allocated memory is still 201.9 MB. Free memory was 157.3 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:12,699 INFO L168 Benchmark]: RCFGBuilder took 363.81 ms. Allocated memory is still 201.9 MB. Free memory was 155.4 MB in the beginning and 135.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:12,699 INFO L168 Benchmark]: TraceAbstraction took 277988.19 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 134.1 MB in the beginning and 132.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2020-10-05 23:12:12,701 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 656.32 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.6 MB in the beginning and 159.3 MB in the end (delta: -57.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.31 ms. Allocated memory is still 201.9 MB. Free memory was 159.3 MB in the beginning and 157.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.97 ms. Allocated memory is still 201.9 MB. Free memory was 157.3 MB in the beginning and 155.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 363.81 ms. Allocated memory is still 201.9 MB. Free memory was 155.4 MB in the beginning and 135.1 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 277988.19 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 134.1 MB in the beginning and 132.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 59 ProgramPointsBefore, 20 ProgramPointsAfterwards, 57 TransitionsBefore, 16 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 553 VarBasedMoverChecksPositive, 10 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 879 CheckedPairsTotal, 48 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 711). Cancelled while BasicCegarLoop was constructing difference of abstraction (164states) and FLOYD_HOARE automaton (currently 7 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 41 for 4098ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 277.8s, OverallIterations: 167, TraceHistogramMax: 6, AutomataDifference: 183.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 2183 SDtfs, 14682 SDslu, 14548 SDs, 0 SdLazy, 10340 SolverSat, 3484 SolverUnsat, 44 SolverUnknown, 0 SolverNotchecked, 89.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4067 GetRequests, 785 SyntacticMatches, 140 SemanticMatches, 3141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15670 ImplicationChecksByTransitivity, 130.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=163, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 166 MinimizatonAttempts, 7357 StatesRemovedByMinimization, 166 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 50.6s InterpolantComputationTime, 4026 NumberOfCodeBlocks, 4026 NumberOfCodeBlocksAsserted, 504 NumberOfCheckSat, 3700 ConstructedInterpolants, 7 QuantifiedInterpolants, 378332 SizeOfPredicates, 159 NumberOfNonLiveVariables, 13676 ConjunctsInSsa, 1537 ConjunctsInUnsatCore, 326 InterpolantComputations, 8 PerfectInterpolantSequences, 0/1512 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown