/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 03:18:00,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 03:18:00,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 03:18:00,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 03:18:00,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 03:18:00,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 03:18:00,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 03:18:00,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 03:18:00,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 03:18:00,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 03:18:00,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 03:18:00,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 03:18:00,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 03:18:00,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 03:18:00,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 03:18:00,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 03:18:00,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 03:18:00,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 03:18:00,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 03:18:00,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 03:18:00,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 03:18:00,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 03:18:00,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 03:18:00,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 03:18:00,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 03:18:00,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 03:18:00,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 03:18:00,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 03:18:00,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 03:18:00,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 03:18:00,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 03:18:00,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 03:18:00,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 03:18:00,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 03:18:00,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 03:18:00,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 03:18:00,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 03:18:00,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 03:18:00,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 03:18:00,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 03:18:00,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 03:18:00,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-04-18 03:18:00,262 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 03:18:00,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 03:18:00,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 03:18:00,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 03:18:00,263 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 03:18:00,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 03:18:00,264 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 03:18:00,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 03:18:00,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 03:18:00,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 03:18:00,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 03:18:00,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 03:18:00,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 03:18:00,265 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 03:18:00,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 03:18:00,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 03:18:00,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 03:18:00,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 03:18:00,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 03:18:00,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 03:18:00,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 03:18:00,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 03:18:00,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 03:18:00,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 03:18:00,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 03:18:00,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 03:18:00,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 03:18:00,268 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 03:18:00,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 03:18:00,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 03:18:00,552 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 03:18:00,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 03:18:00,568 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 03:18:00,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 03:18:00,570 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 03:18:00,571 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2020-04-18 03:18:00,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e9ad34b9/c79d303a21444ac5b6ff650f9689adac/FLAGcaba793de [2020-04-18 03:18:01,220 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 03:18:01,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2020-04-18 03:18:01,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e9ad34b9/c79d303a21444ac5b6ff650f9689adac/FLAGcaba793de [2020-04-18 03:18:01,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e9ad34b9/c79d303a21444ac5b6ff650f9689adac [2020-04-18 03:18:01,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 03:18:01,558 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 03:18:01,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 03:18:01,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 03:18:01,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 03:18:01,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:18:01" (1/1) ... [2020-04-18 03:18:01,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7d71eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:01, skipping insertion in model container [2020-04-18 03:18:01,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:18:01" (1/1) ... [2020-04-18 03:18:01,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 03:18:01,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 03:18:02,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:18:02,096 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 03:18:02,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 03:18:02,231 INFO L208 MainTranslator]: Completed translation [2020-04-18 03:18:02,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02 WrapperNode [2020-04-18 03:18:02,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 03:18:02,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 03:18:02,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 03:18:02,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 03:18:02,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02" (1/1) ... [2020-04-18 03:18:02,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02" (1/1) ... [2020-04-18 03:18:02,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 03:18:02,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 03:18:02,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 03:18:02,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 03:18:02,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02" (1/1) ... [2020-04-18 03:18:02,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02" (1/1) ... [2020-04-18 03:18:02,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02" (1/1) ... [2020-04-18 03:18:02,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02" (1/1) ... [2020-04-18 03:18:02,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02" (1/1) ... [2020-04-18 03:18:02,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02" (1/1) ... [2020-04-18 03:18:02,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02" (1/1) ... [2020-04-18 03:18:02,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 03:18:02,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 03:18:02,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 03:18:02,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 03:18:02,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02" (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 [2020-04-18 03:18:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-04-18 03:18:02,361 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-04-18 03:18:02,361 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-04-18 03:18:02,362 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-04-18 03:18:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 03:18:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 03:18:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 03:18:02,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 03:18:02,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 03:18:02,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 03:18:02,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 03:18:02,365 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 03:18:02,727 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 03:18:02,727 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-04-18 03:18:02,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:18:02 BoogieIcfgContainer [2020-04-18 03:18:02,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 03:18:02,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 03:18:02,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 03:18:02,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 03:18:02,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:18:01" (1/3) ... [2020-04-18 03:18:02,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92746bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:18:02, skipping insertion in model container [2020-04-18 03:18:02,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:18:02" (2/3) ... [2020-04-18 03:18:02,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92746bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:18:02, skipping insertion in model container [2020-04-18 03:18:02,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:18:02" (3/3) ... [2020-04-18 03:18:02,741 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2020-04-18 03:18:02,751 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 03:18:02,751 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 03:18:02,758 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 03:18:02,759 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 03:18:02,783 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,783 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,783 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,784 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,784 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,785 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,785 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,785 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,786 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,786 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,786 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,786 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,787 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,787 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,788 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,788 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,788 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,788 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,789 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,789 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,789 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,789 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,790 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,790 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,790 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,791 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,791 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,791 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,795 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,795 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,796 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,796 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,796 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,796 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,802 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,803 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,803 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,803 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,803 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,804 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 03:18:02,826 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 03:18:02,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 03:18:02,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 03:18:02,847 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 03:18:02,847 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 03:18:02,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 03:18:02,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 03:18:02,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 03:18:02,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 03:18:02,860 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 55 transitions, 120 flow [2020-04-18 03:18:02,947 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1444 states. [2020-04-18 03:18:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states. [2020-04-18 03:18:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-04-18 03:18:02,961 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:02,962 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:02,963 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:02,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:02,969 INFO L82 PathProgramCache]: Analyzing trace with hash 305903693, now seen corresponding path program 1 times [2020-04-18 03:18:02,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:02,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556171203] [2020-04-18 03:18:02,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:03,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556171203] [2020-04-18 03:18:03,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:03,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 03:18:03,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551579547] [2020-04-18 03:18:03,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 03:18:03,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:03,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 03:18:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 03:18:03,478 INFO L87 Difference]: Start difference. First operand 1444 states. Second operand 6 states. [2020-04-18 03:18:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:03,790 INFO L93 Difference]: Finished difference Result 3231 states and 9379 transitions. [2020-04-18 03:18:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 03:18:03,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-04-18 03:18:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:03,832 INFO L225 Difference]: With dead ends: 3231 [2020-04-18 03:18:03,833 INFO L226 Difference]: Without dead ends: 1015 [2020-04-18 03:18:03,836 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 03:18:03,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-04-18 03:18:03,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 755. [2020-04-18 03:18:03,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-04-18 03:18:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 2044 transitions. [2020-04-18 03:18:04,002 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 2044 transitions. Word has length 22 [2020-04-18 03:18:04,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:04,002 INFO L479 AbstractCegarLoop]: Abstraction has 755 states and 2044 transitions. [2020-04-18 03:18:04,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 03:18:04,003 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 2044 transitions. [2020-04-18 03:18:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 03:18:04,013 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:04,013 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:04,014 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:04,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:04,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1846891054, now seen corresponding path program 1 times [2020-04-18 03:18:04,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:04,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024627192] [2020-04-18 03:18:04,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:04,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024627192] [2020-04-18 03:18:04,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:04,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 03:18:04,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99574130] [2020-04-18 03:18:04,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 03:18:04,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:04,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 03:18:04,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 03:18:04,187 INFO L87 Difference]: Start difference. First operand 755 states and 2044 transitions. Second operand 6 states. [2020-04-18 03:18:04,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:04,370 INFO L93 Difference]: Finished difference Result 967 states and 2556 transitions. [2020-04-18 03:18:04,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 03:18:04,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-04-18 03:18:04,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:04,379 INFO L225 Difference]: With dead ends: 967 [2020-04-18 03:18:04,379 INFO L226 Difference]: Without dead ends: 751 [2020-04-18 03:18:04,380 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:18:04,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2020-04-18 03:18:04,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 644. [2020-04-18 03:18:04,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-04-18 03:18:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1754 transitions. [2020-04-18 03:18:04,408 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1754 transitions. Word has length 26 [2020-04-18 03:18:04,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:04,408 INFO L479 AbstractCegarLoop]: Abstraction has 644 states and 1754 transitions. [2020-04-18 03:18:04,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 03:18:04,408 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1754 transitions. [2020-04-18 03:18:04,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 03:18:04,409 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:04,410 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:04,410 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:04,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:04,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1106394582, now seen corresponding path program 1 times [2020-04-18 03:18:04,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:04,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141853353] [2020-04-18 03:18:04,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:04,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141853353] [2020-04-18 03:18:04,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:04,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 03:18:04,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729879838] [2020-04-18 03:18:04,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 03:18:04,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:04,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 03:18:04,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 03:18:04,565 INFO L87 Difference]: Start difference. First operand 644 states and 1754 transitions. Second operand 6 states. [2020-04-18 03:18:04,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:04,675 INFO L93 Difference]: Finished difference Result 1623 states and 4312 transitions. [2020-04-18 03:18:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 03:18:04,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-04-18 03:18:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:04,687 INFO L225 Difference]: With dead ends: 1623 [2020-04-18 03:18:04,687 INFO L226 Difference]: Without dead ends: 1367 [2020-04-18 03:18:04,688 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:18:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2020-04-18 03:18:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 818. [2020-04-18 03:18:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-04-18 03:18:04,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 2217 transitions. [2020-04-18 03:18:04,733 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 2217 transitions. Word has length 26 [2020-04-18 03:18:04,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:04,734 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 2217 transitions. [2020-04-18 03:18:04,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 03:18:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2217 transitions. [2020-04-18 03:18:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-04-18 03:18:04,737 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:04,737 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:04,737 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:04,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1917752336, now seen corresponding path program 2 times [2020-04-18 03:18:04,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:04,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899345967] [2020-04-18 03:18:04,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:04,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899345967] [2020-04-18 03:18:04,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:04,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 03:18:04,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98285772] [2020-04-18 03:18:04,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 03:18:04,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:04,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 03:18:04,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 03:18:04,953 INFO L87 Difference]: Start difference. First operand 818 states and 2217 transitions. Second operand 6 states. [2020-04-18 03:18:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:05,073 INFO L93 Difference]: Finished difference Result 1095 states and 2833 transitions. [2020-04-18 03:18:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 03:18:05,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-04-18 03:18:05,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:05,080 INFO L225 Difference]: With dead ends: 1095 [2020-04-18 03:18:05,080 INFO L226 Difference]: Without dead ends: 770 [2020-04-18 03:18:05,081 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 03:18:05,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-04-18 03:18:05,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 678. [2020-04-18 03:18:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-04-18 03:18:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1810 transitions. [2020-04-18 03:18:05,103 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1810 transitions. Word has length 26 [2020-04-18 03:18:05,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:05,103 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 1810 transitions. [2020-04-18 03:18:05,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 03:18:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1810 transitions. [2020-04-18 03:18:05,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 03:18:05,105 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:05,105 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:05,105 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:05,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:05,106 INFO L82 PathProgramCache]: Analyzing trace with hash -36338805, now seen corresponding path program 1 times [2020-04-18 03:18:05,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:05,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584057942] [2020-04-18 03:18:05,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:05,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584057942] [2020-04-18 03:18:05,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:05,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:18:05,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304953456] [2020-04-18 03:18:05,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:18:05,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:05,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:18:05,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:18:05,217 INFO L87 Difference]: Start difference. First operand 678 states and 1810 transitions. Second operand 7 states. [2020-04-18 03:18:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:05,364 INFO L93 Difference]: Finished difference Result 1850 states and 4858 transitions. [2020-04-18 03:18:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 03:18:05,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-04-18 03:18:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:05,376 INFO L225 Difference]: With dead ends: 1850 [2020-04-18 03:18:05,376 INFO L226 Difference]: Without dead ends: 1583 [2020-04-18 03:18:05,377 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:18:05,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-04-18 03:18:05,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 817. [2020-04-18 03:18:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2020-04-18 03:18:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2217 transitions. [2020-04-18 03:18:05,429 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2217 transitions. Word has length 30 [2020-04-18 03:18:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:05,429 INFO L479 AbstractCegarLoop]: Abstraction has 817 states and 2217 transitions. [2020-04-18 03:18:05,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:18:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2217 transitions. [2020-04-18 03:18:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 03:18:05,437 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:05,438 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:05,438 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:05,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:05,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1307159183, now seen corresponding path program 2 times [2020-04-18 03:18:05,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:05,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46161505] [2020-04-18 03:18:05,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:05,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46161505] [2020-04-18 03:18:05,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:05,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:18:05,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379063740] [2020-04-18 03:18:05,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:18:05,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:05,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:18:05,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:18:05,573 INFO L87 Difference]: Start difference. First operand 817 states and 2217 transitions. Second operand 7 states. [2020-04-18 03:18:05,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:05,744 INFO L93 Difference]: Finished difference Result 1145 states and 2985 transitions. [2020-04-18 03:18:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 03:18:05,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-04-18 03:18:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:05,750 INFO L225 Difference]: With dead ends: 1145 [2020-04-18 03:18:05,750 INFO L226 Difference]: Without dead ends: 809 [2020-04-18 03:18:05,751 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-04-18 03:18:05,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-04-18 03:18:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 690. [2020-04-18 03:18:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-04-18 03:18:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1833 transitions. [2020-04-18 03:18:05,797 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1833 transitions. Word has length 30 [2020-04-18 03:18:05,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:05,798 INFO L479 AbstractCegarLoop]: Abstraction has 690 states and 1833 transitions. [2020-04-18 03:18:05,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:18:05,798 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1833 transitions. [2020-04-18 03:18:05,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-04-18 03:18:05,799 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:05,799 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:05,800 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:05,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:05,800 INFO L82 PathProgramCache]: Analyzing trace with hash -366411313, now seen corresponding path program 3 times [2020-04-18 03:18:05,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:05,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84658497] [2020-04-18 03:18:05,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:05,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84658497] [2020-04-18 03:18:05,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 03:18:05,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 03:18:05,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474178827] [2020-04-18 03:18:05,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 03:18:05,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:05,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 03:18:05,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 03:18:05,950 INFO L87 Difference]: Start difference. First operand 690 states and 1833 transitions. Second operand 7 states. [2020-04-18 03:18:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:06,226 INFO L93 Difference]: Finished difference Result 1182 states and 3051 transitions. [2020-04-18 03:18:06,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 03:18:06,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-04-18 03:18:06,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:06,233 INFO L225 Difference]: With dead ends: 1182 [2020-04-18 03:18:06,234 INFO L226 Difference]: Without dead ends: 958 [2020-04-18 03:18:06,235 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 03:18:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-04-18 03:18:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 800. [2020-04-18 03:18:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2020-04-18 03:18:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2163 transitions. [2020-04-18 03:18:06,261 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2163 transitions. Word has length 30 [2020-04-18 03:18:06,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:06,262 INFO L479 AbstractCegarLoop]: Abstraction has 800 states and 2163 transitions. [2020-04-18 03:18:06,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 03:18:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2163 transitions. [2020-04-18 03:18:06,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 03:18:06,267 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:06,267 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:06,267 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:06,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:06,268 INFO L82 PathProgramCache]: Analyzing trace with hash 96701453, now seen corresponding path program 1 times [2020-04-18 03:18:06,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:06,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015821383] [2020-04-18 03:18:06,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:06,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015821383] [2020-04-18 03:18:06,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310554242] [2020-04-18 03:18:06,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-04-18 03:18:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:06,474 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:18:06,480 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:06,522 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:06,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:06,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:06,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-04-18 03:18:06,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503910076] [2020-04-18 03:18:06,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 03:18:06,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:06,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 03:18:06,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-04-18 03:18:06,553 INFO L87 Difference]: Start difference. First operand 800 states and 2163 transitions. Second operand 10 states. [2020-04-18 03:18:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:06,764 INFO L93 Difference]: Finished difference Result 1504 states and 4019 transitions. [2020-04-18 03:18:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 03:18:06,765 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-04-18 03:18:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:06,772 INFO L225 Difference]: With dead ends: 1504 [2020-04-18 03:18:06,772 INFO L226 Difference]: Without dead ends: 1080 [2020-04-18 03:18:06,773 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-04-18 03:18:06,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2020-04-18 03:18:06,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 878. [2020-04-18 03:18:06,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-04-18 03:18:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 2363 transitions. [2020-04-18 03:18:06,800 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 2363 transitions. Word has length 35 [2020-04-18 03:18:06,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:06,800 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 2363 transitions. [2020-04-18 03:18:06,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 03:18:06,801 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 2363 transitions. [2020-04-18 03:18:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 03:18:06,802 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:06,803 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:07,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:07,008 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:07,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:07,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1763598261, now seen corresponding path program 1 times [2020-04-18 03:18:07,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:07,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339293800] [2020-04-18 03:18:07,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 03:18:07,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339293800] [2020-04-18 03:18:07,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540005640] [2020-04-18 03:18:07,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-04-18 03:18:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:07,233 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-04-18 03:18:07,235 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:07,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 03:18:07,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:07,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-04-18 03:18:07,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329035131] [2020-04-18 03:18:07,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:18:07,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:07,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:18:07,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:18:07,269 INFO L87 Difference]: Start difference. First operand 878 states and 2363 transitions. Second operand 9 states. [2020-04-18 03:18:07,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:07,383 INFO L93 Difference]: Finished difference Result 1398 states and 3567 transitions. [2020-04-18 03:18:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 03:18:07,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-04-18 03:18:07,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:07,391 INFO L225 Difference]: With dead ends: 1398 [2020-04-18 03:18:07,391 INFO L226 Difference]: Without dead ends: 1113 [2020-04-18 03:18:07,392 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-04-18 03:18:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-04-18 03:18:07,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1008. [2020-04-18 03:18:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-04-18 03:18:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 2659 transitions. [2020-04-18 03:18:07,420 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 2659 transitions. Word has length 40 [2020-04-18 03:18:07,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:07,420 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 2659 transitions. [2020-04-18 03:18:07,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:18:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 2659 transitions. [2020-04-18 03:18:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 03:18:07,422 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:07,422 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:07,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:07,626 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:07,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:07,627 INFO L82 PathProgramCache]: Analyzing trace with hash -957998823, now seen corresponding path program 2 times [2020-04-18 03:18:07,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:07,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834596322] [2020-04-18 03:18:07,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 03:18:07,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834596322] [2020-04-18 03:18:07,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465830475] [2020-04-18 03:18:07,767 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 03:18:07,838 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:18:07,838 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:07,840 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-18 03:18:07,844 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:07,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 03:18:07,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:07,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-04-18 03:18:07,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191656514] [2020-04-18 03:18:07,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 03:18:07,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:07,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 03:18:07,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-04-18 03:18:07,904 INFO L87 Difference]: Start difference. First operand 1008 states and 2659 transitions. Second operand 10 states. [2020-04-18 03:18:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:08,250 INFO L93 Difference]: Finished difference Result 2170 states and 5670 transitions. [2020-04-18 03:18:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 03:18:08,250 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-04-18 03:18:08,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:08,259 INFO L225 Difference]: With dead ends: 2170 [2020-04-18 03:18:08,260 INFO L226 Difference]: Without dead ends: 1583 [2020-04-18 03:18:08,260 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-04-18 03:18:08,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-04-18 03:18:08,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1118. [2020-04-18 03:18:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1118 states. [2020-04-18 03:18:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 2994 transitions. [2020-04-18 03:18:08,317 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 2994 transitions. Word has length 40 [2020-04-18 03:18:08,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:08,319 INFO L479 AbstractCegarLoop]: Abstraction has 1118 states and 2994 transitions. [2020-04-18 03:18:08,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 03:18:08,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 2994 transitions. [2020-04-18 03:18:08,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 03:18:08,322 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:08,322 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:08,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:08,526 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:08,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:08,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1544047501, now seen corresponding path program 1 times [2020-04-18 03:18:08,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:08,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746572138] [2020-04-18 03:18:08,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 03:18:08,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746572138] [2020-04-18 03:18:08,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736111432] [2020-04-18 03:18:08,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-04-18 03:18:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:08,696 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-18 03:18:08,700 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:08,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 03:18:08,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:08,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-04-18 03:18:08,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581736374] [2020-04-18 03:18:08,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 03:18:08,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:08,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 03:18:08,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 03:18:08,728 INFO L87 Difference]: Start difference. First operand 1118 states and 2994 transitions. Second operand 9 states. [2020-04-18 03:18:08,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:08,900 INFO L93 Difference]: Finished difference Result 1653 states and 4192 transitions. [2020-04-18 03:18:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:18:08,901 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-04-18 03:18:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:08,908 INFO L225 Difference]: With dead ends: 1653 [2020-04-18 03:18:08,909 INFO L226 Difference]: Without dead ends: 1368 [2020-04-18 03:18:08,909 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:18:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2020-04-18 03:18:08,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1125. [2020-04-18 03:18:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-04-18 03:18:08,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 3008 transitions. [2020-04-18 03:18:08,938 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 3008 transitions. Word has length 45 [2020-04-18 03:18:08,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:08,939 INFO L479 AbstractCegarLoop]: Abstraction has 1125 states and 3008 transitions. [2020-04-18 03:18:08,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 03:18:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 3008 transitions. [2020-04-18 03:18:08,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 03:18:08,941 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:08,941 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:09,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:09,147 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:09,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:09,148 INFO L82 PathProgramCache]: Analyzing trace with hash 29322711, now seen corresponding path program 2 times [2020-04-18 03:18:09,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:09,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228019666] [2020-04-18 03:18:09,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:09,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 03:18:09,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228019666] [2020-04-18 03:18:09,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847166656] [2020-04-18 03:18:09,263 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 03:18:09,329 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:18:09,329 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:09,330 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2020-04-18 03:18:09,332 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:09,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:09,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-04-18 03:18:09,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:09,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-04-18 03:18:09,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994995070] [2020-04-18 03:18:09,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 03:18:09,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:09,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 03:18:09,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-04-18 03:18:09,381 INFO L87 Difference]: Start difference. First operand 1125 states and 3008 transitions. Second operand 11 states. [2020-04-18 03:18:09,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:09,770 INFO L93 Difference]: Finished difference Result 2195 states and 5755 transitions. [2020-04-18 03:18:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-04-18 03:18:09,771 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-04-18 03:18:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:09,779 INFO L225 Difference]: With dead ends: 2195 [2020-04-18 03:18:09,780 INFO L226 Difference]: Without dead ends: 1608 [2020-04-18 03:18:09,780 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2020-04-18 03:18:09,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-04-18 03:18:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 938. [2020-04-18 03:18:09,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 938 states. [2020-04-18 03:18:09,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 2518 transitions. [2020-04-18 03:18:09,808 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 2518 transitions. Word has length 45 [2020-04-18 03:18:09,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:09,808 INFO L479 AbstractCegarLoop]: Abstraction has 938 states and 2518 transitions. [2020-04-18 03:18:09,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 03:18:09,808 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 2518 transitions. [2020-04-18 03:18:09,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 03:18:09,810 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:09,810 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:10,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:10,019 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:10,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:10,020 INFO L82 PathProgramCache]: Analyzing trace with hash -778718691, now seen corresponding path program 3 times [2020-04-18 03:18:10,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:10,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768646369] [2020-04-18 03:18:10,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:10,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768646369] [2020-04-18 03:18:10,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679518709] [2020-04-18 03:18:10,136 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-04-18 03:18:10,187 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-04-18 03:18:10,188 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:10,189 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjunts are in the unsatisfiable core [2020-04-18 03:18:10,191 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:10,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:10,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:10,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-04-18 03:18:10,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467539070] [2020-04-18 03:18:10,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 03:18:10,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:10,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 03:18:10,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-04-18 03:18:10,215 INFO L87 Difference]: Start difference. First operand 938 states and 2518 transitions. Second operand 10 states. [2020-04-18 03:18:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:10,400 INFO L93 Difference]: Finished difference Result 1428 states and 3662 transitions. [2020-04-18 03:18:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 03:18:10,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-04-18 03:18:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:10,408 INFO L225 Difference]: With dead ends: 1428 [2020-04-18 03:18:10,408 INFO L226 Difference]: Without dead ends: 1158 [2020-04-18 03:18:10,408 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-04-18 03:18:10,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2020-04-18 03:18:10,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1025. [2020-04-18 03:18:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-04-18 03:18:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 2728 transitions. [2020-04-18 03:18:10,443 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 2728 transitions. Word has length 45 [2020-04-18 03:18:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:10,443 INFO L479 AbstractCegarLoop]: Abstraction has 1025 states and 2728 transitions. [2020-04-18 03:18:10,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 03:18:10,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 2728 transitions. [2020-04-18 03:18:10,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 03:18:10,446 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:10,446 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:10,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:10,650 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:10,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:10,651 INFO L82 PathProgramCache]: Analyzing trace with hash -974846095, now seen corresponding path program 4 times [2020-04-18 03:18:10,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:10,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643642359] [2020-04-18 03:18:10,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:10,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643642359] [2020-04-18 03:18:10,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513837715] [2020-04-18 03:18:10,757 INFO L92 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 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 [2020-04-18 03:18:10,809 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:18:10,809 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:10,810 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjunts are in the unsatisfiable core [2020-04-18 03:18:10,817 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:10,848 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:10,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:10,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:10,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-04-18 03:18:10,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920724886] [2020-04-18 03:18:10,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:18:10,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:10,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:18:10,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:18:10,872 INFO L87 Difference]: Start difference. First operand 1025 states and 2728 transitions. Second operand 12 states. [2020-04-18 03:18:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:11,459 INFO L93 Difference]: Finished difference Result 2701 states and 7044 transitions. [2020-04-18 03:18:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 03:18:11,459 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-04-18 03:18:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:11,468 INFO L225 Difference]: With dead ends: 2701 [2020-04-18 03:18:11,469 INFO L226 Difference]: Without dead ends: 1918 [2020-04-18 03:18:11,469 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2020-04-18 03:18:11,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2020-04-18 03:18:11,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1019. [2020-04-18 03:18:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-04-18 03:18:11,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 2730 transitions. [2020-04-18 03:18:11,498 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 2730 transitions. Word has length 45 [2020-04-18 03:18:11,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:11,499 INFO L479 AbstractCegarLoop]: Abstraction has 1019 states and 2730 transitions. [2020-04-18 03:18:11,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:18:11,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 2730 transitions. [2020-04-18 03:18:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 03:18:11,501 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:11,501 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:11,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:11,708 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:11,708 INFO L82 PathProgramCache]: Analyzing trace with hash 296330271, now seen corresponding path program 5 times [2020-04-18 03:18:11,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:11,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139970348] [2020-04-18 03:18:11,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:11,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139970348] [2020-04-18 03:18:11,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406880773] [2020-04-18 03:18:11,861 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_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 [2020-04-18 03:18:11,914 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-04-18 03:18:11,915 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:11,918 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-18 03:18:11,920 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:11,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:11,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:11,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-04-18 03:18:11,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014741694] [2020-04-18 03:18:11,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 03:18:11,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:11,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 03:18:11,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-04-18 03:18:11,939 INFO L87 Difference]: Start difference. First operand 1019 states and 2730 transitions. Second operand 11 states. [2020-04-18 03:18:12,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:12,129 INFO L93 Difference]: Finished difference Result 1743 states and 4392 transitions. [2020-04-18 03:18:12,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 03:18:12,130 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-04-18 03:18:12,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:12,135 INFO L225 Difference]: With dead ends: 1743 [2020-04-18 03:18:12,135 INFO L226 Difference]: Without dead ends: 1473 [2020-04-18 03:18:12,136 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:18:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2020-04-18 03:18:12,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1155. [2020-04-18 03:18:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-04-18 03:18:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 3088 transitions. [2020-04-18 03:18:12,167 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 3088 transitions. Word has length 50 [2020-04-18 03:18:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:12,167 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 3088 transitions. [2020-04-18 03:18:12,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 03:18:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 3088 transitions. [2020-04-18 03:18:12,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 03:18:12,169 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:12,170 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:12,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:12,381 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:12,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:12,382 INFO L82 PathProgramCache]: Analyzing trace with hash 100202867, now seen corresponding path program 6 times [2020-04-18 03:18:12,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:12,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457037013] [2020-04-18 03:18:12,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:12,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457037013] [2020-04-18 03:18:12,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393540404] [2020-04-18 03:18:12,530 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-04-18 03:18:12,601 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-04-18 03:18:12,601 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:12,602 INFO L264 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2020-04-18 03:18:12,609 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:12,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:12,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:12,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:12,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-04-18 03:18:12,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122766974] [2020-04-18 03:18:12,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 03:18:12,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:12,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 03:18:12,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-04-18 03:18:12,680 INFO L87 Difference]: Start difference. First operand 1155 states and 3088 transitions. Second operand 13 states. [2020-04-18 03:18:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:13,202 INFO L93 Difference]: Finished difference Result 2661 states and 7014 transitions. [2020-04-18 03:18:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 03:18:13,203 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-04-18 03:18:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:13,207 INFO L225 Difference]: With dead ends: 2661 [2020-04-18 03:18:13,207 INFO L226 Difference]: Without dead ends: 1878 [2020-04-18 03:18:13,208 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 03:18:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2020-04-18 03:18:13,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1088. [2020-04-18 03:18:13,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1088 states. [2020-04-18 03:18:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 2918 transitions. [2020-04-18 03:18:13,247 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 2918 transitions. Word has length 50 [2020-04-18 03:18:13,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:13,247 INFO L479 AbstractCegarLoop]: Abstraction has 1088 states and 2918 transitions. [2020-04-18 03:18:13,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 03:18:13,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 2918 transitions. [2020-04-18 03:18:13,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 03:18:13,250 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:13,250 INFO L425 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:13,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:13,459 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:13,459 INFO L82 PathProgramCache]: Analyzing trace with hash 14333788, now seen corresponding path program 7 times [2020-04-18 03:18:13,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:13,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604991307] [2020-04-18 03:18:13,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:13,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604991307] [2020-04-18 03:18:13,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137394446] [2020-04-18 03:18:13,606 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-04-18 03:18:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:13,670 INFO L264 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2020-04-18 03:18:13,674 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:13,690 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:13,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:13,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-04-18 03:18:13,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503956615] [2020-04-18 03:18:13,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 03:18:13,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:13,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 03:18:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 03:18:13,699 INFO L87 Difference]: Start difference. First operand 1088 states and 2918 transitions. Second operand 12 states. [2020-04-18 03:18:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:13,886 INFO L93 Difference]: Finished difference Result 1628 states and 4162 transitions. [2020-04-18 03:18:13,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 03:18:13,887 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-04-18 03:18:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:13,891 INFO L225 Difference]: With dead ends: 1628 [2020-04-18 03:18:13,891 INFO L226 Difference]: Without dead ends: 1358 [2020-04-18 03:18:13,892 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-04-18 03:18:13,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2020-04-18 03:18:13,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1175. [2020-04-18 03:18:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-04-18 03:18:13,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 3128 transitions. [2020-04-18 03:18:13,916 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 3128 transitions. Word has length 55 [2020-04-18 03:18:13,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:13,916 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 3128 transitions. [2020-04-18 03:18:13,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 03:18:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 3128 transitions. [2020-04-18 03:18:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 03:18:13,918 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:13,918 INFO L425 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:14,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:14,124 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:14,125 INFO L82 PathProgramCache]: Analyzing trace with hash -556445166, now seen corresponding path program 8 times [2020-04-18 03:18:14,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:14,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851310664] [2020-04-18 03:18:14,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:14,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851310664] [2020-04-18 03:18:14,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401879671] [2020-04-18 03:18:14,266 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 03:18:14,367 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:18:14,367 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:14,368 INFO L264 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2020-04-18 03:18:14,370 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:14,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:14,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:14,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:14,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-04-18 03:18:14,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142124886] [2020-04-18 03:18:14,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 03:18:14,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:14,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 03:18:14,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-04-18 03:18:14,425 INFO L87 Difference]: Start difference. First operand 1175 states and 3128 transitions. Second operand 14 states. [2020-04-18 03:18:14,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:14,974 INFO L93 Difference]: Finished difference Result 3051 states and 7944 transitions. [2020-04-18 03:18:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 03:18:14,974 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-04-18 03:18:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:14,979 INFO L225 Difference]: With dead ends: 3051 [2020-04-18 03:18:14,979 INFO L226 Difference]: Without dead ends: 2268 [2020-04-18 03:18:14,980 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=318, Invalid=942, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 03:18:14,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2020-04-18 03:18:15,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 1169. [2020-04-18 03:18:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2020-04-18 03:18:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 3130 transitions. [2020-04-18 03:18:15,010 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 3130 transitions. Word has length 55 [2020-04-18 03:18:15,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:15,011 INFO L479 AbstractCegarLoop]: Abstraction has 1169 states and 3130 transitions. [2020-04-18 03:18:15,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 03:18:15,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 3130 transitions. [2020-04-18 03:18:15,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-04-18 03:18:15,013 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:15,013 INFO L425 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:15,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:15,217 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:15,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:15,217 INFO L82 PathProgramCache]: Analyzing trace with hash -537817378, now seen corresponding path program 9 times [2020-04-18 03:18:15,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:15,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633709188] [2020-04-18 03:18:15,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:15,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633709188] [2020-04-18 03:18:15,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645296047] [2020-04-18 03:18:15,364 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-04-18 03:18:15,420 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-04-18 03:18:15,420 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:15,421 INFO L264 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2020-04-18 03:18:15,422 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:15,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:15,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:15,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-04-18 03:18:15,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123546421] [2020-04-18 03:18:15,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 03:18:15,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:15,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 03:18:15,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-04-18 03:18:15,454 INFO L87 Difference]: Start difference. First operand 1169 states and 3130 transitions. Second operand 13 states. [2020-04-18 03:18:15,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:15,692 INFO L93 Difference]: Finished difference Result 1993 states and 4992 transitions. [2020-04-18 03:18:15,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 03:18:15,692 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-04-18 03:18:15,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:15,697 INFO L225 Difference]: With dead ends: 1993 [2020-04-18 03:18:15,697 INFO L226 Difference]: Without dead ends: 1723 [2020-04-18 03:18:15,698 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2020-04-18 03:18:15,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-04-18 03:18:15,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1305. [2020-04-18 03:18:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-04-18 03:18:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 3488 transitions. [2020-04-18 03:18:15,755 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 3488 transitions. Word has length 60 [2020-04-18 03:18:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:15,755 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 3488 transitions. [2020-04-18 03:18:15,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 03:18:15,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 3488 transitions. [2020-04-18 03:18:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-04-18 03:18:15,758 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:15,758 INFO L425 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:15,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:15,963 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:15,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:15,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1108596332, now seen corresponding path program 10 times [2020-04-18 03:18:15,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:15,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910568885] [2020-04-18 03:18:15,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:16,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910568885] [2020-04-18 03:18:16,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420547218] [2020-04-18 03:18:16,113 INFO L92 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 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 [2020-04-18 03:18:16,168 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:18:16,168 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:16,169 INFO L264 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2020-04-18 03:18:16,170 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:16,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:16,199 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:16,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:16,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-04-18 03:18:16,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842047801] [2020-04-18 03:18:16,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 03:18:16,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:16,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 03:18:16,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-04-18 03:18:16,205 INFO L87 Difference]: Start difference. First operand 1305 states and 3488 transitions. Second operand 14 states. [2020-04-18 03:18:16,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:16,748 INFO L93 Difference]: Finished difference Result 2625 states and 7014 transitions. [2020-04-18 03:18:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 03:18:16,749 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-04-18 03:18:16,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:16,752 INFO L225 Difference]: With dead ends: 2625 [2020-04-18 03:18:16,752 INFO L226 Difference]: Without dead ends: 1898 [2020-04-18 03:18:16,753 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 03:18:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2020-04-18 03:18:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1178. [2020-04-18 03:18:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-04-18 03:18:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 3168 transitions. [2020-04-18 03:18:16,780 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 3168 transitions. Word has length 60 [2020-04-18 03:18:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:16,781 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 3168 transitions. [2020-04-18 03:18:16,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 03:18:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 3168 transitions. [2020-04-18 03:18:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-04-18 03:18:16,783 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:16,783 INFO L425 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:16,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:16,987 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:16,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:16,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1180337701, now seen corresponding path program 11 times [2020-04-18 03:18:16,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:16,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630469377] [2020-04-18 03:18:16,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:17,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630469377] [2020-04-18 03:18:17,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525025782] [2020-04-18 03:18:17,152 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-04-18 03:18:17,199 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-04-18 03:18:17,199 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:17,200 INFO L264 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2020-04-18 03:18:17,201 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:17,241 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:17,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:17,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-04-18 03:18:17,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369462478] [2020-04-18 03:18:17,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 03:18:17,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:17,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 03:18:17,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:18:17,249 INFO L87 Difference]: Start difference. First operand 1178 states and 3168 transitions. Second operand 15 states. [2020-04-18 03:18:17,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:17,510 INFO L93 Difference]: Finished difference Result 1768 states and 4512 transitions. [2020-04-18 03:18:17,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 03:18:17,510 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-04-18 03:18:17,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:17,513 INFO L225 Difference]: With dead ends: 1768 [2020-04-18 03:18:17,513 INFO L226 Difference]: Without dead ends: 1498 [2020-04-18 03:18:17,514 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2020-04-18 03:18:17,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-04-18 03:18:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1265. [2020-04-18 03:18:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1265 states. [2020-04-18 03:18:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 3378 transitions. [2020-04-18 03:18:17,540 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 3378 transitions. Word has length 65 [2020-04-18 03:18:17,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:17,540 INFO L479 AbstractCegarLoop]: Abstraction has 1265 states and 3378 transitions. [2020-04-18 03:18:17,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 03:18:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 3378 transitions. [2020-04-18 03:18:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-04-18 03:18:17,543 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:17,543 INFO L425 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:17,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:17,747 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:17,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:17,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1262847859, now seen corresponding path program 12 times [2020-04-18 03:18:17,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:17,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123867840] [2020-04-18 03:18:17,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:17,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123867840] [2020-04-18 03:18:17,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891981550] [2020-04-18 03:18:17,902 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-04-18 03:18:17,955 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-04-18 03:18:17,956 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:17,957 INFO L264 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjunts are in the unsatisfiable core [2020-04-18 03:18:17,958 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:17,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:18,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:18,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:18,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2020-04-18 03:18:18,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546672588] [2020-04-18 03:18:18,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:18:18,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:18,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:18:18,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:18:18,011 INFO L87 Difference]: Start difference. First operand 1265 states and 3378 transitions. Second operand 16 states. [2020-04-18 03:18:18,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:18,690 INFO L93 Difference]: Finished difference Result 3025 states and 7840 transitions. [2020-04-18 03:18:18,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-18 03:18:18,691 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-04-18 03:18:18,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:18,696 INFO L225 Difference]: With dead ends: 3025 [2020-04-18 03:18:18,697 INFO L226 Difference]: Without dead ends: 2483 [2020-04-18 03:18:18,698 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 03:18:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2020-04-18 03:18:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 1755. [2020-04-18 03:18:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-04-18 03:18:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 4848 transitions. [2020-04-18 03:18:18,749 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 4848 transitions. Word has length 65 [2020-04-18 03:18:18,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:18,749 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 4848 transitions. [2020-04-18 03:18:18,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:18:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 4848 transitions. [2020-04-18 03:18:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-04-18 03:18:18,754 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:18,754 INFO L425 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:18,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:18,957 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:18,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:18,958 INFO L82 PathProgramCache]: Analyzing trace with hash -478259491, now seen corresponding path program 13 times [2020-04-18 03:18:18,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:18,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810490000] [2020-04-18 03:18:18,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:19,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810490000] [2020-04-18 03:18:19,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507095438] [2020-04-18 03:18:19,174 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-04-18 03:18:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:19,277 INFO L264 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 16 conjunts are in the unsatisfiable core [2020-04-18 03:18:19,279 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:19,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:19,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:19,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-04-18 03:18:19,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209501531] [2020-04-18 03:18:19,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 03:18:19,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:19,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 03:18:19,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 03:18:19,327 INFO L87 Difference]: Start difference. First operand 1755 states and 4848 transitions. Second operand 15 states. [2020-04-18 03:18:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:19,664 INFO L93 Difference]: Finished difference Result 2593 states and 6652 transitions. [2020-04-18 03:18:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 03:18:19,665 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 70 [2020-04-18 03:18:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:19,668 INFO L225 Difference]: With dead ends: 2593 [2020-04-18 03:18:19,668 INFO L226 Difference]: Without dead ends: 2323 [2020-04-18 03:18:19,669 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2020-04-18 03:18:19,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2020-04-18 03:18:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 1805. [2020-04-18 03:18:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2020-04-18 03:18:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 4948 transitions. [2020-04-18 03:18:19,714 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 4948 transitions. Word has length 70 [2020-04-18 03:18:19,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:19,714 INFO L479 AbstractCegarLoop]: Abstraction has 1805 states and 4948 transitions. [2020-04-18 03:18:19,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 03:18:19,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 4948 transitions. [2020-04-18 03:18:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-04-18 03:18:19,718 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:19,719 INFO L425 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:19,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:19,923 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:19,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:19,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1964926069, now seen corresponding path program 14 times [2020-04-18 03:18:19,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:19,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618035838] [2020-04-18 03:18:19,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:20,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618035838] [2020-04-18 03:18:20,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63841439] [2020-04-18 03:18:20,078 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 03:18:20,131 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:18:20,132 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:20,132 INFO L264 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 16 conjunts are in the unsatisfiable core [2020-04-18 03:18:20,134 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:20,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:20,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:20,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:20,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-04-18 03:18:20,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170380696] [2020-04-18 03:18:20,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 03:18:20,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:20,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 03:18:20,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-04-18 03:18:20,179 INFO L87 Difference]: Start difference. First operand 1805 states and 4948 transitions. Second operand 16 states. [2020-04-18 03:18:20,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:20,893 INFO L93 Difference]: Finished difference Result 2609 states and 6960 transitions. [2020-04-18 03:18:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-04-18 03:18:20,894 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-04-18 03:18:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:20,897 INFO L225 Difference]: With dead ends: 2609 [2020-04-18 03:18:20,897 INFO L226 Difference]: Without dead ends: 2123 [2020-04-18 03:18:20,898 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=434, Invalid=1126, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 03:18:20,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2020-04-18 03:18:20,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 1328. [2020-04-18 03:18:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-04-18 03:18:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 3568 transitions. [2020-04-18 03:18:20,929 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 3568 transitions. Word has length 70 [2020-04-18 03:18:20,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:20,929 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 3568 transitions. [2020-04-18 03:18:20,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 03:18:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 3568 transitions. [2020-04-18 03:18:20,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-04-18 03:18:20,931 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:20,932 INFO L425 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:21,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:21,137 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:21,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:21,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1428526694, now seen corresponding path program 15 times [2020-04-18 03:18:21,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:21,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465803863] [2020-04-18 03:18:21,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:21,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465803863] [2020-04-18 03:18:21,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862686709] [2020-04-18 03:18:21,422 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-04-18 03:18:21,478 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-04-18 03:18:21,478 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:21,479 INFO L264 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 17 conjunts are in the unsatisfiable core [2020-04-18 03:18:21,481 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:21,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:21,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:21,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-04-18 03:18:21,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080046654] [2020-04-18 03:18:21,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 03:18:21,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:21,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 03:18:21,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-04-18 03:18:21,517 INFO L87 Difference]: Start difference. First operand 1328 states and 3568 transitions. Second operand 17 states. [2020-04-18 03:18:21,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:21,832 INFO L93 Difference]: Finished difference Result 1968 states and 5012 transitions. [2020-04-18 03:18:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 03:18:21,832 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2020-04-18 03:18:21,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:21,834 INFO L225 Difference]: With dead ends: 1968 [2020-04-18 03:18:21,834 INFO L226 Difference]: Without dead ends: 1698 [2020-04-18 03:18:21,835 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2020-04-18 03:18:21,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2020-04-18 03:18:21,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1415. [2020-04-18 03:18:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1415 states. [2020-04-18 03:18:21,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 3778 transitions. [2020-04-18 03:18:21,862 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 3778 transitions. Word has length 75 [2020-04-18 03:18:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:21,862 INFO L479 AbstractCegarLoop]: Abstraction has 1415 states and 3778 transitions. [2020-04-18 03:18:21,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 03:18:21,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 3778 transitions. [2020-04-18 03:18:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-04-18 03:18:21,869 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:21,870 INFO L425 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:22,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:22,073 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:22,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:22,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1352714348, now seen corresponding path program 16 times [2020-04-18 03:18:22,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:22,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342176703] [2020-04-18 03:18:22,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:22,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342176703] [2020-04-18 03:18:22,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8437024] [2020-04-18 03:18:22,300 INFO L92 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 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 [2020-04-18 03:18:22,385 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:18:22,385 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:22,387 INFO L264 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 17 conjunts are in the unsatisfiable core [2020-04-18 03:18:22,389 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:22,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:22,449 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:22,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:22,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-04-18 03:18:22,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176550838] [2020-04-18 03:18:22,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 03:18:22,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:22,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 03:18:22,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-04-18 03:18:22,466 INFO L87 Difference]: Start difference. First operand 1415 states and 3778 transitions. Second operand 18 states. [2020-04-18 03:18:23,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:23,307 INFO L93 Difference]: Finished difference Result 3375 states and 8740 transitions. [2020-04-18 03:18:23,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-18 03:18:23,307 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 75 [2020-04-18 03:18:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:23,310 INFO L225 Difference]: With dead ends: 3375 [2020-04-18 03:18:23,310 INFO L226 Difference]: Without dead ends: 2833 [2020-04-18 03:18:23,311 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 03:18:23,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2020-04-18 03:18:23,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2005. [2020-04-18 03:18:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2005 states. [2020-04-18 03:18:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 5548 transitions. [2020-04-18 03:18:23,346 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 5548 transitions. Word has length 75 [2020-04-18 03:18:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:23,347 INFO L479 AbstractCegarLoop]: Abstraction has 2005 states and 5548 transitions. [2020-04-18 03:18:23,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 03:18:23,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 5548 transitions. [2020-04-18 03:18:23,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-04-18 03:18:23,350 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:23,351 INFO L425 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:23,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:23,555 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:23,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:23,555 INFO L82 PathProgramCache]: Analyzing trace with hash -20157412, now seen corresponding path program 17 times [2020-04-18 03:18:23,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:23,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047497332] [2020-04-18 03:18:23,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:23,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047497332] [2020-04-18 03:18:23,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523150992] [2020-04-18 03:18:23,784 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-04-18 03:18:23,840 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-04-18 03:18:23,841 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:23,842 INFO L264 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-18 03:18:23,843 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:23,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:23,898 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:23,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:23,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-04-18 03:18:23,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608257889] [2020-04-18 03:18:23,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 03:18:23,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:23,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 03:18:23,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-04-18 03:18:23,900 INFO L87 Difference]: Start difference. First operand 2005 states and 5548 transitions. Second operand 18 states. [2020-04-18 03:18:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:24,260 INFO L93 Difference]: Finished difference Result 2943 states and 7552 transitions. [2020-04-18 03:18:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 03:18:24,261 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-04-18 03:18:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:24,265 INFO L225 Difference]: With dead ends: 2943 [2020-04-18 03:18:24,265 INFO L226 Difference]: Without dead ends: 2673 [2020-04-18 03:18:24,266 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 03:18:24,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2020-04-18 03:18:24,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 2055. [2020-04-18 03:18:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2020-04-18 03:18:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 5648 transitions. [2020-04-18 03:18:24,305 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 5648 transitions. Word has length 80 [2020-04-18 03:18:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:24,306 INFO L479 AbstractCegarLoop]: Abstraction has 2055 states and 5648 transitions. [2020-04-18 03:18:24,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 03:18:24,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 5648 transitions. [2020-04-18 03:18:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-04-18 03:18:24,309 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:24,309 INFO L425 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:24,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:24,511 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:24,512 INFO L82 PathProgramCache]: Analyzing trace with hash 55654934, now seen corresponding path program 18 times [2020-04-18 03:18:24,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:24,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570091843] [2020-04-18 03:18:24,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:24,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570091843] [2020-04-18 03:18:24,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102403394] [2020-04-18 03:18:24,678 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-04-18 03:18:24,735 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-04-18 03:18:24,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:24,736 INFO L264 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-18 03:18:24,738 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:24,769 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:24,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:24,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:24,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-04-18 03:18:24,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905690612] [2020-04-18 03:18:24,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 03:18:24,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:24,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 03:18:24,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-04-18 03:18:24,800 INFO L87 Difference]: Start difference. First operand 2055 states and 5648 transitions. Second operand 19 states. [2020-04-18 03:18:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:25,739 INFO L93 Difference]: Finished difference Result 3245 states and 8560 transitions. [2020-04-18 03:18:25,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-04-18 03:18:25,740 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-04-18 03:18:25,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:25,744 INFO L225 Difference]: With dead ends: 3245 [2020-04-18 03:18:25,744 INFO L226 Difference]: Without dead ends: 2703 [2020-04-18 03:18:25,745 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=633, Invalid=1817, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 03:18:25,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2020-04-18 03:18:25,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 1538. [2020-04-18 03:18:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2020-04-18 03:18:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 4118 transitions. [2020-04-18 03:18:25,790 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 4118 transitions. Word has length 80 [2020-04-18 03:18:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:25,791 INFO L479 AbstractCegarLoop]: Abstraction has 1538 states and 4118 transitions. [2020-04-18 03:18:25,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 03:18:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 4118 transitions. [2020-04-18 03:18:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-04-18 03:18:25,793 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:25,794 INFO L425 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:25,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:25,998 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:25,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:25,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1150416537, now seen corresponding path program 19 times [2020-04-18 03:18:25,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:25,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432215450] [2020-04-18 03:18:25,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:26,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432215450] [2020-04-18 03:18:26,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483426686] [2020-04-18 03:18:26,221 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-04-18 03:18:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:26,274 INFO L264 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 19 conjunts are in the unsatisfiable core [2020-04-18 03:18:26,275 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:26,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:26,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:26,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-04-18 03:18:26,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018119130] [2020-04-18 03:18:26,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 03:18:26,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:26,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 03:18:26,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-04-18 03:18:26,304 INFO L87 Difference]: Start difference. First operand 1538 states and 4118 transitions. Second operand 18 states. [2020-04-18 03:18:26,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:26,623 INFO L93 Difference]: Finished difference Result 2228 states and 5662 transitions. [2020-04-18 03:18:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-04-18 03:18:26,624 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-04-18 03:18:26,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:26,626 INFO L225 Difference]: With dead ends: 2228 [2020-04-18 03:18:26,626 INFO L226 Difference]: Without dead ends: 1958 [2020-04-18 03:18:26,627 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 03:18:26,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2020-04-18 03:18:26,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1625. [2020-04-18 03:18:26,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1625 states. [2020-04-18 03:18:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 4328 transitions. [2020-04-18 03:18:26,648 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 4328 transitions. Word has length 85 [2020-04-18 03:18:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:26,648 INFO L479 AbstractCegarLoop]: Abstraction has 1625 states and 4328 transitions. [2020-04-18 03:18:26,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 03:18:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 4328 transitions. [2020-04-18 03:18:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-04-18 03:18:26,650 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:26,650 INFO L425 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:26,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:26,854 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:26,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:26,854 INFO L82 PathProgramCache]: Analyzing trace with hash -191368587, now seen corresponding path program 20 times [2020-04-18 03:18:26,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:26,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285192748] [2020-04-18 03:18:26,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:27,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285192748] [2020-04-18 03:18:27,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405147886] [2020-04-18 03:18:27,038 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 03:18:27,114 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:18:27,114 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:27,115 INFO L264 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 19 conjunts are in the unsatisfiable core [2020-04-18 03:18:27,116 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:27,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:27,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:27,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:27,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-04-18 03:18:27,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582425882] [2020-04-18 03:18:27,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 03:18:27,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:27,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 03:18:27,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:18:27,181 INFO L87 Difference]: Start difference. First operand 1625 states and 4328 transitions. Second operand 20 states. [2020-04-18 03:18:28,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:28,281 INFO L93 Difference]: Finished difference Result 4101 states and 10644 transitions. [2020-04-18 03:18:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-04-18 03:18:28,281 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 85 [2020-04-18 03:18:28,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:28,285 INFO L225 Difference]: With dead ends: 4101 [2020-04-18 03:18:28,285 INFO L226 Difference]: Without dead ends: 3318 [2020-04-18 03:18:28,287 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=732, Invalid=2130, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 03:18:28,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3318 states. [2020-04-18 03:18:28,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3318 to 1619. [2020-04-18 03:18:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2020-04-18 03:18:28,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 4330 transitions. [2020-04-18 03:18:28,324 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 4330 transitions. Word has length 85 [2020-04-18 03:18:28,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:28,324 INFO L479 AbstractCegarLoop]: Abstraction has 1619 states and 4330 transitions. [2020-04-18 03:18:28,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 03:18:28,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 4330 transitions. [2020-04-18 03:18:28,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-04-18 03:18:28,327 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:28,327 INFO L425 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:28,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:28,531 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:28,532 INFO L82 PathProgramCache]: Analyzing trace with hash 931937947, now seen corresponding path program 21 times [2020-04-18 03:18:28,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:28,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113542482] [2020-04-18 03:18:28,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:28,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113542482] [2020-04-18 03:18:28,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940475674] [2020-04-18 03:18:28,859 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-04-18 03:18:28,945 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-04-18 03:18:28,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:28,947 INFO L264 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-04-18 03:18:28,949 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:28,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:28,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:28,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-04-18 03:18:28,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334531786] [2020-04-18 03:18:28,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 03:18:28,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:28,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 03:18:28,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-04-18 03:18:28,985 INFO L87 Difference]: Start difference. First operand 1619 states and 4330 transitions. Second operand 19 states. [2020-04-18 03:18:29,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:29,365 INFO L93 Difference]: Finished difference Result 2743 states and 6792 transitions. [2020-04-18 03:18:29,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 03:18:29,366 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 90 [2020-04-18 03:18:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:29,370 INFO L225 Difference]: With dead ends: 2743 [2020-04-18 03:18:29,370 INFO L226 Difference]: Without dead ends: 2473 [2020-04-18 03:18:29,371 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 03:18:29,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2020-04-18 03:18:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 1755. [2020-04-18 03:18:29,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-04-18 03:18:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 4688 transitions. [2020-04-18 03:18:29,436 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 4688 transitions. Word has length 90 [2020-04-18 03:18:29,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:29,437 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 4688 transitions. [2020-04-18 03:18:29,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 03:18:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 4688 transitions. [2020-04-18 03:18:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-04-18 03:18:29,440 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:29,441 INFO L425 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:29,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:29,645 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:29,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:29,646 INFO L82 PathProgramCache]: Analyzing trace with hash -409847177, now seen corresponding path program 22 times [2020-04-18 03:18:29,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:29,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056192990] [2020-04-18 03:18:29,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:29,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056192990] [2020-04-18 03:18:29,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862562257] [2020-04-18 03:18:29,893 INFO L92 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 [2020-04-18 03:18:29,946 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:18:29,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:29,947 INFO L264 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-04-18 03:18:29,948 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:29,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:30,011 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:30,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:30,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-04-18 03:18:30,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181504870] [2020-04-18 03:18:30,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 03:18:30,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:30,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 03:18:30,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:18:30,023 INFO L87 Difference]: Start difference. First operand 1755 states and 4688 transitions. Second operand 20 states. [2020-04-18 03:18:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:30,967 INFO L93 Difference]: Finished difference Result 3525 states and 9414 transitions. [2020-04-18 03:18:30,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-04-18 03:18:30,972 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2020-04-18 03:18:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:30,977 INFO L225 Difference]: With dead ends: 3525 [2020-04-18 03:18:30,977 INFO L226 Difference]: Without dead ends: 2798 [2020-04-18 03:18:30,978 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=760, Invalid=1996, Unknown=0, NotChecked=0, Total=2756 [2020-04-18 03:18:30,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2020-04-18 03:18:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1628. [2020-04-18 03:18:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1628 states. [2020-04-18 03:18:31,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 4368 transitions. [2020-04-18 03:18:31,007 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 4368 transitions. Word has length 90 [2020-04-18 03:18:31,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:31,008 INFO L479 AbstractCegarLoop]: Abstraction has 1628 states and 4368 transitions. [2020-04-18 03:18:31,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 03:18:31,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 4368 transitions. [2020-04-18 03:18:31,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-04-18 03:18:31,011 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:31,011 INFO L425 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:31,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:31,215 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:31,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:31,215 INFO L82 PathProgramCache]: Analyzing trace with hash -954691368, now seen corresponding path program 23 times [2020-04-18 03:18:31,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:31,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068908856] [2020-04-18 03:18:31,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:31,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068908856] [2020-04-18 03:18:31,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963705545] [2020-04-18 03:18:31,492 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-04-18 03:18:31,557 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-04-18 03:18:31,557 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:31,559 INFO L264 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 21 conjunts are in the unsatisfiable core [2020-04-18 03:18:31,561 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:31,576 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:31,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:31,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-04-18 03:18:31,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197027757] [2020-04-18 03:18:31,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 03:18:31,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:31,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 03:18:31,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-04-18 03:18:31,625 INFO L87 Difference]: Start difference. First operand 1628 states and 4368 transitions. Second operand 20 states. [2020-04-18 03:18:32,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:32,155 INFO L93 Difference]: Finished difference Result 2368 states and 6012 transitions. [2020-04-18 03:18:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 03:18:32,155 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 95 [2020-04-18 03:18:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:32,158 INFO L225 Difference]: With dead ends: 2368 [2020-04-18 03:18:32,158 INFO L226 Difference]: Without dead ends: 2098 [2020-04-18 03:18:32,159 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=956, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 03:18:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2020-04-18 03:18:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1715. [2020-04-18 03:18:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2020-04-18 03:18:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 4578 transitions. [2020-04-18 03:18:32,186 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 4578 transitions. Word has length 95 [2020-04-18 03:18:32,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:32,186 INFO L479 AbstractCegarLoop]: Abstraction has 1715 states and 4578 transitions. [2020-04-18 03:18:32,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 03:18:32,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 4578 transitions. [2020-04-18 03:18:32,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-04-18 03:18:32,190 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:32,190 INFO L425 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:32,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:32,393 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:32,394 INFO L82 PathProgramCache]: Analyzing trace with hash 447825942, now seen corresponding path program 24 times [2020-04-18 03:18:32,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:32,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145299624] [2020-04-18 03:18:32,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:32,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145299624] [2020-04-18 03:18:32,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697079153] [2020-04-18 03:18:32,606 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-04-18 03:18:32,668 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-04-18 03:18:32,669 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:32,669 INFO L264 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 21 conjunts are in the unsatisfiable core [2020-04-18 03:18:32,671 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:32,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:32,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:32,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:32,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-04-18 03:18:32,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742780961] [2020-04-18 03:18:32,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-04-18 03:18:32,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:32,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-18 03:18:32,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-04-18 03:18:32,721 INFO L87 Difference]: Start difference. First operand 1715 states and 4578 transitions. Second operand 21 states. [2020-04-18 03:18:33,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:33,617 INFO L93 Difference]: Finished difference Result 3694 states and 9600 transitions. [2020-04-18 03:18:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-04-18 03:18:33,617 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2020-04-18 03:18:33,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:33,622 INFO L225 Difference]: With dead ends: 3694 [2020-04-18 03:18:33,623 INFO L226 Difference]: Without dead ends: 3268 [2020-04-18 03:18:33,624 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=836, Invalid=2134, Unknown=0, NotChecked=0, Total=2970 [2020-04-18 03:18:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2020-04-18 03:18:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 1709. [2020-04-18 03:18:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-04-18 03:18:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 4580 transitions. [2020-04-18 03:18:33,660 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 4580 transitions. Word has length 95 [2020-04-18 03:18:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:33,661 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 4580 transitions. [2020-04-18 03:18:33,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-04-18 03:18:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 4580 transitions. [2020-04-18 03:18:33,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-04-18 03:18:33,664 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:33,664 INFO L425 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:33,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:33,867 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:33,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1168260698, now seen corresponding path program 25 times [2020-04-18 03:18:33,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:33,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024203143] [2020-04-18 03:18:33,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:34,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024203143] [2020-04-18 03:18:34,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711955033] [2020-04-18 03:18:34,315 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-04-18 03:18:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:34,373 INFO L264 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjunts are in the unsatisfiable core [2020-04-18 03:18:34,375 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:34,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:34,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:34,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-04-18 03:18:34,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566307507] [2020-04-18 03:18:34,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-04-18 03:18:34,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:34,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-04-18 03:18:34,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2020-04-18 03:18:34,409 INFO L87 Difference]: Start difference. First operand 1709 states and 4580 transitions. Second operand 21 states. [2020-04-18 03:18:34,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:34,809 INFO L93 Difference]: Finished difference Result 2933 states and 7242 transitions. [2020-04-18 03:18:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 03:18:34,810 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 100 [2020-04-18 03:18:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:34,813 INFO L225 Difference]: With dead ends: 2933 [2020-04-18 03:18:34,813 INFO L226 Difference]: Without dead ends: 2663 [2020-04-18 03:18:34,814 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=418, Invalid=1142, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 03:18:34,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2020-04-18 03:18:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 1845. [2020-04-18 03:18:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1845 states. [2020-04-18 03:18:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 4938 transitions. [2020-04-18 03:18:34,845 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 4938 transitions. Word has length 100 [2020-04-18 03:18:34,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:34,845 INFO L479 AbstractCegarLoop]: Abstraction has 1845 states and 4938 transitions. [2020-04-18 03:18:34,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-04-18 03:18:34,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 4938 transitions. [2020-04-18 03:18:34,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-04-18 03:18:34,848 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:34,849 INFO L425 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:35,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:35,052 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:35,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:35,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1724189288, now seen corresponding path program 26 times [2020-04-18 03:18:35,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:35,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324285273] [2020-04-18 03:18:35,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:35,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324285273] [2020-04-18 03:18:35,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086383524] [2020-04-18 03:18:35,324 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 03:18:35,406 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:18:35,406 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:35,408 INFO L264 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjunts are in the unsatisfiable core [2020-04-18 03:18:35,411 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:35,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:35,486 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:35,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:35,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-04-18 03:18:35,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200415694] [2020-04-18 03:18:35,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 03:18:35,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:35,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 03:18:35,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-04-18 03:18:35,502 INFO L87 Difference]: Start difference. First operand 1845 states and 4938 transitions. Second operand 23 states. [2020-04-18 03:18:36,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:36,665 INFO L93 Difference]: Finished difference Result 3905 states and 10330 transitions. [2020-04-18 03:18:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-04-18 03:18:36,666 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-04-18 03:18:36,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:36,669 INFO L225 Difference]: With dead ends: 3905 [2020-04-18 03:18:36,669 INFO L226 Difference]: Without dead ends: 3363 [2020-04-18 03:18:36,670 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=997, Invalid=2785, Unknown=0, NotChecked=0, Total=3782 [2020-04-18 03:18:36,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2020-04-18 03:18:36,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 2630. [2020-04-18 03:18:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2630 states. [2020-04-18 03:18:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 7298 transitions. [2020-04-18 03:18:36,698 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 7298 transitions. Word has length 100 [2020-04-18 03:18:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:36,699 INFO L479 AbstractCegarLoop]: Abstraction has 2630 states and 7298 transitions. [2020-04-18 03:18:36,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 03:18:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 7298 transitions. [2020-04-18 03:18:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-04-18 03:18:36,703 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:36,704 INFO L425 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:36,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:36,907 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:36,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:36,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1846630313, now seen corresponding path program 27 times [2020-04-18 03:18:36,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:36,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097506829] [2020-04-18 03:18:36,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:37,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097506829] [2020-04-18 03:18:37,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016824299] [2020-04-18 03:18:37,214 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-04-18 03:18:37,279 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-04-18 03:18:37,280 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:37,280 INFO L264 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 23 conjunts are in the unsatisfiable core [2020-04-18 03:18:37,282 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:37,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:37,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:37,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-04-18 03:18:37,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195653390] [2020-04-18 03:18:37,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 03:18:37,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:37,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 03:18:37,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-04-18 03:18:37,344 INFO L87 Difference]: Start difference. First operand 2630 states and 7298 transitions. Second operand 23 states. [2020-04-18 03:18:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:37,784 INFO L93 Difference]: Finished difference Result 3378 states and 8922 transitions. [2020-04-18 03:18:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 03:18:37,784 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 105 [2020-04-18 03:18:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:37,788 INFO L225 Difference]: With dead ends: 3378 [2020-04-18 03:18:37,789 INFO L226 Difference]: Without dead ends: 3108 [2020-04-18 03:18:37,789 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=1226, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 03:18:37,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2020-04-18 03:18:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2675. [2020-04-18 03:18:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2675 states. [2020-04-18 03:18:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 7388 transitions. [2020-04-18 03:18:37,824 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 7388 transitions. Word has length 105 [2020-04-18 03:18:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:37,824 INFO L479 AbstractCegarLoop]: Abstraction has 2675 states and 7388 transitions. [2020-04-18 03:18:37,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 03:18:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 7388 transitions. [2020-04-18 03:18:37,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-04-18 03:18:37,827 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:37,827 INFO L425 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:38,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:38,031 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:38,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:38,032 INFO L82 PathProgramCache]: Analyzing trace with hash -927414153, now seen corresponding path program 28 times [2020-04-18 03:18:38,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:38,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412067044] [2020-04-18 03:18:38,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:38,291 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:38,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412067044] [2020-04-18 03:18:38,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596242280] [2020-04-18 03:18:38,292 INFO L92 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 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 [2020-04-18 03:18:38,351 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 03:18:38,351 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:38,352 INFO L264 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 23 conjunts are in the unsatisfiable core [2020-04-18 03:18:38,354 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:38,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:38,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:38,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:38,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2020-04-18 03:18:38,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744801134] [2020-04-18 03:18:38,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 03:18:38,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:38,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 03:18:38,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-04-18 03:18:38,455 INFO L87 Difference]: Start difference. First operand 2675 states and 7388 transitions. Second operand 24 states. [2020-04-18 03:18:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:39,621 INFO L93 Difference]: Finished difference Result 4485 states and 11590 transitions. [2020-04-18 03:18:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-04-18 03:18:39,621 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 105 [2020-04-18 03:18:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:39,625 INFO L225 Difference]: With dead ends: 4485 [2020-04-18 03:18:39,626 INFO L226 Difference]: Without dead ends: 3943 [2020-04-18 03:18:39,627 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1100, Invalid=3060, Unknown=0, NotChecked=0, Total=4160 [2020-04-18 03:18:39,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2020-04-18 03:18:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 1919. [2020-04-18 03:18:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2020-04-18 03:18:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 5130 transitions. [2020-04-18 03:18:39,660 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 5130 transitions. Word has length 105 [2020-04-18 03:18:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:39,660 INFO L479 AbstractCegarLoop]: Abstraction has 1919 states and 5130 transitions. [2020-04-18 03:18:39,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 03:18:39,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 5130 transitions. [2020-04-18 03:18:39,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-04-18 03:18:39,662 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:39,662 INFO L425 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:39,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:39,863 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:39,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:39,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1646713689, now seen corresponding path program 29 times [2020-04-18 03:18:39,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:39,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465314239] [2020-04-18 03:18:39,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:40,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465314239] [2020-04-18 03:18:40,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932567752] [2020-04-18 03:18:40,243 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-04-18 03:18:40,314 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-04-18 03:18:40,314 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:40,315 INFO L264 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2020-04-18 03:18:40,317 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:40,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:40,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:40,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-04-18 03:18:40,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795774238] [2020-04-18 03:18:40,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 03:18:40,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:40,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 03:18:40,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2020-04-18 03:18:40,384 INFO L87 Difference]: Start difference. First operand 1919 states and 5130 transitions. Second operand 24 states. [2020-04-18 03:18:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:40,901 INFO L93 Difference]: Finished difference Result 3243 states and 7992 transitions. [2020-04-18 03:18:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 03:18:40,901 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 110 [2020-04-18 03:18:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:40,904 INFO L225 Difference]: With dead ends: 3243 [2020-04-18 03:18:40,904 INFO L226 Difference]: Without dead ends: 2973 [2020-04-18 03:18:40,905 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=543, Invalid=1437, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 03:18:40,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2973 states. [2020-04-18 03:18:40,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2973 to 2055. [2020-04-18 03:18:40,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2020-04-18 03:18:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 5488 transitions. [2020-04-18 03:18:40,929 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 5488 transitions. Word has length 110 [2020-04-18 03:18:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:40,929 INFO L479 AbstractCegarLoop]: Abstraction has 2055 states and 5488 transitions. [2020-04-18 03:18:40,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 03:18:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 5488 transitions. [2020-04-18 03:18:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-04-18 03:18:40,932 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:40,932 INFO L425 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:41,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:41,134 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:41,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:41,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1729037447, now seen corresponding path program 30 times [2020-04-18 03:18:41,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:41,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972684137] [2020-04-18 03:18:41,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:41,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972684137] [2020-04-18 03:18:41,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880945164] [2020-04-18 03:18:41,374 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-04-18 03:18:41,442 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-04-18 03:18:41,442 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:41,443 INFO L264 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2020-04-18 03:18:41,444 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:41,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:41,480 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:41,490 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:41,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:41,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-04-18 03:18:41,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297178973] [2020-04-18 03:18:41,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 03:18:41,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:41,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 03:18:41,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2020-04-18 03:18:41,491 INFO L87 Difference]: Start difference. First operand 2055 states and 5488 transitions. Second operand 24 states. [2020-04-18 03:18:42,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:42,717 INFO L93 Difference]: Finished difference Result 4125 states and 11014 transitions. [2020-04-18 03:18:42,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-04-18 03:18:42,718 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 110 [2020-04-18 03:18:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:42,723 INFO L225 Difference]: With dead ends: 4125 [2020-04-18 03:18:42,723 INFO L226 Difference]: Without dead ends: 3398 [2020-04-18 03:18:42,724 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1160, Invalid=3000, Unknown=0, NotChecked=0, Total=4160 [2020-04-18 03:18:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2020-04-18 03:18:42,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 1928. [2020-04-18 03:18:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1928 states. [2020-04-18 03:18:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 5168 transitions. [2020-04-18 03:18:42,750 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 5168 transitions. Word has length 110 [2020-04-18 03:18:42,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:42,750 INFO L479 AbstractCegarLoop]: Abstraction has 1928 states and 5168 transitions. [2020-04-18 03:18:42,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 03:18:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 5168 transitions. [2020-04-18 03:18:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-04-18 03:18:42,752 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:42,753 INFO L425 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:42,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:42,954 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:42,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1295471338, now seen corresponding path program 31 times [2020-04-18 03:18:42,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:42,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012023374] [2020-04-18 03:18:42,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:43,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012023374] [2020-04-18 03:18:43,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421607693] [2020-04-18 03:18:43,439 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-04-18 03:18:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:43,534 INFO L264 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 25 conjunts are in the unsatisfiable core [2020-04-18 03:18:43,537 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:43,603 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:43,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:43,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-04-18 03:18:43,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327550453] [2020-04-18 03:18:43,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 03:18:43,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:43,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 03:18:43,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-04-18 03:18:43,650 INFO L87 Difference]: Start difference. First operand 1928 states and 5168 transitions. Second operand 25 states. [2020-04-18 03:18:44,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:44,244 INFO L93 Difference]: Finished difference Result 2768 states and 7012 transitions. [2020-04-18 03:18:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-04-18 03:18:44,244 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 115 [2020-04-18 03:18:44,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:44,248 INFO L225 Difference]: With dead ends: 2768 [2020-04-18 03:18:44,248 INFO L226 Difference]: Without dead ends: 2498 [2020-04-18 03:18:44,249 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=599, Invalid=1471, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 03:18:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2020-04-18 03:18:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2015. [2020-04-18 03:18:44,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2015 states. [2020-04-18 03:18:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 5378 transitions. [2020-04-18 03:18:44,275 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 5378 transitions. Word has length 115 [2020-04-18 03:18:44,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:44,276 INFO L479 AbstractCegarLoop]: Abstraction has 2015 states and 5378 transitions. [2020-04-18 03:18:44,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 03:18:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 5378 transitions. [2020-04-18 03:18:44,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-04-18 03:18:44,278 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:44,278 INFO L425 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:44,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:44,479 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:44,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:44,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1643641960, now seen corresponding path program 32 times [2020-04-18 03:18:44,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:44,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744173400] [2020-04-18 03:18:44,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 03:18:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:44,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744173400] [2020-04-18 03:18:44,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118709785] [2020-04-18 03:18:44,816 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-04-18 03:18:44,883 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 03:18:44,883 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 03:18:44,885 INFO L264 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 25 conjunts are in the unsatisfiable core [2020-04-18 03:18:44,887 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 03:18:44,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:44,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 03:18:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 03:18:44,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 03:18:44,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-04-18 03:18:44,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347679753] [2020-04-18 03:18:44,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-04-18 03:18:44,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 03:18:44,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-04-18 03:18:44,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2020-04-18 03:18:44,961 INFO L87 Difference]: Start difference. First operand 2015 states and 5378 transitions. Second operand 26 states. [2020-04-18 03:18:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 03:18:46,610 INFO L93 Difference]: Finished difference Result 4775 states and 12340 transitions. [2020-04-18 03:18:46,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-04-18 03:18:46,610 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 115 [2020-04-18 03:18:46,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 03:18:46,615 INFO L225 Difference]: With dead ends: 4775 [2020-04-18 03:18:46,616 INFO L226 Difference]: Without dead ends: 4233 [2020-04-18 03:18:46,618 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1326, Invalid=3644, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 03:18:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2020-04-18 03:18:46,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 3005. [2020-04-18 03:18:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3005 states. [2020-04-18 03:18:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3005 states to 3005 states and 8348 transitions. [2020-04-18 03:18:46,681 INFO L78 Accepts]: Start accepts. Automaton has 3005 states and 8348 transitions. Word has length 115 [2020-04-18 03:18:46,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 03:18:46,682 INFO L479 AbstractCegarLoop]: Abstraction has 3005 states and 8348 transitions. [2020-04-18 03:18:46,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-04-18 03:18:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3005 states and 8348 transitions. [2020-04-18 03:18:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-04-18 03:18:46,689 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 03:18:46,689 INFO L425 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 03:18:46,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 03:18:46,893 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 03:18:46,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 03:18:46,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1449559448, now seen corresponding path program 33 times [2020-04-18 03:18:46,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 03:18:46,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691558241] [2020-04-18 03:18:46,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 03:18:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:18:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 03:18:47,040 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 03:18:47,040 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 03:18:47,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:18:47 BasicIcfg [2020-04-18 03:18:47,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 03:18:47,226 INFO L168 Benchmark]: Toolchain (without parser) took 45682.35 ms. Allocated memory was 146.3 MB in the beginning and 648.0 MB in the end (delta: 501.7 MB). Free memory was 102.1 MB in the beginning and 462.4 MB in the end (delta: -360.2 MB). Peak memory consumption was 141.5 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:47,227 INFO L168 Benchmark]: CDTParser took 1.45 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 03:18:47,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.01 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 100.2 MB in the beginning and 160.8 MB in the end (delta: -60.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:47,228 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.72 ms. Allocated memory is still 202.9 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:47,228 INFO L168 Benchmark]: Boogie Preprocessor took 26.25 ms. Allocated memory is still 202.9 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:47,229 INFO L168 Benchmark]: RCFGBuilder took 425.93 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 137.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:47,230 INFO L168 Benchmark]: TraceAbstraction took 44490.43 ms. Allocated memory was 202.9 MB in the beginning and 648.0 MB in the end (delta: 445.1 MB). Free memory was 136.5 MB in the beginning and 462.4 MB in the end (delta: -325.9 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. [2020-04-18 03:18:47,232 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.45 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.01 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 100.2 MB in the beginning and 160.8 MB in the end (delta: -60.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.72 ms. Allocated memory is still 202.9 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.25 ms. Allocated memory is still 202.9 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.93 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 137.1 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44490.43 ms. Allocated memory was 202.9 MB in the beginning and 648.0 MB in the end (delta: 445.1 MB). Free memory was 136.5 MB in the beginning and 462.4 MB in the end (delta: -325.9 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 703]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L675] 0 int i = 3, j = 6; VAL [i=3, j=6] [L693] 0 pthread_t id1, id2; VAL [i=3, j=6] [L694] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L677] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L677] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L695] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L677] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L697] 0 int condI = i >= (2*10 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L685] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L685] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=0] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L685] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=1] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L685] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L677] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=2] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=2] [L685] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L677] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=3] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=3] [L685] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L677] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L685] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=4] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L677] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=5] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L685] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L677] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=6] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L685] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L677] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=7] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L685] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=7] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L677] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=8] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=8] [L685] COND TRUE 2 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L677] COND TRUE 1 k < 10 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L700] 0 int condJ = j >= (2*10 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L702] COND TRUE 0 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L703] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 44.1s, OverallIterations: 43, TraceHistogramMax: 10, AutomataDifference: 21.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3510 SDtfs, 18848 SDslu, 25724 SDs, 0 SdLazy, 5171 SolverSat, 2233 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3919 GetRequests, 2594 SyntacticMatches, 22 SemanticMatches, 1303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12653 ImplicationChecksByTransitivity, 21.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3005occurred in iteration=42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 42 MinimizatonAttempts, 27433 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 5520 NumberOfCodeBlocks, 5520 NumberOfCodeBlocksAsserted, 187 NumberOfCheckSat, 5323 ConstructedInterpolants, 0 QuantifiedInterpolants, 1846171 SizeOfPredicates, 482 NumberOfNonLiveVariables, 5358 ConjunctsInSsa, 588 ConjunctsInUnsatCore, 77 InterpolantComputations, 7 PerfectInterpolantSequences, 8/8724 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 proved your program to be incorrect! Received shutdown request...