/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 22:09:45,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 22:09:45,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 22:09:45,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 22:09:45,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 22:09:45,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 22:09:45,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 22:09:45,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 22:09:45,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 22:09:45,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 22:09:45,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 22:09:45,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 22:09:45,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 22:09:45,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 22:09:45,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 22:09:45,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 22:09:45,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 22:09:45,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 22:09:45,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 22:09:45,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 22:09:45,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 22:09:45,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 22:09:45,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 22:09:45,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 22:09:45,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 22:09:45,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 22:09:45,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 22:09:45,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 22:09:45,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 22:09:45,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 22:09:45,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 22:09:45,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 22:09:45,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 22:09:45,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 22:09:45,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 22:09:45,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 22:09:45,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 22:09:45,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 22:09:45,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 22:09:45,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 22:09:45,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 22:09:45,741 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 22:09:45,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 22:09:45,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 22:09:45,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 22:09:45,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 22:09:45,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 22:09:45,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 22:09:45,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 22:09:45,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 22:09:45,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 22:09:45,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 22:09:45,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 22:09:45,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 22:09:45,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 22:09:45,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 22:09:45,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 22:09:45,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 22:09:45,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 22:09:45,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 22:09:45,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 22:09:45,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 22:09:45,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 22:09:45,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 22:09:45,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 22:09:45,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 22:09:46,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 22:09:46,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 22:09:46,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 22:09:46,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 22:09:46,044 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 22:09:46,044 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-10-15 22:09:46,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/519175e32/e6e225e225e4412eb038e834483b4eb8/FLAGada01b9a5 [2020-10-15 22:09:46,629 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 22:09:46,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-10-15 22:09:46,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/519175e32/e6e225e225e4412eb038e834483b4eb8/FLAGada01b9a5 [2020-10-15 22:09:46,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/519175e32/e6e225e225e4412eb038e834483b4eb8 [2020-10-15 22:09:46,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 22:09:46,956 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 22:09:46,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 22:09:46,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 22:09:46,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 22:09:46,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:09:46" (1/1) ... [2020-10-15 22:09:46,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1c832f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:46, skipping insertion in model container [2020-10-15 22:09:46,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 10:09:46" (1/1) ... [2020-10-15 22:09:46,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 22:09:47,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 22:09:47,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:09:47,477 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 22:09:47,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 22:09:47,594 INFO L208 MainTranslator]: Completed translation [2020-10-15 22:09:47,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47 WrapperNode [2020-10-15 22:09:47,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 22:09:47,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 22:09:47,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 22:09:47,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 22:09:47,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47" (1/1) ... [2020-10-15 22:09:47,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47" (1/1) ... [2020-10-15 22:09:47,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 22:09:47,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 22:09:47,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 22:09:47,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 22:09:47,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47" (1/1) ... [2020-10-15 22:09:47,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47" (1/1) ... [2020-10-15 22:09:47,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47" (1/1) ... [2020-10-15 22:09:47,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47" (1/1) ... [2020-10-15 22:09:47,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47" (1/1) ... [2020-10-15 22:09:47,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47" (1/1) ... [2020-10-15 22:09:47,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47" (1/1) ... [2020-10-15 22:09:47,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 22:09:47,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 22:09:47,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 22:09:47,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 22:09:47,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47" (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 [2020-10-15 22:09:47,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 22:09:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 22:09:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 22:09:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 22:09:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 22:09:47,729 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 22:09:47,729 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 22:09:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 22:09:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 22:09:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 22:09:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 22:09:47,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 22:09:47,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 22:09:47,732 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 22:09:48,079 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 22:09:48,080 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 22:09:48,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:09:48 BoogieIcfgContainer [2020-10-15 22:09:48,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 22:09:48,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 22:09:48,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 22:09:48,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 22:09:48,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 10:09:46" (1/3) ... [2020-10-15 22:09:48,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56427419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:09:48, skipping insertion in model container [2020-10-15 22:09:48,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 10:09:47" (2/3) ... [2020-10-15 22:09:48,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56427419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 10:09:48, skipping insertion in model container [2020-10-15 22:09:48,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 10:09:48" (3/3) ... [2020-10-15 22:09:48,091 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-10-15 22:09:48,101 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 22:09:48,101 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 22:09:48,108 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 22:09:48,109 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 22:09:48,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,133 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,133 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,134 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,134 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,134 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,135 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,135 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,135 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,135 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,136 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,136 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,136 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,137 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,137 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,137 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,138 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,138 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,141 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,142 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,142 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,148 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,148 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,148 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,149 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,153 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,154 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,154 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,154 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 22:09:48,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 22:09:48,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 22:09:48,189 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 22:09:48,189 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 22:09:48,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 22:09:48,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 22:09:48,190 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 22:09:48,190 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 22:09:48,190 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 22:09:48,203 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 22:09:48,206 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 22:09:48,209 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-15 22:09:48,210 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-15 22:09:48,252 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-15 22:09:48,253 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 22:09:48,258 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 22:09:48,261 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 22:09:49,508 INFO L132 LiptonReduction]: Checked pairs total: 2334 [2020-10-15 22:09:49,509 INFO L134 LiptonReduction]: Total number of compositions: 56 [2020-10-15 22:09:49,516 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-15 22:09:49,562 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-15 22:09:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-15 22:09:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 22:09:49,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:09:49,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:09:49,592 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:09:49,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:09:49,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-10-15 22:09:49,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:09:49,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510000676] [2020-10-15 22:09:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:09:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:09:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:09:49,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510000676] [2020-10-15 22:09:49,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:09:49,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:09:49,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533138922] [2020-10-15 22:09:49,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 22:09:49,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:09:49,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 22:09:49,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:09:49,796 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-15 22:09:49,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:09:49,827 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-15 22:09:49,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 22:09:49,829 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-15 22:09:49,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:09:49,845 INFO L225 Difference]: With dead ends: 362 [2020-10-15 22:09:49,846 INFO L226 Difference]: Without dead ends: 298 [2020-10-15 22:09:49,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 22:09:49,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-15 22:09:49,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-15 22:09:49,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-15 22:09:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-15 22:09:49,916 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-15 22:09:49,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:09:49,917 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-15 22:09:49,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 22:09:49,917 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-15 22:09:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 22:09:49,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:09:49,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:09:49,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 22:09:49,919 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:09:49,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:09:49,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-10-15 22:09:49,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:09:49,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696894465] [2020-10-15 22:09:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:09:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:09:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:09:50,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696894465] [2020-10-15 22:09:50,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:09:50,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 22:09:50,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481481821] [2020-10-15 22:09:50,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:09:50,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:09:50,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:09:50,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:09:50,098 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-15 22:09:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:09:50,129 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-15 22:09:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:09:50,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 22:09:50,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:09:50,133 INFO L225 Difference]: With dead ends: 330 [2020-10-15 22:09:50,133 INFO L226 Difference]: Without dead ends: 266 [2020-10-15 22:09:50,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:09:50,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-15 22:09:50,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-15 22:09:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 22:09:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-15 22:09:50,155 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-15 22:09:50,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:09:50,156 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-15 22:09:50,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:09:50,156 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-15 22:09:50,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 22:09:50,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:09:50,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:09:50,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 22:09:50,158 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:09:50,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:09:50,159 INFO L82 PathProgramCache]: Analyzing trace with hash -485254353, now seen corresponding path program 1 times [2020-10-15 22:09:50,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:09:50,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648846020] [2020-10-15 22:09:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:09:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:09:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:09:50,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648846020] [2020-10-15 22:09:50,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:09:50,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:09:50,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146341765] [2020-10-15 22:09:50,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:09:50,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:09:50,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:09:50,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:09:50,270 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-10-15 22:09:50,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:09:50,324 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-10-15 22:09:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:09:50,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-15 22:09:50,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:09:50,327 INFO L225 Difference]: With dead ends: 290 [2020-10-15 22:09:50,327 INFO L226 Difference]: Without dead ends: 242 [2020-10-15 22:09:50,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:09:50,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-15 22:09:50,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-15 22:09:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-15 22:09:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-10-15 22:09:50,343 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-10-15 22:09:50,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:09:50,344 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-10-15 22:09:50,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:09:50,344 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-10-15 22:09:50,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 22:09:50,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:09:50,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:09:50,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 22:09:50,367 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:09:50,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:09:50,368 INFO L82 PathProgramCache]: Analyzing trace with hash 2136362745, now seen corresponding path program 1 times [2020-10-15 22:09:50,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:09:50,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417148271] [2020-10-15 22:09:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:09:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:09:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:09:50,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417148271] [2020-10-15 22:09:50,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:09:50,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:09:50,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537005897] [2020-10-15 22:09:50,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:09:50,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:09:50,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:09:50,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:09:50,433 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-10-15 22:09:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:09:50,470 INFO L93 Difference]: Finished difference Result 302 states and 803 transitions. [2020-10-15 22:09:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:09:50,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-15 22:09:50,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:09:50,472 INFO L225 Difference]: With dead ends: 302 [2020-10-15 22:09:50,472 INFO L226 Difference]: Without dead ends: 146 [2020-10-15 22:09:50,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:09:50,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-15 22:09:50,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-15 22:09:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-15 22:09:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-10-15 22:09:50,479 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 11 [2020-10-15 22:09:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:09:50,479 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-10-15 22:09:50,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:09:50,480 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-10-15 22:09:50,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 22:09:50,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:09:50,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:09:50,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 22:09:50,482 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:09:50,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:09:50,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1939864517, now seen corresponding path program 1 times [2020-10-15 22:09:50,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:09:50,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593156042] [2020-10-15 22:09:50,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:09:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:09:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:09:50,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593156042] [2020-10-15 22:09:50,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:09:50,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:09:50,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056017183] [2020-10-15 22:09:50,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:09:50,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:09:50,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:09:50,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:09:50,541 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 6 states. [2020-10-15 22:09:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:09:50,634 INFO L93 Difference]: Finished difference Result 194 states and 465 transitions. [2020-10-15 22:09:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 22:09:50,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-15 22:09:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:09:50,635 INFO L225 Difference]: With dead ends: 194 [2020-10-15 22:09:50,635 INFO L226 Difference]: Without dead ends: 116 [2020-10-15 22:09:50,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-15 22:09:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-15 22:09:50,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-15 22:09:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-15 22:09:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 264 transitions. [2020-10-15 22:09:50,640 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 264 transitions. Word has length 13 [2020-10-15 22:09:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:09:50,641 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 264 transitions. [2020-10-15 22:09:50,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:09:50,641 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 264 transitions. [2020-10-15 22:09:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:09:50,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:09:50,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:09:50,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 22:09:50,643 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:09:50,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:09:50,643 INFO L82 PathProgramCache]: Analyzing trace with hash -471367565, now seen corresponding path program 1 times [2020-10-15 22:09:50,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:09:50,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803119948] [2020-10-15 22:09:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:09:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:09:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:09:50,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803119948] [2020-10-15 22:09:50,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:09:50,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:09:50,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908192742] [2020-10-15 22:09:50,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:09:50,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:09:50,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:09:50,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:09:50,692 INFO L87 Difference]: Start difference. First operand 116 states and 264 transitions. Second operand 5 states. [2020-10-15 22:09:50,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:09:50,725 INFO L93 Difference]: Finished difference Result 131 states and 289 transitions. [2020-10-15 22:09:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:09:50,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 22:09:50,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:09:50,726 INFO L225 Difference]: With dead ends: 131 [2020-10-15 22:09:50,726 INFO L226 Difference]: Without dead ends: 98 [2020-10-15 22:09:50,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 22:09:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-15 22:09:50,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-15 22:09:50,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-15 22:09:50,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-10-15 22:09:50,730 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 14 [2020-10-15 22:09:50,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:09:50,731 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-10-15 22:09:50,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:09:50,731 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-10-15 22:09:50,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 22:09:50,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:09:50,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:09:50,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 22:09:50,732 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:09:50,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:09:50,733 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-10-15 22:09:50,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:09:50,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662975952] [2020-10-15 22:09:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:09:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:09:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:09:50,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662975952] [2020-10-15 22:09:50,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:09:50,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:09:50,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761688346] [2020-10-15 22:09:50,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:09:50,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:09:50,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:09:50,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:09:50,769 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 4 states. [2020-10-15 22:09:50,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:09:50,793 INFO L93 Difference]: Finished difference Result 109 states and 223 transitions. [2020-10-15 22:09:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 22:09:50,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-15 22:09:50,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:09:50,794 INFO L225 Difference]: With dead ends: 109 [2020-10-15 22:09:50,794 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 22:09:50,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:09:50,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 22:09:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-15 22:09:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-15 22:09:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 180 transitions. [2020-10-15 22:09:50,798 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 180 transitions. Word has length 14 [2020-10-15 22:09:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:09:50,798 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 180 transitions. [2020-10-15 22:09:50,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:09:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 180 transitions. [2020-10-15 22:09:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 22:09:50,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:09:50,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:09:50,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 22:09:50,800 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:09:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:09:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1643108637, now seen corresponding path program 1 times [2020-10-15 22:09:50,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:09:50,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093364241] [2020-10-15 22:09:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:09:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:09:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:09:50,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093364241] [2020-10-15 22:09:50,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:09:50,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 22:09:50,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142789628] [2020-10-15 22:09:50,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 22:09:50,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:09:50,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 22:09:50,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:09:50,842 INFO L87 Difference]: Start difference. First operand 87 states and 180 transitions. Second operand 5 states. [2020-10-15 22:09:50,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:09:50,873 INFO L93 Difference]: Finished difference Result 83 states and 155 transitions. [2020-10-15 22:09:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 22:09:50,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-15 22:09:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:09:50,874 INFO L225 Difference]: With dead ends: 83 [2020-10-15 22:09:50,874 INFO L226 Difference]: Without dead ends: 68 [2020-10-15 22:09:50,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:09:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-15 22:09:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-15 22:09:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-15 22:09:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 125 transitions. [2020-10-15 22:09:50,878 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 125 transitions. Word has length 15 [2020-10-15 22:09:50,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:09:50,878 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 125 transitions. [2020-10-15 22:09:50,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 22:09:50,879 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 125 transitions. [2020-10-15 22:09:50,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 22:09:50,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:09:50,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:09:50,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 22:09:50,880 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:09:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:09:50,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-10-15 22:09:50,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:09:50,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697125546] [2020-10-15 22:09:50,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:09:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:09:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:09:50,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697125546] [2020-10-15 22:09:50,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:09:50,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 22:09:50,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064408335] [2020-10-15 22:09:50,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 22:09:50,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:09:50,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 22:09:50,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 22:09:50,923 INFO L87 Difference]: Start difference. First operand 68 states and 125 transitions. Second operand 6 states. [2020-10-15 22:09:50,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:09:50,959 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2020-10-15 22:09:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 22:09:50,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-15 22:09:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:09:50,960 INFO L225 Difference]: With dead ends: 61 [2020-10-15 22:09:50,960 INFO L226 Difference]: Without dead ends: 55 [2020-10-15 22:09:50,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 22:09:50,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-15 22:09:50,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-15 22:09:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 22:09:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-15 22:09:50,963 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-10-15 22:09:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:09:50,963 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-15 22:09:50,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 22:09:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-15 22:09:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 22:09:50,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 22:09:50,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 22:09:50,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 22:09:50,964 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 22:09:50,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 22:09:50,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 1 times [2020-10-15 22:09:50,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 22:09:50,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056811202] [2020-10-15 22:09:50,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 22:09:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 22:09:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 22:09:51,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056811202] [2020-10-15 22:09:51,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 22:09:51,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 22:09:51,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405270351] [2020-10-15 22:09:51,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 22:09:51,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 22:09:51,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 22:09:51,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 22:09:51,026 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-10-15 22:09:51,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 22:09:51,039 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-10-15 22:09:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 22:09:51,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-15 22:09:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 22:09:51,040 INFO L225 Difference]: With dead ends: 54 [2020-10-15 22:09:51,040 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 22:09:51,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 22:09:51,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 22:09:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 22:09:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 22:09:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 22:09:51,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-15 22:09:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 22:09:51,042 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 22:09:51,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 22:09:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 22:09:51,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 22:09:51,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 22:09:51,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 10:09:51 BasicIcfg [2020-10-15 22:09:51,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 22:09:51,049 INFO L168 Benchmark]: Toolchain (without parser) took 4092.14 ms. Allocated memory was 249.6 MB in the beginning and 369.1 MB in the end (delta: 119.5 MB). Free memory was 204.6 MB in the beginning and 225.3 MB in the end (delta: -20.7 MB). Peak memory consumption was 98.8 MB. Max. memory is 14.2 GB. [2020-10-15 22:09:51,049 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 22:09:51,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.34 ms. Allocated memory was 249.6 MB in the beginning and 309.3 MB in the end (delta: 59.8 MB). Free memory was 204.6 MB in the beginning and 262.4 MB in the end (delta: -57.9 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-15 22:09:51,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.58 ms. Allocated memory is still 309.3 MB. Free memory was 262.4 MB in the beginning and 259.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:09:51,056 INFO L168 Benchmark]: Boogie Preprocessor took 25.54 ms. Allocated memory is still 309.3 MB. Free memory was 259.9 MB in the beginning and 257.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 22:09:51,057 INFO L168 Benchmark]: RCFGBuilder took 417.16 ms. Allocated memory is still 309.3 MB. Free memory was 257.4 MB in the beginning and 235.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-15 22:09:51,059 INFO L168 Benchmark]: TraceAbstraction took 2962.71 ms. Allocated memory was 309.3 MB in the beginning and 369.1 MB in the end (delta: 59.8 MB). Free memory was 235.6 MB in the beginning and 225.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 70.0 MB. Max. memory is 14.2 GB. [2020-10-15 22:09:51,069 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 638.34 ms. Allocated memory was 249.6 MB in the beginning and 309.3 MB in the end (delta: 59.8 MB). Free memory was 204.6 MB in the beginning and 262.4 MB in the end (delta: -57.9 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 43.58 ms. Allocated memory is still 309.3 MB. Free memory was 262.4 MB in the beginning and 259.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.54 ms. Allocated memory is still 309.3 MB. Free memory was 259.9 MB in the beginning and 257.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 417.16 ms. Allocated memory is still 309.3 MB. Free memory was 257.4 MB in the beginning and 235.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2962.71 ms. Allocated memory was 309.3 MB in the beginning and 369.1 MB in the end (delta: 59.8 MB). Free memory was 235.6 MB in the beginning and 225.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 70.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 833 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 87 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 78 PlacesBefore, 32 PlacesAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 2334 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 194 SDtfs, 233 SDslu, 333 SDs, 0 SdLazy, 178 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 4582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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...