/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread/triangular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 00:01:02,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 00:01:02,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 00:01:02,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 00:01:02,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 00:01:02,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 00:01:02,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 00:01:02,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 00:01:02,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 00:01:02,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 00:01:02,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 00:01:02,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 00:01:02,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 00:01:02,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 00:01:02,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 00:01:02,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 00:01:02,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 00:01:02,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 00:01:02,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 00:01:02,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 00:01:02,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 00:01:02,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 00:01:02,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 00:01:02,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 00:01:02,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 00:01:02,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 00:01:02,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 00:01:02,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 00:01:02,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 00:01:02,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 00:01:02,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 00:01:02,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 00:01:02,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 00:01:02,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 00:01:02,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 00:01:02,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 00:01:02,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 00:01:02,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 00:01:02,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 00:01:02,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 00:01:02,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 00:01:02,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 00:01:02,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 00:01:02,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 00:01:02,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 00:01:02,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 00:01:02,268 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 00:01:02,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 00:01:02,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 00:01:02,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 00:01:02,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 00:01:02,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 00:01:02,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 00:01:02,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 00:01:02,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 00:01:02,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 00:01:02,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 00:01:02,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 00:01:02,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 00:01:02,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 00:01:02,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 00:01:02,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 00:01:02,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 00:01:02,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 00:01:02,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 00:01:02,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 00:01:02,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 00:01:02,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 00:01:02,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 00:01:02,280 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 00:01:02,280 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 00:01:02,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 00:01:02,281 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 00:01:02,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 00:01:02,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 00:01:02,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 00:01:02,598 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 00:01:02,598 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 00:01:02,599 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-2.i [2020-10-06 00:01:02,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e3b6f33/5c95c2a5d1a243d1a8434779d7013b2d/FLAG7030bcfc1 [2020-10-06 00:01:03,193 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 00:01:03,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i [2020-10-06 00:01:03,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e3b6f33/5c95c2a5d1a243d1a8434779d7013b2d/FLAG7030bcfc1 [2020-10-06 00:01:03,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e3b6f33/5c95c2a5d1a243d1a8434779d7013b2d [2020-10-06 00:01:03,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 00:01:03,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 00:01:03,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 00:01:03,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 00:01:03,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 00:01:03,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:01:03" (1/1) ... [2020-10-06 00:01:03,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac68a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:03, skipping insertion in model container [2020-10-06 00:01:03,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:01:03" (1/1) ... [2020-10-06 00:01:03,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 00:01:03,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 00:01:04,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:01:04,081 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 00:01:04,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:01:04,231 INFO L208 MainTranslator]: Completed translation [2020-10-06 00:01:04,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04 WrapperNode [2020-10-06 00:01:04,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 00:01:04,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 00:01:04,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 00:01:04,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 00:01:04,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04" (1/1) ... [2020-10-06 00:01:04,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04" (1/1) ... [2020-10-06 00:01:04,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 00:01:04,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 00:01:04,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 00:01:04,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 00:01:04,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04" (1/1) ... [2020-10-06 00:01:04,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04" (1/1) ... [2020-10-06 00:01:04,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04" (1/1) ... [2020-10-06 00:01:04,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04" (1/1) ... [2020-10-06 00:01:04,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04" (1/1) ... [2020-10-06 00:01:04,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04" (1/1) ... [2020-10-06 00:01:04,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04" (1/1) ... [2020-10-06 00:01:04,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 00:01:04,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 00:01:04,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 00:01:04,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 00:01:04,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 00:01:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-06 00:01:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-06 00:01:04,376 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-06 00:01:04,376 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-06 00:01:04,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 00:01:04,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 00:01:04,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 00:01:04,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 00:01:04,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 00:01:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 00:01:04,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 00:01:04,381 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 00:01:04,742 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 00:01:04,742 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-06 00:01:04,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:01:04 BoogieIcfgContainer [2020-10-06 00:01:04,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 00:01:04,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 00:01:04,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 00:01:04,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 00:01:04,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 12:01:03" (1/3) ... [2020-10-06 00:01:04,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4104f92c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:01:04, skipping insertion in model container [2020-10-06 00:01:04,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:01:04" (2/3) ... [2020-10-06 00:01:04,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4104f92c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:01:04, skipping insertion in model container [2020-10-06 00:01:04,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:01:04" (3/3) ... [2020-10-06 00:01:04,765 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2020-10-06 00:01:04,776 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 00:01:04,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 00:01:04,786 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 00:01:04,787 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 00:01:04,812 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,812 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,812 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,813 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,817 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,818 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,818 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,818 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,818 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,819 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,819 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,819 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,820 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,820 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,820 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,821 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,821 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,821 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,822 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,822 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,822 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,822 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,823 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,823 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,824 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,824 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,824 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,824 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,828 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,828 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,829 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,829 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,829 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,829 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,834 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,835 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,835 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,835 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,835 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,836 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:01:04,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-06 00:01:04,864 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:01:04,865 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:01:04,865 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:01:04,865 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:01:04,865 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:01:04,865 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:01:04,865 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:01:04,866 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:01:04,880 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 55 transitions, 120 flow [2020-10-06 00:01:04,882 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 120 flow [2020-10-06 00:01:04,921 INFO L129 PetriNetUnfolder]: 5/53 cut-off events. [2020-10-06 00:01:04,921 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:01:04,927 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 5/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-06 00:01:04,930 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 120 flow [2020-10-06 00:01:04,948 INFO L129 PetriNetUnfolder]: 5/53 cut-off events. [2020-10-06 00:01:04,948 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:01:04,949 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 5/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-06 00:01:04,951 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 924 [2020-10-06 00:01:04,953 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:01:06,048 INFO L206 etLargeBlockEncoding]: Checked pairs total: 851 [2020-10-06 00:01:06,049 INFO L214 etLargeBlockEncoding]: Total number of compositions: 42 [2020-10-06 00:01:06,053 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 40 flow [2020-10-06 00:01:06,065 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-06 00:01:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-06 00:01:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-06 00:01:06,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:06,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-06 00:01:06,076 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:06,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1798862799, now seen corresponding path program 1 times [2020-10-06 00:01:06,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:06,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933047638] [2020-10-06 00:01:06,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:06,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933047638] [2020-10-06 00:01:06,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:01:06,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:01:06,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2133601247] [2020-10-06 00:01:06,337 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:06,341 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:06,355 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-06 00:01:06,355 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:06,360 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:01:06,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:01:06,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:06,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:01:06,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:01:06,379 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-06 00:01:06,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:06,442 INFO L93 Difference]: Finished difference Result 75 states and 190 transitions. [2020-10-06 00:01:06,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 00:01:06,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-06 00:01:06,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:06,456 INFO L225 Difference]: With dead ends: 75 [2020-10-06 00:01:06,456 INFO L226 Difference]: Without dead ends: 42 [2020-10-06 00:01:06,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:01:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-06 00:01:06,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-06 00:01:06,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 00:01:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 98 transitions. [2020-10-06 00:01:06,500 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 98 transitions. Word has length 6 [2020-10-06 00:01:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:06,500 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 98 transitions. [2020-10-06 00:01:06,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:01:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 98 transitions. [2020-10-06 00:01:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 00:01:06,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:06,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:06,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 00:01:06,503 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:06,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1777031324, now seen corresponding path program 1 times [2020-10-06 00:01:06,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:06,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971900065] [2020-10-06 00:01:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:06,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971900065] [2020-10-06 00:01:06,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:01:06,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:01:06,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1874608570] [2020-10-06 00:01:06,593 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:06,594 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:06,597 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-10-06 00:01:06,597 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:06,618 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:01:06,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 00:01:06,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:06,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 00:01:06,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:01:06,621 INFO L87 Difference]: Start difference. First operand 42 states and 98 transitions. Second operand 5 states. [2020-10-06 00:01:06,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:06,676 INFO L93 Difference]: Finished difference Result 56 states and 130 transitions. [2020-10-06 00:01:06,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 00:01:06,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-06 00:01:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:06,678 INFO L225 Difference]: With dead ends: 56 [2020-10-06 00:01:06,679 INFO L226 Difference]: Without dead ends: 50 [2020-10-06 00:01:06,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-06 00:01:06,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-06 00:01:06,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-06 00:01:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 00:01:06,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions. [2020-10-06 00:01:06,688 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8 [2020-10-06 00:01:06,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:06,689 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 100 transitions. [2020-10-06 00:01:06,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 00:01:06,689 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions. [2020-10-06 00:01:06,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 00:01:06,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:06,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:06,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 00:01:06,691 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:06,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:06,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1669374595, now seen corresponding path program 1 times [2020-10-06 00:01:06,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:06,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277153964] [2020-10-06 00:01:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:06,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277153964] [2020-10-06 00:01:06,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:01:06,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 00:01:06,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1535056802] [2020-10-06 00:01:06,770 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:06,771 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:06,775 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-10-06 00:01:06,775 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:06,800 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:06,800 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:06,825 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [466#(and (< ~i~0 16) (<= ~j~0 8))] [2020-10-06 00:01:06,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 00:01:06,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:06,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 00:01:06,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-06 00:01:06,827 INFO L87 Difference]: Start difference. First operand 42 states and 100 transitions. Second operand 7 states. [2020-10-06 00:01:06,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:06,949 INFO L93 Difference]: Finished difference Result 62 states and 148 transitions. [2020-10-06 00:01:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-06 00:01:06,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-06 00:01:06,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:06,951 INFO L225 Difference]: With dead ends: 62 [2020-10-06 00:01:06,951 INFO L226 Difference]: Without dead ends: 44 [2020-10-06 00:01:06,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-06 00:01:06,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-06 00:01:06,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2020-10-06 00:01:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-06 00:01:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 82 transitions. [2020-10-06 00:01:06,958 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 82 transitions. Word has length 10 [2020-10-06 00:01:06,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:06,959 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 82 transitions. [2020-10-06 00:01:06,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 00:01:06,959 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 82 transitions. [2020-10-06 00:01:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:01:06,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:06,960 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:06,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 00:01:06,961 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:06,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:06,961 INFO L82 PathProgramCache]: Analyzing trace with hash 976950295, now seen corresponding path program 2 times [2020-10-06 00:01:06,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:06,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26746217] [2020-10-06 00:01:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:07,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26746217] [2020-10-06 00:01:07,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44404703] [2020-10-06 00:01:07,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:07,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:07,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:07,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-06 00:01:07,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:07,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:07,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-06 00:01:07,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1319733455] [2020-10-06 00:01:07,130 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:07,132 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:07,134 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-10-06 00:01:07,135 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:07,142 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:07,142 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:07,163 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:07,163 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:07,178 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:07,179 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:07,196 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:07,196 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:07,204 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [644#(and (< ~i~0 16) (<= ~j~0 4))] [2020-10-06 00:01:07,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-06 00:01:07,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:07,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-06 00:01:07,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-06 00:01:07,206 INFO L87 Difference]: Start difference. First operand 34 states and 82 transitions. Second operand 8 states. [2020-10-06 00:01:07,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:07,367 INFO L93 Difference]: Finished difference Result 56 states and 131 transitions. [2020-10-06 00:01:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-06 00:01:07,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-06 00:01:07,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:07,369 INFO L225 Difference]: With dead ends: 56 [2020-10-06 00:01:07,369 INFO L226 Difference]: Without dead ends: 50 [2020-10-06 00:01:07,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-06 00:01:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-06 00:01:07,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-06 00:01:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 00:01:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 104 transitions. [2020-10-06 00:01:07,379 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 104 transitions. Word has length 11 [2020-10-06 00:01:07,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:07,380 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 104 transitions. [2020-10-06 00:01:07,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-06 00:01:07,382 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 104 transitions. [2020-10-06 00:01:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:01:07,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:07,383 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:07,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:07,597 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:07,598 INFO L82 PathProgramCache]: Analyzing trace with hash 993527545, now seen corresponding path program 3 times [2020-10-06 00:01:07,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:07,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631127310] [2020-10-06 00:01:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:07,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631127310] [2020-10-06 00:01:07,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851210364] [2020-10-06 00:01:07,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:07,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-06 00:01:07,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:07,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-06 00:01:07,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:07,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:07,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-06 00:01:07,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [587286600] [2020-10-06 00:01:07,748 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:07,749 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:07,751 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-10-06 00:01:07,752 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:07,768 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:07,768 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:07,783 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [832#(and (< ~i~0 16) (<= ~j~0 6))] [2020-10-06 00:01:07,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-06 00:01:07,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:07,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-06 00:01:07,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-06 00:01:07,784 INFO L87 Difference]: Start difference. First operand 42 states and 104 transitions. Second operand 8 states. [2020-10-06 00:01:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:07,992 INFO L93 Difference]: Finished difference Result 66 states and 159 transitions. [2020-10-06 00:01:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-06 00:01:07,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-06 00:01:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:07,994 INFO L225 Difference]: With dead ends: 66 [2020-10-06 00:01:07,994 INFO L226 Difference]: Without dead ends: 54 [2020-10-06 00:01:07,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-06 00:01:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-06 00:01:08,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2020-10-06 00:01:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-06 00:01:08,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 91 transitions. [2020-10-06 00:01:08,003 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 91 transitions. Word has length 11 [2020-10-06 00:01:08,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:08,004 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 91 transitions. [2020-10-06 00:01:08,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-06 00:01:08,004 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 91 transitions. [2020-10-06 00:01:08,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:01:08,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:08,006 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:08,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:08,208 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:08,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:08,208 INFO L82 PathProgramCache]: Analyzing trace with hash -2048766974, now seen corresponding path program 4 times [2020-10-06 00:01:08,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:08,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484006112] [2020-10-06 00:01:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:08,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484006112] [2020-10-06 00:01:08,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165233243] [2020-10-06 00:01:08,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:08,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:08,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:08,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 00:01:08,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:08,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:08,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-06 00:01:08,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1914022012] [2020-10-06 00:01:08,369 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:08,371 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:08,374 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-06 00:01:08,374 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:08,389 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:08,389 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:08,410 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1034#(and (< ~i~0 16) (<= ~j~0 8))] [2020-10-06 00:01:08,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 00:01:08,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:08,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 00:01:08,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-06 00:01:08,411 INFO L87 Difference]: Start difference. First operand 38 states and 91 transitions. Second operand 9 states. [2020-10-06 00:01:08,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:08,563 INFO L93 Difference]: Finished difference Result 64 states and 149 transitions. [2020-10-06 00:01:08,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-06 00:01:08,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-06 00:01:08,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:08,564 INFO L225 Difference]: With dead ends: 64 [2020-10-06 00:01:08,564 INFO L226 Difference]: Without dead ends: 58 [2020-10-06 00:01:08,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-06 00:01:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-06 00:01:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2020-10-06 00:01:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-06 00:01:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 112 transitions. [2020-10-06 00:01:08,571 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 112 transitions. Word has length 12 [2020-10-06 00:01:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:08,572 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 112 transitions. [2020-10-06 00:01:08,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 00:01:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 112 transitions. [2020-10-06 00:01:08,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:01:08,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:08,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:08,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:08,786 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:08,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:08,787 INFO L82 PathProgramCache]: Analyzing trace with hash -2032189724, now seen corresponding path program 5 times [2020-10-06 00:01:08,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:08,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313852395] [2020-10-06 00:01:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:08,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313852395] [2020-10-06 00:01:08,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435648923] [2020-10-06 00:01:08,871 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:08,930 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:08,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:08,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-06 00:01:08,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:08,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:08,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-06 00:01:08,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1605647024] [2020-10-06 00:01:08,950 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:08,951 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:08,954 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-10-06 00:01:08,954 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:08,972 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:08,973 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:09,013 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1244#(and (< ~i~0 16) (<= ~j~0 10))] [2020-10-06 00:01:09,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 00:01:09,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:09,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 00:01:09,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-06 00:01:09,014 INFO L87 Difference]: Start difference. First operand 45 states and 112 transitions. Second operand 9 states. [2020-10-06 00:01:09,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:09,232 INFO L93 Difference]: Finished difference Result 63 states and 155 transitions. [2020-10-06 00:01:09,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-06 00:01:09,232 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-06 00:01:09,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:09,233 INFO L225 Difference]: With dead ends: 63 [2020-10-06 00:01:09,233 INFO L226 Difference]: Without dead ends: 51 [2020-10-06 00:01:09,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-06 00:01:09,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-06 00:01:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-10-06 00:01:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-06 00:01:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 92 transitions. [2020-10-06 00:01:09,240 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 92 transitions. Word has length 12 [2020-10-06 00:01:09,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:09,240 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 92 transitions. [2020-10-06 00:01:09,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 00:01:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 92 transitions. [2020-10-06 00:01:09,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 00:01:09,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:09,243 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:09,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:09,459 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:09,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1748588394, now seen corresponding path program 6 times [2020-10-06 00:01:09,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:09,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867752388] [2020-10-06 00:01:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:09,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867752388] [2020-10-06 00:01:09,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517688054] [2020-10-06 00:01:09,546 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:09,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-06 00:01:09,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:09,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-06 00:01:09,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:09,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:09,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 00:01:09,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [781857002] [2020-10-06 00:01:09,636 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:09,638 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:09,641 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 33 transitions. [2020-10-06 00:01:09,641 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:09,653 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:09,653 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:09,672 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:09,673 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:09,683 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:09,684 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:09,694 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:09,694 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:09,702 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1447#(and (< ~i~0 16) (<= ~j~0 4))] [2020-10-06 00:01:09,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-06 00:01:09,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:09,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-06 00:01:09,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-06 00:01:09,703 INFO L87 Difference]: Start difference. First operand 38 states and 92 transitions. Second operand 10 states. [2020-10-06 00:01:09,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:09,849 INFO L93 Difference]: Finished difference Result 60 states and 140 transitions. [2020-10-06 00:01:09,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 00:01:09,850 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-06 00:01:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:09,851 INFO L225 Difference]: With dead ends: 60 [2020-10-06 00:01:09,851 INFO L226 Difference]: Without dead ends: 54 [2020-10-06 00:01:09,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-06 00:01:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-06 00:01:09,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2020-10-06 00:01:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-06 00:01:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 112 transitions. [2020-10-06 00:01:09,857 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 112 transitions. Word has length 13 [2020-10-06 00:01:09,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:09,857 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 112 transitions. [2020-10-06 00:01:09,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-06 00:01:09,857 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 112 transitions. [2020-10-06 00:01:09,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 00:01:09,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:09,858 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:10,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:10,070 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:10,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1297246968, now seen corresponding path program 7 times [2020-10-06 00:01:10,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:10,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120742511] [2020-10-06 00:01:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:10,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120742511] [2020-10-06 00:01:10,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314626059] [2020-10-06 00:01:10,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:10,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-06 00:01:10,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:10,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:10,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 00:01:10,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [541208517] [2020-10-06 00:01:10,228 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:10,229 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:10,260 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-06 00:01:10,261 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:10,302 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:10,303 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:10,326 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1659#(and (< ~i~0 16) (<= ~j~0 6))] [2020-10-06 00:01:10,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-06 00:01:10,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:10,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-06 00:01:10,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-06 00:01:10,329 INFO L87 Difference]: Start difference. First operand 46 states and 112 transitions. Second operand 10 states. [2020-10-06 00:01:10,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:10,568 INFO L93 Difference]: Finished difference Result 74 states and 171 transitions. [2020-10-06 00:01:10,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-06 00:01:10,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-06 00:01:10,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:10,570 INFO L225 Difference]: With dead ends: 74 [2020-10-06 00:01:10,570 INFO L226 Difference]: Without dead ends: 68 [2020-10-06 00:01:10,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:01:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-06 00:01:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2020-10-06 00:01:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-06 00:01:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 120 transitions. [2020-10-06 00:01:10,576 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 120 transitions. Word has length 13 [2020-10-06 00:01:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:10,576 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 120 transitions. [2020-10-06 00:01:10,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-06 00:01:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 120 transitions. [2020-10-06 00:01:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 00:01:10,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:10,579 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:10,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:10,790 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:10,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:10,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1313824218, now seen corresponding path program 8 times [2020-10-06 00:01:10,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:10,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131897096] [2020-10-06 00:01:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:10,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131897096] [2020-10-06 00:01:10,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102520622] [2020-10-06 00:01:10,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:10,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:10,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:10,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-06 00:01:10,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:10,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:10,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-06 00:01:10,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1661821836] [2020-10-06 00:01:10,936 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:10,937 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:10,939 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-10-06 00:01:10,939 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:10,953 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:10,954 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:10,971 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1897#(and (< ~i~0 16) (<= ~j~0 8))] [2020-10-06 00:01:10,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-06 00:01:10,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:10,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-06 00:01:10,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-06 00:01:10,973 INFO L87 Difference]: Start difference. First operand 48 states and 120 transitions. Second operand 10 states. [2020-10-06 00:01:11,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:11,234 INFO L93 Difference]: Finished difference Result 74 states and 179 transitions. [2020-10-06 00:01:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-06 00:01:11,235 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-06 00:01:11,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:11,236 INFO L225 Difference]: With dead ends: 74 [2020-10-06 00:01:11,236 INFO L226 Difference]: Without dead ends: 62 [2020-10-06 00:01:11,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2020-10-06 00:01:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-06 00:01:11,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2020-10-06 00:01:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 00:01:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 101 transitions. [2020-10-06 00:01:11,242 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 101 transitions. Word has length 13 [2020-10-06 00:01:11,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:11,242 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 101 transitions. [2020-10-06 00:01:11,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-06 00:01:11,242 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 101 transitions. [2020-10-06 00:01:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 00:01:11,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:11,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:11,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-06 00:01:11,455 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:11,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:11,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1770024511, now seen corresponding path program 9 times [2020-10-06 00:01:11,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:11,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712178796] [2020-10-06 00:01:11,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:11,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712178796] [2020-10-06 00:01:11,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772014060] [2020-10-06 00:01:11,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:11,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-06 00:01:11,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:11,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-06 00:01:11,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:11,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:11,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-06 00:01:11,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1974807804] [2020-10-06 00:01:11,657 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:11,658 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:11,686 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-10-06 00:01:11,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:11,714 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:11,714 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:11,727 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2131#(and (< ~i~0 16) (<= ~j~0 8))] [2020-10-06 00:01:11,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 00:01:11,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:11,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 00:01:11,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-06 00:01:11,729 INFO L87 Difference]: Start difference. First operand 42 states and 101 transitions. Second operand 11 states. [2020-10-06 00:01:11,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:11,942 INFO L93 Difference]: Finished difference Result 70 states and 162 transitions. [2020-10-06 00:01:11,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-06 00:01:11,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-06 00:01:11,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:11,944 INFO L225 Difference]: With dead ends: 70 [2020-10-06 00:01:11,944 INFO L226 Difference]: Without dead ends: 64 [2020-10-06 00:01:11,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-06 00:01:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-06 00:01:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-10-06 00:01:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-06 00:01:11,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 120 transitions. [2020-10-06 00:01:11,949 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 120 transitions. Word has length 14 [2020-10-06 00:01:11,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:11,949 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 120 transitions. [2020-10-06 00:01:11,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 00:01:11,949 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 120 transitions. [2020-10-06 00:01:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 00:01:11,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:11,950 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:12,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-06 00:01:12,163 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:12,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1275810851, now seen corresponding path program 10 times [2020-10-06 00:01:12,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:12,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067821765] [2020-10-06 00:01:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:12,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067821765] [2020-10-06 00:01:12,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004153577] [2020-10-06 00:01:12,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:12,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:12,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:12,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-06 00:01:12,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:12,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:12,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-06 00:01:12,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1059634911] [2020-10-06 00:01:12,320 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:12,321 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:12,323 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-06 00:01:12,323 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:12,339 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:12,339 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:12,354 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2367#(and (< ~i~0 16) (<= ~j~0 10))] [2020-10-06 00:01:12,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 00:01:12,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:12,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 00:01:12,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-06 00:01:12,355 INFO L87 Difference]: Start difference. First operand 49 states and 120 transitions. Second operand 11 states. [2020-10-06 00:01:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:12,613 INFO L93 Difference]: Finished difference Result 69 states and 163 transitions. [2020-10-06 00:01:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-06 00:01:12,614 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-06 00:01:12,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:12,615 INFO L225 Difference]: With dead ends: 69 [2020-10-06 00:01:12,615 INFO L226 Difference]: Without dead ends: 63 [2020-10-06 00:01:12,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2020-10-06 00:01:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-06 00:01:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-10-06 00:01:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-06 00:01:12,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 128 transitions. [2020-10-06 00:01:12,619 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 128 transitions. Word has length 14 [2020-10-06 00:01:12,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:12,620 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 128 transitions. [2020-10-06 00:01:12,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 00:01:12,620 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 128 transitions. [2020-10-06 00:01:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 00:01:12,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:12,621 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:12,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:12,831 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:12,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1292388101, now seen corresponding path program 11 times [2020-10-06 00:01:12,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:12,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466849191] [2020-10-06 00:01:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:12,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466849191] [2020-10-06 00:01:12,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284961354] [2020-10-06 00:01:12,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:12,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-06 00:01:12,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:12,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-06 00:01:12,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:12,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:12,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-06 00:01:13,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [124712259] [2020-10-06 00:01:13,000 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:13,002 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:13,005 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-10-06 00:01:13,006 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:13,025 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:13,025 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:13,046 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2610#(and (< ~i~0 16) (<= ~j~0 12))] [2020-10-06 00:01:13,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-06 00:01:13,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:13,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-06 00:01:13,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-06 00:01:13,048 INFO L87 Difference]: Start difference. First operand 51 states and 128 transitions. Second operand 11 states. [2020-10-06 00:01:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:13,393 INFO L93 Difference]: Finished difference Result 69 states and 171 transitions. [2020-10-06 00:01:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-06 00:01:13,393 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-06 00:01:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:13,394 INFO L225 Difference]: With dead ends: 69 [2020-10-06 00:01:13,394 INFO L226 Difference]: Without dead ends: 57 [2020-10-06 00:01:13,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:01:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-06 00:01:13,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-10-06 00:01:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-06 00:01:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 102 transitions. [2020-10-06 00:01:13,397 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 102 transitions. Word has length 14 [2020-10-06 00:01:13,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:13,397 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 102 transitions. [2020-10-06 00:01:13,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-06 00:01:13,397 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 102 transitions. [2020-10-06 00:01:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:01:13,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:13,398 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:13,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:13,599 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:13,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:13,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1061217963, now seen corresponding path program 12 times [2020-10-06 00:01:13,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:13,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834043222] [2020-10-06 00:01:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:13,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834043222] [2020-10-06 00:01:13,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238817448] [2020-10-06 00:01:13,719 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:13,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-06 00:01:13,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:13,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-06 00:01:13,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:13,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:13,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-06 00:01:13,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1940711992] [2020-10-06 00:01:13,784 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:13,785 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:13,788 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 35 transitions. [2020-10-06 00:01:13,789 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:13,798 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:13,798 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:13,815 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:13,815 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:13,828 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:13,828 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:13,844 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:13,845 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:13,852 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2843#(and (< ~i~0 16) (<= ~j~0 4))] [2020-10-06 00:01:13,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-06 00:01:13,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:13,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-06 00:01:13,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-06 00:01:13,853 INFO L87 Difference]: Start difference. First operand 42 states and 102 transitions. Second operand 12 states. [2020-10-06 00:01:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:14,059 INFO L93 Difference]: Finished difference Result 66 states and 154 transitions. [2020-10-06 00:01:14,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-06 00:01:14,061 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-06 00:01:14,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:14,062 INFO L225 Difference]: With dead ends: 66 [2020-10-06 00:01:14,062 INFO L226 Difference]: Without dead ends: 60 [2020-10-06 00:01:14,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-06 00:01:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-06 00:01:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-10-06 00:01:14,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-06 00:01:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 122 transitions. [2020-10-06 00:01:14,065 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 122 transitions. Word has length 15 [2020-10-06 00:01:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:14,066 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 122 transitions. [2020-10-06 00:01:14,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-06 00:01:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 122 transitions. [2020-10-06 00:01:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:01:14,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:14,067 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:14,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-06 00:01:14,276 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:14,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:14,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1113836343, now seen corresponding path program 13 times [2020-10-06 00:01:14,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:14,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139553514] [2020-10-06 00:01:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:14,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139553514] [2020-10-06 00:01:14,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889276736] [2020-10-06 00:01:14,366 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:14,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-06 00:01:14,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:14,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:14,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-06 00:01:14,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [320418952] [2020-10-06 00:01:14,428 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:14,429 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:14,431 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-10-06 00:01:14,432 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:14,439 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:14,439 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:14,457 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3081#(and (< ~i~0 16) (<= ~j~0 6))] [2020-10-06 00:01:14,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-06 00:01:14,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:14,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-06 00:01:14,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-06 00:01:14,458 INFO L87 Difference]: Start difference. First operand 50 states and 122 transitions. Second operand 12 states. [2020-10-06 00:01:14,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:14,748 INFO L93 Difference]: Finished difference Result 82 states and 188 transitions. [2020-10-06 00:01:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-06 00:01:14,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-06 00:01:14,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:14,749 INFO L225 Difference]: With dead ends: 82 [2020-10-06 00:01:14,749 INFO L226 Difference]: Without dead ends: 76 [2020-10-06 00:01:14,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:01:14,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-06 00:01:14,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 52. [2020-10-06 00:01:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-06 00:01:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 128 transitions. [2020-10-06 00:01:14,753 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 128 transitions. Word has length 15 [2020-10-06 00:01:14,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:14,753 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 128 transitions. [2020-10-06 00:01:14,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-06 00:01:14,754 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 128 transitions. [2020-10-06 00:01:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:01:14,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:14,754 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:14,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-06 00:01:14,955 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:14,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:14,956 INFO L82 PathProgramCache]: Analyzing trace with hash -135295591, now seen corresponding path program 14 times [2020-10-06 00:01:14,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:14,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182780225] [2020-10-06 00:01:14,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:15,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182780225] [2020-10-06 00:01:15,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148682045] [2020-10-06 00:01:15,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:15,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:15,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:15,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-06 00:01:15,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:15,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:15,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-06 00:01:15,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1605079228] [2020-10-06 00:01:15,139 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:15,140 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:15,142 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-10-06 00:01:15,142 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:15,151 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:15,151 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:15,169 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3347#(and (< ~i~0 16) (<= ~j~0 8))] [2020-10-06 00:01:15,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-06 00:01:15,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:15,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-06 00:01:15,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-06 00:01:15,170 INFO L87 Difference]: Start difference. First operand 52 states and 128 transitions. Second operand 12 states. [2020-10-06 00:01:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:15,497 INFO L93 Difference]: Finished difference Result 81 states and 189 transitions. [2020-10-06 00:01:15,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-06 00:01:15,497 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-06 00:01:15,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:15,498 INFO L225 Difference]: With dead ends: 81 [2020-10-06 00:01:15,498 INFO L226 Difference]: Without dead ends: 75 [2020-10-06 00:01:15,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=493, Unknown=0, NotChecked=0, Total=702 [2020-10-06 00:01:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-06 00:01:15,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2020-10-06 00:01:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-06 00:01:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 136 transitions. [2020-10-06 00:01:15,504 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 136 transitions. Word has length 15 [2020-10-06 00:01:15,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:15,504 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 136 transitions. [2020-10-06 00:01:15,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-06 00:01:15,505 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 136 transitions. [2020-10-06 00:01:15,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:01:15,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:15,505 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:15,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-06 00:01:15,706 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:15,707 INFO L82 PathProgramCache]: Analyzing trace with hash -118718341, now seen corresponding path program 15 times [2020-10-06 00:01:15,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:15,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657353045] [2020-10-06 00:01:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:15,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657353045] [2020-10-06 00:01:15,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671843849] [2020-10-06 00:01:15,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:15,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-06 00:01:15,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:15,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-06 00:01:15,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:15,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:15,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-06 00:01:15,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [390650771] [2020-10-06 00:01:15,859 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:15,860 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:15,862 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-10-06 00:01:15,863 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:15,864 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:15,864 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:15,898 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3620#(and (< ~i~0 16) (<= ~j~0 10))] [2020-10-06 00:01:15,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-06 00:01:15,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:15,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-06 00:01:15,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-06 00:01:15,900 INFO L87 Difference]: Start difference. First operand 54 states and 136 transitions. Second operand 12 states. [2020-10-06 00:01:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:16,298 INFO L93 Difference]: Finished difference Result 82 states and 199 transitions. [2020-10-06 00:01:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-06 00:01:16,299 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-06 00:01:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:16,300 INFO L225 Difference]: With dead ends: 82 [2020-10-06 00:01:16,300 INFO L226 Difference]: Without dead ends: 70 [2020-10-06 00:01:16,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:01:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-06 00:01:16,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 46. [2020-10-06 00:01:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-06 00:01:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 111 transitions. [2020-10-06 00:01:16,304 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 111 transitions. Word has length 15 [2020-10-06 00:01:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:16,304 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 111 transitions. [2020-10-06 00:01:16,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-06 00:01:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 111 transitions. [2020-10-06 00:01:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-06 00:01:16,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:16,305 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:16,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:16,518 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:16,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:16,519 INFO L82 PathProgramCache]: Analyzing trace with hash -186489920, now seen corresponding path program 16 times [2020-10-06 00:01:16,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:16,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123662539] [2020-10-06 00:01:16,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:16,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123662539] [2020-10-06 00:01:16,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96978041] [2020-10-06 00:01:16,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:16,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:16,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:16,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-06 00:01:16,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:16,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:16,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-06 00:01:16,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [427765511] [2020-10-06 00:01:16,720 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:16,721 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:16,724 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 32 transitions. [2020-10-06 00:01:16,724 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:16,729 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:16,729 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:16,756 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3886#(and (< ~i~0 16) (<= ~j~0 8))] [2020-10-06 00:01:16,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-06 00:01:16,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:16,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-06 00:01:16,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-06 00:01:16,757 INFO L87 Difference]: Start difference. First operand 46 states and 111 transitions. Second operand 13 states. [2020-10-06 00:01:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:17,001 INFO L93 Difference]: Finished difference Result 78 states and 180 transitions. [2020-10-06 00:01:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-06 00:01:17,002 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-06 00:01:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:17,003 INFO L225 Difference]: With dead ends: 78 [2020-10-06 00:01:17,003 INFO L226 Difference]: Without dead ends: 72 [2020-10-06 00:01:17,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-06 00:01:17,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-06 00:01:17,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2020-10-06 00:01:17,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-06 00:01:17,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 130 transitions. [2020-10-06 00:01:17,006 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 130 transitions. Word has length 16 [2020-10-06 00:01:17,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:17,007 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 130 transitions. [2020-10-06 00:01:17,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-06 00:01:17,008 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 130 transitions. [2020-10-06 00:01:17,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-06 00:01:17,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:17,009 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:17,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-06 00:01:17,219 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:17,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1988564386, now seen corresponding path program 17 times [2020-10-06 00:01:17,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:17,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984905237] [2020-10-06 00:01:17,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:17,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984905237] [2020-10-06 00:01:17,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421025372] [2020-10-06 00:01:17,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:17,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-06 00:01:17,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:17,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-06 00:01:17,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:17,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:17,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-06 00:01:17,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1062640599] [2020-10-06 00:01:17,384 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:17,386 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:17,389 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2020-10-06 00:01:17,389 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:17,392 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:17,393 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:17,421 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4150#(and (< ~i~0 16) (<= ~j~0 10))] [2020-10-06 00:01:17,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-06 00:01:17,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:17,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-06 00:01:17,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-06 00:01:17,422 INFO L87 Difference]: Start difference. First operand 53 states and 130 transitions. Second operand 13 states. [2020-10-06 00:01:17,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:17,678 INFO L93 Difference]: Finished difference Result 75 states and 176 transitions. [2020-10-06 00:01:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-06 00:01:17,680 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-06 00:01:17,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:17,681 INFO L225 Difference]: With dead ends: 75 [2020-10-06 00:01:17,681 INFO L226 Difference]: Without dead ends: 69 [2020-10-06 00:01:17,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-06 00:01:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-06 00:01:17,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2020-10-06 00:01:17,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-06 00:01:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-06 00:01:17,684 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 16 [2020-10-06 00:01:17,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:17,684 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-06 00:01:17,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-06 00:01:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-06 00:01:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-06 00:01:17,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:17,685 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:17,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:17,894 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:17,894 INFO L82 PathProgramCache]: Analyzing trace with hash 739432452, now seen corresponding path program 18 times [2020-10-06 00:01:17,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:17,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431672298] [2020-10-06 00:01:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:17,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431672298] [2020-10-06 00:01:17,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759481247] [2020-10-06 00:01:17,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:18,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-06 00:01:18,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:18,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-06 00:01:18,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:18,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:18,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-06 00:01:18,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2139598252] [2020-10-06 00:01:18,053 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:18,054 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:18,057 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2020-10-06 00:01:18,057 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:18,061 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:18,062 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:18,094 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4419#(and (< ~i~0 16) (<= ~j~0 12))] [2020-10-06 00:01:18,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-06 00:01:18,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:18,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-06 00:01:18,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-06 00:01:18,095 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 13 states. [2020-10-06 00:01:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:18,458 INFO L93 Difference]: Finished difference Result 75 states and 179 transitions. [2020-10-06 00:01:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-06 00:01:18,460 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-06 00:01:18,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:18,461 INFO L225 Difference]: With dead ends: 75 [2020-10-06 00:01:18,461 INFO L226 Difference]: Without dead ends: 69 [2020-10-06 00:01:18,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2020-10-06 00:01:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-06 00:01:18,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2020-10-06 00:01:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-06 00:01:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 144 transitions. [2020-10-06 00:01:18,464 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 144 transitions. Word has length 16 [2020-10-06 00:01:18,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:18,464 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 144 transitions. [2020-10-06 00:01:18,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-06 00:01:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 144 transitions. [2020-10-06 00:01:18,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-06 00:01:18,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:18,465 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:18,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:18,666 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:18,667 INFO L82 PathProgramCache]: Analyzing trace with hash 756009702, now seen corresponding path program 19 times [2020-10-06 00:01:18,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:18,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067938856] [2020-10-06 00:01:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:18,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067938856] [2020-10-06 00:01:18,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592777118] [2020-10-06 00:01:18,756 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:18,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-06 00:01:18,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:18,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:18,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-06 00:01:18,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1670721165] [2020-10-06 00:01:18,837 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:18,839 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:18,842 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2020-10-06 00:01:18,842 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:18,845 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:18,846 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:18,881 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4696#(and (< ~i~0 16) (<= ~j~0 14))] [2020-10-06 00:01:18,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-06 00:01:18,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:18,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-06 00:01:18,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-06 00:01:18,882 INFO L87 Difference]: Start difference. First operand 57 states and 144 transitions. Second operand 13 states. [2020-10-06 00:01:19,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:19,301 INFO L93 Difference]: Finished difference Result 75 states and 187 transitions. [2020-10-06 00:01:19,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-06 00:01:19,301 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-06 00:01:19,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:19,302 INFO L225 Difference]: With dead ends: 75 [2020-10-06 00:01:19,302 INFO L226 Difference]: Without dead ends: 63 [2020-10-06 00:01:19,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=594, Unknown=0, NotChecked=0, Total=870 [2020-10-06 00:01:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-06 00:01:19,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2020-10-06 00:01:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-06 00:01:19,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 112 transitions. [2020-10-06 00:01:19,306 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 112 transitions. Word has length 16 [2020-10-06 00:01:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:19,306 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 112 transitions. [2020-10-06 00:01:19,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-06 00:01:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 112 transitions. [2020-10-06 00:01:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:01:19,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:19,307 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:19,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-06 00:01:19,508 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:19,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:19,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1923197356, now seen corresponding path program 20 times [2020-10-06 00:01:19,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:19,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701410100] [2020-10-06 00:01:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:19,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701410100] [2020-10-06 00:01:19,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198963155] [2020-10-06 00:01:19,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:19,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 00:01:19,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:19,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-06 00:01:19,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:19,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:19,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-06 00:01:19,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1627945208] [2020-10-06 00:01:19,696 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:19,698 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:19,718 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-10-06 00:01:19,718 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:19,732 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:19,733 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:19,757 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:19,757 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:19,770 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:19,770 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:19,780 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:19,780 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:19,787 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4959#(and (< ~i~0 16) (<= ~j~0 4))] [2020-10-06 00:01:19,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-06 00:01:19,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:19,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-06 00:01:19,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-06 00:01:19,788 INFO L87 Difference]: Start difference. First operand 46 states and 112 transitions. Second operand 14 states. [2020-10-06 00:01:20,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:20,051 INFO L93 Difference]: Finished difference Result 72 states and 168 transitions. [2020-10-06 00:01:20,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-06 00:01:20,051 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-06 00:01:20,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:20,052 INFO L225 Difference]: With dead ends: 72 [2020-10-06 00:01:20,052 INFO L226 Difference]: Without dead ends: 66 [2020-10-06 00:01:20,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2020-10-06 00:01:20,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-06 00:01:20,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-10-06 00:01:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-06 00:01:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 132 transitions. [2020-10-06 00:01:20,056 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 132 transitions. Word has length 17 [2020-10-06 00:01:20,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:20,056 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 132 transitions. [2020-10-06 00:01:20,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-06 00:01:20,057 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 132 transitions. [2020-10-06 00:01:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:01:20,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:20,057 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:20,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:20,268 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:20,268 INFO L82 PathProgramCache]: Analyzing trace with hash 949884854, now seen corresponding path program 21 times [2020-10-06 00:01:20,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:20,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740206019] [2020-10-06 00:01:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:20,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740206019] [2020-10-06 00:01:20,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265284833] [2020-10-06 00:01:20,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:20,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-06 00:01:20,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:20,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-06 00:01:20,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:20,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:20,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-06 00:01:20,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2055539741] [2020-10-06 00:01:20,463 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:20,464 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:20,467 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-06 00:01:20,467 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:20,469 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:20,469 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:20,500 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5223#(and (< ~i~0 16) (<= ~j~0 6))] [2020-10-06 00:01:20,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-06 00:01:20,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:20,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-06 00:01:20,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-06 00:01:20,501 INFO L87 Difference]: Start difference. First operand 54 states and 132 transitions. Second operand 14 states. [2020-10-06 00:01:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:20,831 INFO L93 Difference]: Finished difference Result 92 states and 210 transitions. [2020-10-06 00:01:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-06 00:01:20,832 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-06 00:01:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:20,833 INFO L225 Difference]: With dead ends: 92 [2020-10-06 00:01:20,833 INFO L226 Difference]: Without dead ends: 86 [2020-10-06 00:01:20,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2020-10-06 00:01:20,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-06 00:01:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2020-10-06 00:01:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-06 00:01:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 138 transitions. [2020-10-06 00:01:20,839 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 138 transitions. Word has length 17 [2020-10-06 00:01:20,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:20,839 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 138 transitions. [2020-10-06 00:01:20,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-06 00:01:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 138 transitions. [2020-10-06 00:01:20,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:01:20,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:20,840 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:21,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-06 00:01:21,049 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:21,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:21,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1170028136, now seen corresponding path program 22 times [2020-10-06 00:01:21,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:21,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307123761] [2020-10-06 00:01:21,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:21,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307123761] [2020-10-06 00:01:21,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474262853] [2020-10-06 00:01:21,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:21,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 00:01:21,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:21,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-06 00:01:21,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:21,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:21,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-06 00:01:21,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1763744255] [2020-10-06 00:01:21,212 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:21,213 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:21,216 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-06 00:01:21,216 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:21,228 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:21,228 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:21,246 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5519#(and (< ~i~0 16) (<= ~j~0 8))] [2020-10-06 00:01:21,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-06 00:01:21,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:21,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-06 00:01:21,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-06 00:01:21,247 INFO L87 Difference]: Start difference. First operand 56 states and 138 transitions. Second operand 14 states. [2020-10-06 00:01:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:21,631 INFO L93 Difference]: Finished difference Result 89 states and 206 transitions. [2020-10-06 00:01:21,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-06 00:01:21,631 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-06 00:01:21,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:21,632 INFO L225 Difference]: With dead ends: 89 [2020-10-06 00:01:21,633 INFO L226 Difference]: Without dead ends: 83 [2020-10-06 00:01:21,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2020-10-06 00:01:21,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-06 00:01:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 58. [2020-10-06 00:01:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-06 00:01:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 144 transitions. [2020-10-06 00:01:21,637 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 144 transitions. Word has length 17 [2020-10-06 00:01:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:21,637 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 144 transitions. [2020-10-06 00:01:21,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-06 00:01:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 144 transitions. [2020-10-06 00:01:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:01:21,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:21,638 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:21,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-06 00:01:21,849 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:21,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:21,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1875807226, now seen corresponding path program 23 times [2020-10-06 00:01:21,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:21,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716984930] [2020-10-06 00:01:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:21,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716984930] [2020-10-06 00:01:21,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671747310] [2020-10-06 00:01:21,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:22,010 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-06 00:01:22,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:22,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-06 00:01:22,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:22,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:22,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-06 00:01:22,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [433761850] [2020-10-06 00:01:22,028 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:22,030 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:22,032 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-06 00:01:22,032 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:22,033 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:22,034 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:22,074 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5820#(and (< ~i~0 16) (<= ~j~0 10))] [2020-10-06 00:01:22,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-06 00:01:22,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:22,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-06 00:01:22,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-06 00:01:22,075 INFO L87 Difference]: Start difference. First operand 58 states and 144 transitions. Second operand 14 states. [2020-10-06 00:01:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:22,525 INFO L93 Difference]: Finished difference Result 89 states and 209 transitions. [2020-10-06 00:01:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-06 00:01:22,525 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-06 00:01:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:22,526 INFO L225 Difference]: With dead ends: 89 [2020-10-06 00:01:22,527 INFO L226 Difference]: Without dead ends: 83 [2020-10-06 00:01:22,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2020-10-06 00:01:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-06 00:01:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2020-10-06 00:01:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-06 00:01:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 152 transitions. [2020-10-06 00:01:22,529 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 152 transitions. Word has length 17 [2020-10-06 00:01:22,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:22,530 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 152 transitions. [2020-10-06 00:01:22,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-06 00:01:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 152 transitions. [2020-10-06 00:01:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:01:22,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:22,530 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:22,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:22,739 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:22,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:22,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1892384476, now seen corresponding path program 24 times [2020-10-06 00:01:22,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:22,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698175383] [2020-10-06 00:01:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:01:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:22,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698175383] [2020-10-06 00:01:22,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777231124] [2020-10-06 00:01:22,823 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 00:01:22,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-06 00:01:22,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 00:01:22,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-06 00:01:22,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 00:01:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:01:22,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 00:01:22,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-06 00:01:22,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [358155003] [2020-10-06 00:01:22,903 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:01:22,904 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:01:22,907 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-10-06 00:01:22,907 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:01:22,908 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-06 00:01:22,908 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-06 00:01:22,943 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [6129#(and (< ~i~0 16) (<= ~j~0 12))] [2020-10-06 00:01:22,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-06 00:01:22,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:01:22,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-06 00:01:22,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-06 00:01:22,944 INFO L87 Difference]: Start difference. First operand 60 states and 152 transitions. Second operand 14 states. [2020-10-06 00:01:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:01:23,577 INFO L93 Difference]: Finished difference Result 90 states and 219 transitions. [2020-10-06 00:01:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-06 00:01:23,578 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-06 00:01:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:01:23,579 INFO L225 Difference]: With dead ends: 90 [2020-10-06 00:01:23,579 INFO L226 Difference]: Without dead ends: 78 [2020-10-06 00:01:23,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=384, Invalid=806, Unknown=0, NotChecked=0, Total=1190 [2020-10-06 00:01:23,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-06 00:01:23,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 50. [2020-10-06 00:01:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-06 00:01:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 121 transitions. [2020-10-06 00:01:23,584 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 121 transitions. Word has length 17 [2020-10-06 00:01:23,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:01:23,585 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 121 transitions. [2020-10-06 00:01:23,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-06 00:01:23,585 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 121 transitions. [2020-10-06 00:01:23,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 00:01:23,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:01:23,585 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:01:23,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-06 00:01:23,797 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:01:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:01:23,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1171829247, now seen corresponding path program 25 times [2020-10-06 00:01:23,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:01:23,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363876390] [2020-10-06 00:01:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:01:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:01:23,811 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:01:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:01:23,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:01:23,844 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:01:23,845 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:01:23,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-06 00:01:23,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 12:01:23 BasicIcfg [2020-10-06 00:01:23,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 00:01:23,914 INFO L168 Benchmark]: Toolchain (without parser) took 20390.21 ms. Allocated memory was 140.5 MB in the beginning and 371.2 MB in the end (delta: 230.7 MB). Free memory was 102.8 MB in the beginning and 304.2 MB in the end (delta: -201.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2020-10-06 00:01:23,915 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-06 00:01:23,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.76 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 102.4 MB in the beginning and 165.6 MB in the end (delta: -63.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-10-06 00:01:23,916 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.34 ms. Allocated memory is still 205.5 MB. Free memory was 165.6 MB in the beginning and 163.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-06 00:01:23,916 INFO L168 Benchmark]: Boogie Preprocessor took 26.53 ms. Allocated memory is still 205.5 MB. Free memory was 163.6 MB in the beginning and 162.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 00:01:23,917 INFO L168 Benchmark]: RCFGBuilder took 442.62 ms. Allocated memory is still 205.5 MB. Free memory was 162.3 MB in the beginning and 141.6 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-10-06 00:01:23,918 INFO L168 Benchmark]: TraceAbstraction took 19161.47 ms. Allocated memory was 205.5 MB in the beginning and 371.2 MB in the end (delta: 165.7 MB). Free memory was 141.6 MB in the beginning and 304.2 MB in the end (delta: -162.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-10-06 00:01:23,922 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 708.76 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 102.4 MB in the beginning and 165.6 MB in the end (delta: -63.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.34 ms. Allocated memory is still 205.5 MB. Free memory was 165.6 MB in the beginning and 163.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.53 ms. Allocated memory is still 205.5 MB. Free memory was 163.6 MB in the beginning and 162.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.62 ms. Allocated memory is still 205.5 MB. Free memory was 162.3 MB in the beginning and 141.6 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19161.47 ms. Allocated memory was 205.5 MB in the beginning and 371.2 MB in the end (delta: 165.7 MB). Free memory was 141.6 MB in the beginning and 304.2 MB in the end (delta: -162.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 57 ProgramPointsBefore, 20 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 924 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 486 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 851 CheckedPairsTotal, 42 TotalNumberOfCompositions - 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; [L693] 0 pthread_t id1, id2; [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 < 5 [L679] 1 i = j + 1 [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [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=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] [L697] 0 int condI = i >= (2*5 +6); 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 < 5 [L687] 2 j = i + 1 [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 [L685] 2 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 < 5 [L679] 1 i = j + 1 [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 [L685] 2 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 < 5 [L679] 1 i = j + 1 [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 [L685] 2 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 < 5 [L679] 1 i = j + 1 [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=5, k=4] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L700] 0 int condJ = j >= (2*5 +6); [L702] COND TRUE 0 condI || condJ [L703] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.9s, OverallIterations: 27, TraceHistogramMax: 5, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 374 SDtfs, 1096 SDslu, 1600 SDs, 0 SdLazy, 1735 SolverSat, 803 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 978 GetRequests, 418 SyntacticMatches, 35 SemanticMatches, 525 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2664 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 417 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 714 NumberOfCodeBlocks, 714 NumberOfCodeBlocksAsserted, 90 NumberOfCheckSat, 647 ConstructedInterpolants, 0 QuantifiedInterpolants, 38679 SizeOfPredicates, 152 NumberOfNonLiveVariables, 2232 ConjunctsInSsa, 244 ConjunctsInUnsatCore, 49 InterpolantComputations, 3 PerfectInterpolantSequences, 0/400 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...