/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/concurrent/pthreads/NonAtomicIncrement_2Threads.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:22:54,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:22:54,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:22:54,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:22:54,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:22:54,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:22:54,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:22:54,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:22:54,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:22:54,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:22:54,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:22:54,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:22:54,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:22:54,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:22:54,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:22:54,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:22:54,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:22:54,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:22:54,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:22:54,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:22:54,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:22:54,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:22:54,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:22:54,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:22:54,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 01:22:54,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:22:54,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:22:54,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:22:54,404 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 01:22:54,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:22:54,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:22:54,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:22:54,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:22:54,462 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:22:54,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:22:54,463 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:22:54,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:22:54,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:22:54,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:22:54,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:22:54,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:22:54,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:22:54,465 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:22:54,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:22:54,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:22:54,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:22:54,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:22:54,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:22:54,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:22:54,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:22:54,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:22:54,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:22:54,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:22:54,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:22:54,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:22:54,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:22:54,469 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:22:54,469 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:22:54,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:22:54,469 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:22:54,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:22:54,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:22:54,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:22:54,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:22:54,803 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:22:54,804 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2020-10-06 01:22:54,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db596da4b/2d2c058a90874bdaad45c3365f559253/FLAG21ac18667 [2020-10-06 01:22:55,302 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:22:55,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/NonAtomicIncrement_2Threads.c [2020-10-06 01:22:55,303 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-06 01:22:55,303 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-06 01:22:55,303 WARN L117 ultiparseSymbolTable]: System include stdbool.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-06 01:22:55,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db596da4b/2d2c058a90874bdaad45c3365f559253/FLAG21ac18667 [2020-10-06 01:22:55,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db596da4b/2d2c058a90874bdaad45c3365f559253 [2020-10-06 01:22:55,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:22:55,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:22:55,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:22:55,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:22:55,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:22:55,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:22:55" (1/1) ... [2020-10-06 01:22:55,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5886a93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:55, skipping insertion in model container [2020-10-06 01:22:55,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:22:55" (1/1) ... [2020-10-06 01:22:55,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:22:55,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:22:55,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:22:55,975 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:22:56,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:22:56,087 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:22:56,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56 WrapperNode [2020-10-06 01:22:56,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:22:56,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:22:56,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:22:56,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:22:56,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56" (1/1) ... [2020-10-06 01:22:56,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56" (1/1) ... [2020-10-06 01:22:56,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:22:56,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:22:56,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:22:56,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:22:56,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56" (1/1) ... [2020-10-06 01:22:56,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56" (1/1) ... [2020-10-06 01:22:56,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56" (1/1) ... [2020-10-06 01:22:56,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56" (1/1) ... [2020-10-06 01:22:56,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56" (1/1) ... [2020-10-06 01:22:56,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56" (1/1) ... [2020-10-06 01:22:56,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56" (1/1) ... [2020-10-06 01:22:56,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:22:56,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:22:56,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:22:56,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:22:56,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56" (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 01:22:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:22:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:22:56,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:22:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-06 01:22:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure secondIncrement [2020-10-06 01:22:56,206 INFO L138 BoogieDeclarations]: Found implementation of procedure secondIncrement [2020-10-06 01:22:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure firstIncrement [2020-10-06 01:22:56,206 INFO L138 BoogieDeclarations]: Found implementation of procedure firstIncrement [2020-10-06 01:22:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:22:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:22:56,208 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 01:22:56,450 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:22:56,450 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-06 01:22:56,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:22:56 BoogieIcfgContainer [2020-10-06 01:22:56,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:22:56,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:22:56,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:22:56,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:22:56,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:22:55" (1/3) ... [2020-10-06 01:22:56,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dccf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:22:56, skipping insertion in model container [2020-10-06 01:22:56,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:22:56" (2/3) ... [2020-10-06 01:22:56,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dccf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:22:56, skipping insertion in model container [2020-10-06 01:22:56,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:22:56" (3/3) ... [2020-10-06 01:22:56,461 INFO L109 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.c [2020-10-06 01:22:56,474 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:22:56,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:22:56,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:22:56,483 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:22:56,519 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,519 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,520 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,520 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,520 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,521 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,521 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,521 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,521 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,521 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,522 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,522 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,523 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,523 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,523 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,523 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,524 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,524 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,524 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,524 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,525 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,525 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,529 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,530 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~localx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,531 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,531 WARN L313 ript$VariableManager]: TermVariabe |firstIncrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,532 WARN L313 ript$VariableManager]: TermVariabe firstIncrementThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,538 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,538 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,538 WARN L313 ript$VariableManager]: TermVariabe |secondIncrementThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,539 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~localx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,539 WARN L313 ript$VariableManager]: TermVariabe secondIncrementThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:22:56,566 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-06 01:22:56,599 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:22:56,599 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:22:56,599 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:22:56,599 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:22:56,599 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:22:56,600 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:22:56,600 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:22:56,600 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:22:56,619 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 56 transitions, 134 flow [2020-10-06 01:22:56,621 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions, 134 flow [2020-10-06 01:22:56,673 INFO L129 PetriNetUnfolder]: 5/56 cut-off events. [2020-10-06 01:22:56,674 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-06 01:22:56,679 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 56 events. 5/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2020-10-06 01:22:56,683 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions, 134 flow [2020-10-06 01:22:56,706 INFO L129 PetriNetUnfolder]: 5/56 cut-off events. [2020-10-06 01:22:56,707 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-06 01:22:56,708 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 56 events. 5/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2020-10-06 01:22:56,711 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 528 [2020-10-06 01:22:56,712 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:22:57,445 INFO L206 etLargeBlockEncoding]: Checked pairs total: 426 [2020-10-06 01:22:57,446 INFO L214 etLargeBlockEncoding]: Total number of compositions: 32 [2020-10-06 01:22:57,450 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 24 transitions, 70 flow [2020-10-06 01:22:57,464 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 70 states. [2020-10-06 01:22:57,467 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-10-06 01:22:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 01:22:57,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:22:57,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:22:57,478 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:22:57,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:22:57,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1474833226, now seen corresponding path program 1 times [2020-10-06 01:22:57,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:22:57,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359984107] [2020-10-06 01:22:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:22:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:22:57,700 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 01:22:57,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359984107] [2020-10-06 01:22:57,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:22:57,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:22:57,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [635052152] [2020-10-06 01:22:57,705 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:22:57,713 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:22:57,743 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 63 transitions. [2020-10-06 01:22:57,743 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:22:57,799 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [203#(< firstIncrementThread1of1ForFork0_~i~0 5)] [2020-10-06 01:22:57,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:22:57,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:22:57,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:22:57,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:22:57,819 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 4 states. [2020-10-06 01:22:57,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:22:57,858 INFO L93 Difference]: Finished difference Result 109 states and 241 transitions. [2020-10-06 01:22:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:22:57,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-06 01:22:57,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:22:57,879 INFO L225 Difference]: With dead ends: 109 [2020-10-06 01:22:57,880 INFO L226 Difference]: Without dead ends: 108 [2020-10-06 01:22:57,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:22:57,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-06 01:22:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-06 01:22:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-06 01:22:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 240 transitions. [2020-10-06 01:22:57,940 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 240 transitions. Word has length 15 [2020-10-06 01:22:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:22:57,941 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 240 transitions. [2020-10-06 01:22:57,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:22:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 240 transitions. [2020-10-06 01:22:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-06 01:22:57,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:22:57,944 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:22:57,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:22:57,944 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:22:57,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:22:57,945 INFO L82 PathProgramCache]: Analyzing trace with hash -456809054, now seen corresponding path program 1 times [2020-10-06 01:22:57,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:22:57,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833777750] [2020-10-06 01:22:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:22:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:22:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:22:58,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833777750] [2020-10-06 01:22:58,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:22:58,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:22:58,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [588499286] [2020-10-06 01:22:58,017 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:22:58,020 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:22:58,028 INFO L258 McrAutomatonBuilder]: Finished intersection with 70 states and 131 transitions. [2020-10-06 01:22:58,028 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:22:58,083 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:22:58,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:22:58,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:22:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:22:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:22:58,086 INFO L87 Difference]: Start difference. First operand 108 states and 240 transitions. Second operand 3 states. [2020-10-06 01:22:58,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:22:58,101 INFO L93 Difference]: Finished difference Result 142 states and 322 transitions. [2020-10-06 01:22:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:22:58,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-06 01:22:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:22:58,104 INFO L225 Difference]: With dead ends: 142 [2020-10-06 01:22:58,104 INFO L226 Difference]: Without dead ends: 142 [2020-10-06 01:22:58,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:22:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-06 01:22:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2020-10-06 01:22:58,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-06 01:22:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 281 transitions. [2020-10-06 01:22:58,122 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 281 transitions. Word has length 19 [2020-10-06 01:22:58,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:22:58,122 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 281 transitions. [2020-10-06 01:22:58,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:22:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 281 transitions. [2020-10-06 01:22:58,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 01:22:58,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:22:58,128 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:22:58,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:22:58,130 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:22:58,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:22:58,131 INFO L82 PathProgramCache]: Analyzing trace with hash 166337548, now seen corresponding path program 1 times [2020-10-06 01:22:58,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:22:58,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600616021] [2020-10-06 01:22:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:22:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:22:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:22:58,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600616021] [2020-10-06 01:22:58,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021933504] [2020-10-06 01:22:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:22:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:22:58,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-06 01:22:58,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:22:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:22:58,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:22:58,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-06 01:22:58,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1877732183] [2020-10-06 01:22:58,296 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:22:58,299 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:22:58,306 INFO L258 McrAutomatonBuilder]: Finished intersection with 55 states and 96 transitions. [2020-10-06 01:22:58,307 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:22:58,404 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:22:58,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:22:58,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:22:58,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:22:58,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:22:58,405 INFO L87 Difference]: Start difference. First operand 125 states and 281 transitions. Second operand 4 states. [2020-10-06 01:22:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:22:58,426 INFO L93 Difference]: Finished difference Result 176 states and 404 transitions. [2020-10-06 01:22:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:22:58,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-06 01:22:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:22:58,430 INFO L225 Difference]: With dead ends: 176 [2020-10-06 01:22:58,430 INFO L226 Difference]: Without dead ends: 176 [2020-10-06 01:22:58,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 13 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:22:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-06 01:22:58,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 159. [2020-10-06 01:22:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-06 01:22:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 363 transitions. [2020-10-06 01:22:58,449 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 363 transitions. Word has length 21 [2020-10-06 01:22:58,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:22:58,449 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 363 transitions. [2020-10-06 01:22:58,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:22:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 363 transitions. [2020-10-06 01:22:58,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 01:22:58,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:22:58,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:22:58,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-06 01:22:58,667 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:22:58,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:22:58,668 INFO L82 PathProgramCache]: Analyzing trace with hash 2009767926, now seen corresponding path program 2 times [2020-10-06 01:22:58,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:22:58,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639228574] [2020-10-06 01:22:58,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:22:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:22:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:22:58,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639228574] [2020-10-06 01:22:58,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144565935] [2020-10-06 01:22:58,746 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 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 01:22:58,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:22:58,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:22:58,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-06 01:22:58,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:22:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:22:58,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:22:58,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-06 01:22:58,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [219097145] [2020-10-06 01:22:58,829 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:22:58,833 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:22:58,844 INFO L258 McrAutomatonBuilder]: Finished intersection with 63 states and 112 transitions. [2020-10-06 01:22:58,844 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:22:58,996 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:22:58,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-06 01:22:58,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:22:58,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-06 01:22:58,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:22:58,998 INFO L87 Difference]: Start difference. First operand 159 states and 363 transitions. Second operand 5 states. [2020-10-06 01:22:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:22:59,021 INFO L93 Difference]: Finished difference Result 210 states and 486 transitions. [2020-10-06 01:22:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:22:59,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-06 01:22:59,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:22:59,024 INFO L225 Difference]: With dead ends: 210 [2020-10-06 01:22:59,024 INFO L226 Difference]: Without dead ends: 210 [2020-10-06 01:22:59,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 16 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-06 01:22:59,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-06 01:22:59,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 193. [2020-10-06 01:22:59,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-06 01:22:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 445 transitions. [2020-10-06 01:22:59,043 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 445 transitions. Word has length 23 [2020-10-06 01:22:59,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:22:59,044 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 445 transitions. [2020-10-06 01:22:59,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-06 01:22:59,044 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 445 transitions. [2020-10-06 01:22:59,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-06 01:22:59,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:22:59,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:22:59,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:22:59,262 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:22:59,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:22:59,262 INFO L82 PathProgramCache]: Analyzing trace with hash -275132064, now seen corresponding path program 3 times [2020-10-06 01:22:59,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:22:59,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765376137] [2020-10-06 01:22:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:22:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:22:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:22:59,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765376137] [2020-10-06 01:22:59,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690992264] [2020-10-06 01:22:59,323 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 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 01:22:59,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-06 01:22:59,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:22:59,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-06 01:22:59,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:22:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:22:59,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:22:59,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-06 01:22:59,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [70824421] [2020-10-06 01:22:59,399 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:22:59,402 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:22:59,411 INFO L258 McrAutomatonBuilder]: Finished intersection with 71 states and 128 transitions. [2020-10-06 01:22:59,412 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:22:59,565 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:22:59,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-06 01:22:59,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:22:59,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-06 01:22:59,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:22:59,566 INFO L87 Difference]: Start difference. First operand 193 states and 445 transitions. Second operand 6 states. [2020-10-06 01:22:59,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:22:59,598 INFO L93 Difference]: Finished difference Result 244 states and 568 transitions. [2020-10-06 01:22:59,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-06 01:22:59,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-06 01:22:59,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:22:59,600 INFO L225 Difference]: With dead ends: 244 [2020-10-06 01:22:59,601 INFO L226 Difference]: Without dead ends: 244 [2020-10-06 01:22:59,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 19 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-06 01:22:59,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-06 01:22:59,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 227. [2020-10-06 01:22:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-06 01:22:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 527 transitions. [2020-10-06 01:22:59,617 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 527 transitions. Word has length 25 [2020-10-06 01:22:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:22:59,618 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 527 transitions. [2020-10-06 01:22:59,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-06 01:22:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 527 transitions. [2020-10-06 01:22:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-06 01:22:59,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:22:59,623 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:22:59,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:22:59,838 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:22:59,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:22:59,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1335734198, now seen corresponding path program 4 times [2020-10-06 01:22:59,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:22:59,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973802237] [2020-10-06 01:22:59,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:22:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:22:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:22:59,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973802237] [2020-10-06 01:22:59,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557362270] [2020-10-06 01:22:59,902 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 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 01:22:59,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 01:22:59,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:22:59,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-06 01:22:59,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:22:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-06 01:22:59,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:22:59,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-06 01:22:59,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1644853352] [2020-10-06 01:22:59,984 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:22:59,988 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:22:59,999 INFO L258 McrAutomatonBuilder]: Finished intersection with 79 states and 144 transitions. [2020-10-06 01:23:00,000 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:00,163 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:00,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 01:23:00,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:00,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 01:23:00,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-06 01:23:00,165 INFO L87 Difference]: Start difference. First operand 227 states and 527 transitions. Second operand 7 states. [2020-10-06 01:23:00,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:00,230 INFO L93 Difference]: Finished difference Result 261 states and 609 transitions. [2020-10-06 01:23:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-06 01:23:00,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-06 01:23:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:00,234 INFO L225 Difference]: With dead ends: 261 [2020-10-06 01:23:00,234 INFO L226 Difference]: Without dead ends: 261 [2020-10-06 01:23:00,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 22 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-06 01:23:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-06 01:23:00,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2020-10-06 01:23:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-06 01:23:00,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 609 transitions. [2020-10-06 01:23:00,258 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 609 transitions. Word has length 27 [2020-10-06 01:23:00,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:00,258 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 609 transitions. [2020-10-06 01:23:00,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 01:23:00,258 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 609 transitions. [2020-10-06 01:23:00,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-06 01:23:00,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:00,261 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:00,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:00,464 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:00,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:00,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1627831476, now seen corresponding path program 5 times [2020-10-06 01:23:00,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:00,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787032359] [2020-10-06 01:23:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-06 01:23:00,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787032359] [2020-10-06 01:23:00,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482375704] [2020-10-06 01:23:00,544 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 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 01:23:00,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-06 01:23:00,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:00,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-06 01:23:00,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-06 01:23:00,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:00,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-06 01:23:00,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [125395363] [2020-10-06 01:23:00,604 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:00,607 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:00,621 INFO L258 McrAutomatonBuilder]: Finished intersection with 87 states and 160 transitions. [2020-10-06 01:23:00,621 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:00,733 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3888#(< firstIncrementThread1of1ForFork0_~i~0 4), 3889#(or (< firstIncrementThread1of1ForFork0_~i~0 4) (<= 5 firstIncrementThread1of1ForFork0_~i~0)), 3890#(or (<= 4 firstIncrementThread1of1ForFork0_~i~0) (< firstIncrementThread1of1ForFork0_~i~0 3)), 3887#(< firstIncrementThread1of1ForFork0_~i~0 5)] [2020-10-06 01:23:00,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-06 01:23:00,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:00,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-06 01:23:00,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2020-10-06 01:23:00,734 INFO L87 Difference]: Start difference. First operand 261 states and 609 transitions. Second operand 9 states. [2020-10-06 01:23:00,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:00,788 INFO L93 Difference]: Finished difference Result 447 states and 1059 transitions. [2020-10-06 01:23:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-06 01:23:00,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-06 01:23:00,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:00,792 INFO L225 Difference]: With dead ends: 447 [2020-10-06 01:23:00,792 INFO L226 Difference]: Without dead ends: 447 [2020-10-06 01:23:00,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2020-10-06 01:23:00,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-06 01:23:00,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2020-10-06 01:23:00,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-10-06 01:23:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1059 transitions. [2020-10-06 01:23:00,806 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1059 transitions. Word has length 29 [2020-10-06 01:23:00,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:00,806 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 1059 transitions. [2020-10-06 01:23:00,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-06 01:23:00,807 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1059 transitions. [2020-10-06 01:23:00,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:00,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:00,809 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:01,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-06 01:23:01,023 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:01,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:01,024 INFO L82 PathProgramCache]: Analyzing trace with hash -577101562, now seen corresponding path program 6 times [2020-10-06 01:23:01,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:01,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988919048] [2020-10-06 01:23:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 41 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:01,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988919048] [2020-10-06 01:23:01,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465664794] [2020-10-06 01:23:01,317 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:01,366 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-06 01:23:01,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:01,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-06 01:23:01,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:01,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-06 01:23:01,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [21] total 23 [2020-10-06 01:23:01,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1101808416] [2020-10-06 01:23:01,453 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:01,457 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:01,479 INFO L258 McrAutomatonBuilder]: Finished intersection with 111 states and 208 transitions. [2020-10-06 01:23:01,479 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:01,575 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:01,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-06 01:23:01,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:01,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-06 01:23:01,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2020-10-06 01:23:01,577 INFO L87 Difference]: Start difference. First operand 447 states and 1059 transitions. Second operand 23 states. [2020-10-06 01:23:02,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:02,282 INFO L93 Difference]: Finished difference Result 1728 states and 4029 transitions. [2020-10-06 01:23:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-06 01:23:02,283 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-06 01:23:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:02,291 INFO L225 Difference]: With dead ends: 1728 [2020-10-06 01:23:02,291 INFO L226 Difference]: Without dead ends: 876 [2020-10-06 01:23:02,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=720, Invalid=1632, Unknown=0, NotChecked=0, Total=2352 [2020-10-06 01:23:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-10-06 01:23:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 585. [2020-10-06 01:23:02,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-06 01:23:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1403 transitions. [2020-10-06 01:23:02,318 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1403 transitions. Word has length 35 [2020-10-06 01:23:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:02,318 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 1403 transitions. [2020-10-06 01:23:02,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-06 01:23:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1403 transitions. [2020-10-06 01:23:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:02,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:02,321 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:02,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:02,537 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:02,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:02,538 INFO L82 PathProgramCache]: Analyzing trace with hash 915971432, now seen corresponding path program 7 times [2020-10-06 01:23:02,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:02,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517395851] [2020-10-06 01:23:02,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:02,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517395851] [2020-10-06 01:23:02,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164105625] [2020-10-06 01:23:02,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:02,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:02,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:02,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:02,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:02,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1468943262] [2020-10-06 01:23:02,892 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:02,896 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:02,913 INFO L258 McrAutomatonBuilder]: Finished intersection with 130 states and 239 transitions. [2020-10-06 01:23:02,913 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:03,029 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:03,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 01:23:03,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:03,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 01:23:03,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:03,030 INFO L87 Difference]: Start difference. First operand 585 states and 1403 transitions. Second operand 21 states. [2020-10-06 01:23:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:03,635 INFO L93 Difference]: Finished difference Result 1731 states and 4053 transitions. [2020-10-06 01:23:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:23:03,635 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-06 01:23:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:03,640 INFO L225 Difference]: With dead ends: 1731 [2020-10-06 01:23:03,641 INFO L226 Difference]: Without dead ends: 816 [2020-10-06 01:23:03,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=566, Invalid=1414, Unknown=0, NotChecked=0, Total=1980 [2020-10-06 01:23:03,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-10-06 01:23:03,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 569. [2020-10-06 01:23:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-06 01:23:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1355 transitions. [2020-10-06 01:23:03,677 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1355 transitions. Word has length 35 [2020-10-06 01:23:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:03,678 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 1355 transitions. [2020-10-06 01:23:03,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 01:23:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1355 transitions. [2020-10-06 01:23:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:03,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:03,686 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:03,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:03,900 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:03,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:03,901 INFO L82 PathProgramCache]: Analyzing trace with hash -570341976, now seen corresponding path program 8 times [2020-10-06 01:23:03,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:03,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955781673] [2020-10-06 01:23:03,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:04,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955781673] [2020-10-06 01:23:04,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025177405] [2020-10-06 01:23:04,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:04,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:23:04,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:04,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:04,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:04,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:04,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:04,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1215942880] [2020-10-06 01:23:04,230 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:04,235 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:04,258 INFO L258 McrAutomatonBuilder]: Finished intersection with 118 states and 206 transitions. [2020-10-06 01:23:04,258 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:04,351 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:04,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 01:23:04,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:04,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 01:23:04,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:04,353 INFO L87 Difference]: Start difference. First operand 569 states and 1355 transitions. Second operand 21 states. [2020-10-06 01:23:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:05,031 INFO L93 Difference]: Finished difference Result 2131 states and 4974 transitions. [2020-10-06 01:23:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-06 01:23:05,032 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-06 01:23:05,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:05,037 INFO L225 Difference]: With dead ends: 2131 [2020-10-06 01:23:05,037 INFO L226 Difference]: Without dead ends: 792 [2020-10-06 01:23:05,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=558, Invalid=1422, Unknown=0, NotChecked=0, Total=1980 [2020-10-06 01:23:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-10-06 01:23:05,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 553. [2020-10-06 01:23:05,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-10-06 01:23:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1307 transitions. [2020-10-06 01:23:05,080 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1307 transitions. Word has length 35 [2020-10-06 01:23:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:05,080 INFO L479 AbstractCegarLoop]: Abstraction has 553 states and 1307 transitions. [2020-10-06 01:23:05,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 01:23:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1307 transitions. [2020-10-06 01:23:05,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:05,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:05,082 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:05,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-06 01:23:05,297 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:05,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:05,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1306582504, now seen corresponding path program 9 times [2020-10-06 01:23:05,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:05,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286734446] [2020-10-06 01:23:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:05,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286734446] [2020-10-06 01:23:05,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625609292] [2020-10-06 01:23:05,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:05,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-10-06 01:23:05,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:05,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:05,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:05,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:05,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:05,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [181239003] [2020-10-06 01:23:05,653 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:05,658 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:05,686 INFO L258 McrAutomatonBuilder]: Finished intersection with 124 states and 218 transitions. [2020-10-06 01:23:05,686 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:05,791 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:05,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 01:23:05,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:05,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 01:23:05,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:05,792 INFO L87 Difference]: Start difference. First operand 553 states and 1307 transitions. Second operand 21 states. [2020-10-06 01:23:06,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:06,398 INFO L93 Difference]: Finished difference Result 2670 states and 6229 transitions. [2020-10-06 01:23:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-06 01:23:06,399 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-06 01:23:06,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:06,405 INFO L225 Difference]: With dead ends: 2670 [2020-10-06 01:23:06,405 INFO L226 Difference]: Without dead ends: 768 [2020-10-06 01:23:06,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=588, Invalid=1482, Unknown=0, NotChecked=0, Total=2070 [2020-10-06 01:23:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-10-06 01:23:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 537. [2020-10-06 01:23:06,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-06 01:23:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1259 transitions. [2020-10-06 01:23:06,422 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1259 transitions. Word has length 35 [2020-10-06 01:23:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:06,445 INFO L479 AbstractCegarLoop]: Abstraction has 537 states and 1259 transitions. [2020-10-06 01:23:06,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 01:23:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1259 transitions. [2020-10-06 01:23:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:06,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:06,447 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:06,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:06,661 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:06,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:06,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1144743464, now seen corresponding path program 10 times [2020-10-06 01:23:06,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:06,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098454080] [2020-10-06 01:23:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:06,922 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:06,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098454080] [2020-10-06 01:23:06,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167662621] [2020-10-06 01:23:06,923 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 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 01:23:06,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 01:23:06,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:06,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:06,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:07,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:07,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:07,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1895714717] [2020-10-06 01:23:07,008 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:07,013 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:07,035 INFO L258 McrAutomatonBuilder]: Finished intersection with 130 states and 230 transitions. [2020-10-06 01:23:07,036 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:07,143 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:07,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 01:23:07,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:07,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 01:23:07,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:07,144 INFO L87 Difference]: Start difference. First operand 537 states and 1259 transitions. Second operand 21 states. [2020-10-06 01:23:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:07,992 INFO L93 Difference]: Finished difference Result 3002 states and 6985 transitions. [2020-10-06 01:23:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-06 01:23:07,993 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-06 01:23:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:08,006 INFO L225 Difference]: With dead ends: 3002 [2020-10-06 01:23:08,006 INFO L226 Difference]: Without dead ends: 2239 [2020-10-06 01:23:08,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=733, Invalid=2023, Unknown=0, NotChecked=0, Total=2756 [2020-10-06 01:23:08,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2020-10-06 01:23:08,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 1161. [2020-10-06 01:23:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1161 states. [2020-10-06 01:23:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 2801 transitions. [2020-10-06 01:23:08,057 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 2801 transitions. Word has length 35 [2020-10-06 01:23:08,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:08,057 INFO L479 AbstractCegarLoop]: Abstraction has 1161 states and 2801 transitions. [2020-10-06 01:23:08,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 01:23:08,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 2801 transitions. [2020-10-06 01:23:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:08,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:08,062 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:08,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:08,278 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:08,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:08,279 INFO L82 PathProgramCache]: Analyzing trace with hash -664535820, now seen corresponding path program 11 times [2020-10-06 01:23:08,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:08,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315975964] [2020-10-06 01:23:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:08,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315975964] [2020-10-06 01:23:08,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929796721] [2020-10-06 01:23:08,543 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 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 01:23:08,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-10-06 01:23:08,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:08,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:08,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:08,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:08,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:08,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1876579262] [2020-10-06 01:23:08,630 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:08,635 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:08,655 INFO L258 McrAutomatonBuilder]: Finished intersection with 95 states and 160 transitions. [2020-10-06 01:23:08,655 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:08,718 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:08,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 01:23:08,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:08,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 01:23:08,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:08,720 INFO L87 Difference]: Start difference. First operand 1161 states and 2801 transitions. Second operand 21 states. [2020-10-06 01:23:09,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:09,446 INFO L93 Difference]: Finished difference Result 2571 states and 5988 transitions. [2020-10-06 01:23:09,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-06 01:23:09,447 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-06 01:23:09,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:09,457 INFO L225 Difference]: With dead ends: 2571 [2020-10-06 01:23:09,457 INFO L226 Difference]: Without dead ends: 1870 [2020-10-06 01:23:09,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=662, Invalid=1888, Unknown=0, NotChecked=0, Total=2550 [2020-10-06 01:23:09,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2020-10-06 01:23:09,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1077. [2020-10-06 01:23:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-10-06 01:23:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 2573 transitions. [2020-10-06 01:23:09,497 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 2573 transitions. Word has length 35 [2020-10-06 01:23:09,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:09,497 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 2573 transitions. [2020-10-06 01:23:09,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 01:23:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 2573 transitions. [2020-10-06 01:23:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:09,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:09,500 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:09,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-06 01:23:09,714 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:09,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:09,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1221893120, now seen corresponding path program 12 times [2020-10-06 01:23:09,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:09,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977431022] [2020-10-06 01:23:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:09,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977431022] [2020-10-06 01:23:09,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407169287] [2020-10-06 01:23:09,986 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 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 01:23:10,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-06 01:23:10,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:10,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:10,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:10,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:10,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:10,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [942749415] [2020-10-06 01:23:10,072 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:10,077 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:10,093 INFO L258 McrAutomatonBuilder]: Finished intersection with 95 states and 162 transitions. [2020-10-06 01:23:10,093 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:10,157 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:10,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 01:23:10,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:10,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 01:23:10,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:10,158 INFO L87 Difference]: Start difference. First operand 1077 states and 2573 transitions. Second operand 21 states. [2020-10-06 01:23:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:10,842 INFO L93 Difference]: Finished difference Result 2648 states and 6147 transitions. [2020-10-06 01:23:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-06 01:23:10,842 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-06 01:23:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:10,851 INFO L225 Difference]: With dead ends: 2648 [2020-10-06 01:23:10,852 INFO L226 Difference]: Without dead ends: 1604 [2020-10-06 01:23:10,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=639, Invalid=1811, Unknown=0, NotChecked=0, Total=2450 [2020-10-06 01:23:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2020-10-06 01:23:10,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 943. [2020-10-06 01:23:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-06 01:23:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 2226 transitions. [2020-10-06 01:23:10,884 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 2226 transitions. Word has length 35 [2020-10-06 01:23:10,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:10,884 INFO L479 AbstractCegarLoop]: Abstraction has 943 states and 2226 transitions. [2020-10-06 01:23:10,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 01:23:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 2226 transitions. [2020-10-06 01:23:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:10,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:10,887 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:11,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-06 01:23:11,102 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:11,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:11,102 INFO L82 PathProgramCache]: Analyzing trace with hash 28653580, now seen corresponding path program 13 times [2020-10-06 01:23:11,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:11,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850601423] [2020-10-06 01:23:11,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:11,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850601423] [2020-10-06 01:23:11,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758841701] [2020-10-06 01:23:11,311 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 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 01:23:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:11,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:11,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:11,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:11,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:11,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [389903013] [2020-10-06 01:23:11,407 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:11,412 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:11,434 INFO L258 McrAutomatonBuilder]: Finished intersection with 95 states and 164 transitions. [2020-10-06 01:23:11,434 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:11,500 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:11,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 01:23:11,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:11,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 01:23:11,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:11,502 INFO L87 Difference]: Start difference. First operand 943 states and 2226 transitions. Second operand 21 states. [2020-10-06 01:23:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:12,156 INFO L93 Difference]: Finished difference Result 2739 states and 6338 transitions. [2020-10-06 01:23:12,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 01:23:12,157 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-06 01:23:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:12,163 INFO L225 Difference]: With dead ends: 2739 [2020-10-06 01:23:12,164 INFO L226 Difference]: Without dead ends: 1253 [2020-10-06 01:23:12,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2020-10-06 01:23:12,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-10-06 01:23:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 759. [2020-10-06 01:23:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-10-06 01:23:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1760 transitions. [2020-10-06 01:23:12,188 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1760 transitions. Word has length 35 [2020-10-06 01:23:12,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:12,188 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 1760 transitions. [2020-10-06 01:23:12,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 01:23:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1760 transitions. [2020-10-06 01:23:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:12,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:12,191 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:12,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-06 01:23:12,407 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:12,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:12,407 INFO L82 PathProgramCache]: Analyzing trace with hash -786810600, now seen corresponding path program 14 times [2020-10-06 01:23:12,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:12,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366042616] [2020-10-06 01:23:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:12,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366042616] [2020-10-06 01:23:12,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284373614] [2020-10-06 01:23:12,627 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 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 01:23:12,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:23:12,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:12,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:12,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:12,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:12,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:12,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [329034670] [2020-10-06 01:23:12,697 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:12,702 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:12,719 INFO L258 McrAutomatonBuilder]: Finished intersection with 95 states and 166 transitions. [2020-10-06 01:23:12,719 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:12,777 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:12,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 01:23:12,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:12,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 01:23:12,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:12,779 INFO L87 Difference]: Start difference. First operand 759 states and 1760 transitions. Second operand 21 states. [2020-10-06 01:23:13,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:13,400 INFO L93 Difference]: Finished difference Result 2504 states and 5790 transitions. [2020-10-06 01:23:13,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-06 01:23:13,400 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-06 01:23:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:13,404 INFO L225 Difference]: With dead ends: 2504 [2020-10-06 01:23:13,404 INFO L226 Difference]: Without dead ends: 552 [2020-10-06 01:23:13,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=617, Invalid=1639, Unknown=0, NotChecked=0, Total=2256 [2020-10-06 01:23:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-10-06 01:23:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 521. [2020-10-06 01:23:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-10-06 01:23:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1211 transitions. [2020-10-06 01:23:13,414 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1211 transitions. Word has length 35 [2020-10-06 01:23:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:13,415 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 1211 transitions. [2020-10-06 01:23:13,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 01:23:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1211 transitions. [2020-10-06 01:23:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:13,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:13,417 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:13,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:13,633 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:13,633 INFO L82 PathProgramCache]: Analyzing trace with hash 236248680, now seen corresponding path program 15 times [2020-10-06 01:23:13,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:13,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727922377] [2020-10-06 01:23:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:13,866 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:13,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727922377] [2020-10-06 01:23:13,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438902901] [2020-10-06 01:23:13,867 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 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 01:23:13,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-06 01:23:13,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:13,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:13,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:13,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:13,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:13,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [114173721] [2020-10-06 01:23:13,964 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:13,969 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:13,995 INFO L258 McrAutomatonBuilder]: Finished intersection with 140 states and 251 transitions. [2020-10-06 01:23:13,995 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:14,083 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [41999#(<= 0 firstIncrementThread1of1ForFork0_~localx~0)] [2020-10-06 01:23:14,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 01:23:14,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:14,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 01:23:14,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:14,086 INFO L87 Difference]: Start difference. First operand 521 states and 1211 transitions. Second operand 22 states. [2020-10-06 01:23:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:14,762 INFO L93 Difference]: Finished difference Result 1734 states and 4025 transitions. [2020-10-06 01:23:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-06 01:23:14,763 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 35 [2020-10-06 01:23:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:14,768 INFO L225 Difference]: With dead ends: 1734 [2020-10-06 01:23:14,769 INFO L226 Difference]: Without dead ends: 894 [2020-10-06 01:23:14,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=544, Invalid=1348, Unknown=0, NotChecked=0, Total=1892 [2020-10-06 01:23:14,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-10-06 01:23:14,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 582. [2020-10-06 01:23:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-10-06 01:23:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 1364 transitions. [2020-10-06 01:23:14,790 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 1364 transitions. Word has length 35 [2020-10-06 01:23:14,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:14,790 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 1364 transitions. [2020-10-06 01:23:14,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 01:23:14,791 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 1364 transitions. [2020-10-06 01:23:14,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:14,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:14,794 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:15,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-06 01:23:15,008 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:15,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1268277900, now seen corresponding path program 16 times [2020-10-06 01:23:15,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:15,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098050198] [2020-10-06 01:23:15,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:15,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098050198] [2020-10-06 01:23:15,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586332049] [2020-10-06 01:23:15,249 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 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 01:23:15,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 01:23:15,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:15,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:15,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:15,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:15,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:15,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1243522285] [2020-10-06 01:23:15,320 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:15,327 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:15,349 INFO L258 McrAutomatonBuilder]: Finished intersection with 95 states and 159 transitions. [2020-10-06 01:23:15,350 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:15,445 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [45064#(<= 0 firstIncrementThread1of1ForFork0_~localx~0)] [2020-10-06 01:23:15,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 01:23:15,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:15,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 01:23:15,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:15,446 INFO L87 Difference]: Start difference. First operand 582 states and 1364 transitions. Second operand 22 states. [2020-10-06 01:23:16,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:16,055 INFO L93 Difference]: Finished difference Result 1717 states and 3982 transitions. [2020-10-06 01:23:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-06 01:23:16,056 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 35 [2020-10-06 01:23:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:16,060 INFO L225 Difference]: With dead ends: 1717 [2020-10-06 01:23:16,060 INFO L226 Difference]: Without dead ends: 774 [2020-10-06 01:23:16,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=538, Invalid=1354, Unknown=0, NotChecked=0, Total=1892 [2020-10-06 01:23:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-10-06 01:23:16,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 538. [2020-10-06 01:23:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-06 01:23:16,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1256 transitions. [2020-10-06 01:23:16,074 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1256 transitions. Word has length 35 [2020-10-06 01:23:16,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:16,074 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1256 transitions. [2020-10-06 01:23:16,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 01:23:16,074 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1256 transitions. [2020-10-06 01:23:16,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:16,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:16,076 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:16,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-06 01:23:16,290 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:16,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:16,291 INFO L82 PathProgramCache]: Analyzing trace with hash -905226112, now seen corresponding path program 17 times [2020-10-06 01:23:16,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:16,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222059044] [2020-10-06 01:23:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:16,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222059044] [2020-10-06 01:23:16,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092246107] [2020-10-06 01:23:16,486 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 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 01:23:16,542 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-06 01:23:16,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:16,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:16,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:16,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:16,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:16,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1222942855] [2020-10-06 01:23:16,578 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:16,583 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:16,599 INFO L258 McrAutomatonBuilder]: Finished intersection with 95 states and 161 transitions. [2020-10-06 01:23:16,599 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:16,650 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [48024#(<= 0 firstIncrementThread1of1ForFork0_~localx~0)] [2020-10-06 01:23:16,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 01:23:16,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:16,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 01:23:16,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:16,651 INFO L87 Difference]: Start difference. First operand 538 states and 1256 transitions. Second operand 22 states. [2020-10-06 01:23:17,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:17,240 INFO L93 Difference]: Finished difference Result 2063 states and 4783 transitions. [2020-10-06 01:23:17,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-06 01:23:17,240 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 35 [2020-10-06 01:23:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:17,245 INFO L225 Difference]: With dead ends: 2063 [2020-10-06 01:23:17,245 INFO L226 Difference]: Without dead ends: 716 [2020-10-06 01:23:17,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=569, Invalid=1411, Unknown=0, NotChecked=0, Total=1980 [2020-10-06 01:23:17,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-06 01:23:17,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 494. [2020-10-06 01:23:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2020-10-06 01:23:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1148 transitions. [2020-10-06 01:23:17,256 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1148 transitions. Word has length 35 [2020-10-06 01:23:17,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:17,256 INFO L479 AbstractCegarLoop]: Abstraction has 494 states and 1148 transitions. [2020-10-06 01:23:17,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 01:23:17,256 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1148 transitions. [2020-10-06 01:23:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:17,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:17,258 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:17,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:17,474 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:17,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:17,475 INFO L82 PathProgramCache]: Analyzing trace with hash 95191180, now seen corresponding path program 18 times [2020-10-06 01:23:17,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:17,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001630867] [2020-10-06 01:23:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:17,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001630867] [2020-10-06 01:23:17,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961816505] [2020-10-06 01:23:17,707 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 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 01:23:17,762 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-06 01:23:17,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:17,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:17,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:17,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:17,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:17,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [352340760] [2020-10-06 01:23:17,810 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:17,815 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:17,832 INFO L258 McrAutomatonBuilder]: Finished intersection with 95 states and 163 transitions. [2020-10-06 01:23:17,833 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:17,879 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [51244#(<= 0 firstIncrementThread1of1ForFork0_~localx~0)] [2020-10-06 01:23:17,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-06 01:23:17,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:17,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-06 01:23:17,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:17,881 INFO L87 Difference]: Start difference. First operand 494 states and 1148 transitions. Second operand 22 states. [2020-10-06 01:23:18,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:18,524 INFO L93 Difference]: Finished difference Result 2541 states and 5902 transitions. [2020-10-06 01:23:18,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-06 01:23:18,524 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 35 [2020-10-06 01:23:18,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:18,528 INFO L225 Difference]: With dead ends: 2541 [2020-10-06 01:23:18,528 INFO L226 Difference]: Without dead ends: 658 [2020-10-06 01:23:18,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=596, Invalid=1474, Unknown=0, NotChecked=0, Total=2070 [2020-10-06 01:23:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-06 01:23:18,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 450. [2020-10-06 01:23:18,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-06 01:23:18,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1040 transitions. [2020-10-06 01:23:18,537 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1040 transitions. Word has length 35 [2020-10-06 01:23:18,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:18,537 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 1040 transitions. [2020-10-06 01:23:18,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-06 01:23:18,537 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1040 transitions. [2020-10-06 01:23:18,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:18,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:18,539 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:18,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:18,745 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash -576465512, now seen corresponding path program 19 times [2020-10-06 01:23:18,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:18,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822790776] [2020-10-06 01:23:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:18,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822790776] [2020-10-06 01:23:18,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608159061] [2020-10-06 01:23:18,970 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 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 01:23:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:19,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-06 01:23:19,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:19,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:19,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-06 01:23:19,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [281697165] [2020-10-06 01:23:19,079 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:19,085 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:19,104 INFO L258 McrAutomatonBuilder]: Finished intersection with 95 states and 165 transitions. [2020-10-06 01:23:19,105 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:19,147 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:19,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-06 01:23:19,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:19,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-06 01:23:19,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-10-06 01:23:19,148 INFO L87 Difference]: Start difference. First operand 450 states and 1040 transitions. Second operand 21 states. [2020-10-06 01:23:19,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:19,848 INFO L93 Difference]: Finished difference Result 2615 states and 6067 transitions. [2020-10-06 01:23:19,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-06 01:23:19,848 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 35 [2020-10-06 01:23:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:19,858 INFO L225 Difference]: With dead ends: 2615 [2020-10-06 01:23:19,858 INFO L226 Difference]: Without dead ends: 1699 [2020-10-06 01:23:19,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=692, Invalid=1960, Unknown=0, NotChecked=0, Total=2652 [2020-10-06 01:23:19,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2020-10-06 01:23:19,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 827. [2020-10-06 01:23:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-10-06 01:23:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1968 transitions. [2020-10-06 01:23:19,885 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1968 transitions. Word has length 35 [2020-10-06 01:23:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:19,885 INFO L479 AbstractCegarLoop]: Abstraction has 827 states and 1968 transitions. [2020-10-06 01:23:19,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-06 01:23:19,885 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1968 transitions. [2020-10-06 01:23:19,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:19,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:19,888 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:20,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:20,102 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:20,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:20,102 INFO L82 PathProgramCache]: Analyzing trace with hash -365571194, now seen corresponding path program 20 times [2020-10-06 01:23:20,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:20,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931417664] [2020-10-06 01:23:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:20,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931417664] [2020-10-06 01:23:20,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518626419] [2020-10-06 01:23:20,267 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 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 01:23:20,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-06 01:23:20,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:20,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-06 01:23:20,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:20,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:20,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-10-06 01:23:20,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1864108462] [2020-10-06 01:23:20,362 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:20,369 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:20,384 INFO L258 McrAutomatonBuilder]: Finished intersection with 114 states and 198 transitions. [2020-10-06 01:23:20,385 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:20,442 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:20,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-06 01:23:20,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:20,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-06 01:23:20,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-06 01:23:20,444 INFO L87 Difference]: Start difference. First operand 827 states and 1968 transitions. Second operand 19 states. [2020-10-06 01:23:21,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:21,014 INFO L93 Difference]: Finished difference Result 2261 states and 5231 transitions. [2020-10-06 01:23:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-06 01:23:21,015 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2020-10-06 01:23:21,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:21,023 INFO L225 Difference]: With dead ends: 2261 [2020-10-06 01:23:21,023 INFO L226 Difference]: Without dead ends: 1294 [2020-10-06 01:23:21,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2020-10-06 01:23:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2020-10-06 01:23:21,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 693. [2020-10-06 01:23:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-06 01:23:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1621 transitions. [2020-10-06 01:23:21,041 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1621 transitions. Word has length 35 [2020-10-06 01:23:21,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:21,042 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 1621 transitions. [2020-10-06 01:23:21,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-06 01:23:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1621 transitions. [2020-10-06 01:23:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:21,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:21,044 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:21,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-06 01:23:21,258 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:21,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:21,258 INFO L82 PathProgramCache]: Analyzing trace with hash 244641734, now seen corresponding path program 21 times [2020-10-06 01:23:21,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:21,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360640283] [2020-10-06 01:23:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:21,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360640283] [2020-10-06 01:23:21,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521639259] [2020-10-06 01:23:21,426 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 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 01:23:21,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-06 01:23:21,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:21,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-06 01:23:21,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:21,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:21,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-10-06 01:23:21,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1318563279] [2020-10-06 01:23:21,540 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:21,548 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:21,575 INFO L258 McrAutomatonBuilder]: Finished intersection with 110 states and 185 transitions. [2020-10-06 01:23:21,576 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:21,642 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:21,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-06 01:23:21,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:21,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-06 01:23:21,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-06 01:23:21,644 INFO L87 Difference]: Start difference. First operand 693 states and 1621 transitions. Second operand 19 states. [2020-10-06 01:23:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:22,244 INFO L93 Difference]: Finished difference Result 2379 states and 5483 transitions. [2020-10-06 01:23:22,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-06 01:23:22,244 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2020-10-06 01:23:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:22,248 INFO L225 Difference]: With dead ends: 2379 [2020-10-06 01:23:22,248 INFO L226 Difference]: Without dead ends: 943 [2020-10-06 01:23:22,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=490, Invalid=1402, Unknown=0, NotChecked=0, Total=1892 [2020-10-06 01:23:22,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-10-06 01:23:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 509. [2020-10-06 01:23:22,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-06 01:23:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 1155 transitions. [2020-10-06 01:23:22,261 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 1155 transitions. Word has length 35 [2020-10-06 01:23:22,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:22,261 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 1155 transitions. [2020-10-06 01:23:22,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-06 01:23:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 1155 transitions. [2020-10-06 01:23:22,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-06 01:23:22,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:23:22,263 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:23:22,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-06 01:23:22,476 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-06 01:23:22,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:23:22,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1751254010, now seen corresponding path program 22 times [2020-10-06 01:23:22,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:23:22,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219727320] [2020-10-06 01:23:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:23:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:23:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 29 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:22,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219727320] [2020-10-06 01:23:22,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395163178] [2020-10-06 01:23:22,705 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 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 01:23:22,748 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-06 01:23:22,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-06 01:23:22,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-06 01:23:22,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-06 01:23:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:23:22,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-06 01:23:22,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-10-06 01:23:22,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2140068281] [2020-10-06 01:23:22,783 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:23:22,788 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:23:22,811 INFO L258 McrAutomatonBuilder]: Finished intersection with 120 states and 207 transitions. [2020-10-06 01:23:22,811 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:23:22,870 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:23:22,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-06 01:23:22,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:23:22,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-06 01:23:22,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-06 01:23:22,871 INFO L87 Difference]: Start difference. First operand 509 states and 1155 transitions. Second operand 19 states. [2020-10-06 01:23:23,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:23:23,406 INFO L93 Difference]: Finished difference Result 1969 states and 4520 transitions. [2020-10-06 01:23:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-06 01:23:23,406 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 35 [2020-10-06 01:23:23,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:23:23,406 INFO L225 Difference]: With dead ends: 1969 [2020-10-06 01:23:23,407 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:23:23,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=486, Invalid=1320, Unknown=0, NotChecked=0, Total=1806 [2020-10-06 01:23:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:23:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:23:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:23:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:23:23,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-10-06 01:23:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:23:23,408 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:23:23,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-06 01:23:23,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:23:23,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:23:23,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-06 01:23:23,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:23:23 BasicIcfg [2020-10-06 01:23:23,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:23:23,617 INFO L168 Benchmark]: Toolchain (without parser) took 27881.84 ms. Allocated memory was 137.9 MB in the beginning and 496.0 MB in the end (delta: 358.1 MB). Free memory was 98.7 MB in the beginning and 203.3 MB in the end (delta: -104.6 MB). Peak memory consumption was 253.5 MB. Max. memory is 7.1 GB. [2020-10-06 01:23:23,618 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-06 01:23:23,618 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.40 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 98.5 MB in the beginning and 178.6 MB in the end (delta: -80.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:23:23,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.71 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 176.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-06 01:23:23,620 INFO L168 Benchmark]: Boogie Preprocessor took 21.11 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 175.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:23:23,620 INFO L168 Benchmark]: RCFGBuilder took 303.29 ms. Allocated memory is still 200.8 MB. Free memory was 175.2 MB in the beginning and 158.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:23:23,621 INFO L168 Benchmark]: TraceAbstraction took 27160.96 ms. Allocated memory was 200.8 MB in the beginning and 496.0 MB in the end (delta: 295.2 MB). Free memory was 157.5 MB in the beginning and 203.3 MB in the end (delta: -45.8 MB). Peak memory consumption was 249.4 MB. Max. memory is 7.1 GB. [2020-10-06 01:23:23,624 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 355.40 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 98.5 MB in the beginning and 178.6 MB in the end (delta: -80.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.71 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 176.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.11 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 175.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 303.29 ms. Allocated memory is still 200.8 MB. Free memory was 175.2 MB in the beginning and 158.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27160.96 ms. Allocated memory was 200.8 MB in the beginning and 496.0 MB in the end (delta: 295.2 MB). Free memory was 157.5 MB in the beginning and 203.3 MB in the end (delta: -45.8 MB). Peak memory consumption was 249.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 57 ProgramPointsBefore, 27 ProgramPointsAfterwards, 56 TransitionsBefore, 24 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 235 VarBasedMoverChecksPositive, 7 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 426 CheckedPairsTotal, 32 TotalNumberOfCompositions - PositiveResult [Line: 46]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.0s, OverallIterations: 24, TraceHistogramMax: 5, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 1980 SDtfs, 8488 SDslu, 10048 SDs, 0 SdLazy, 6048 SolverSat, 1044 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2929 GetRequests, 2017 SyntacticMatches, 116 SemanticMatches, 796 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6842 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1161occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 24 MinimizatonAttempts, 7018 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1474 NumberOfCodeBlocks, 1474 NumberOfCodeBlocksAsserted, 115 NumberOfCheckSat, 1428 ConstructedInterpolants, 0 QuantifiedInterpolants, 132388 SizeOfPredicates, 307 NumberOfNonLiveVariables, 2333 ConjunctsInSsa, 358 ConjunctsInUnsatCore, 46 InterpolantComputations, 3 PerfectInterpolantSequences, 1458/1854 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 correct! Received shutdown request...