/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 01:18:49,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 01:18:49,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 01:18:49,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 01:18:49,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 01:18:49,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 01:18:49,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 01:18:49,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 01:18:49,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 01:18:49,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 01:18:49,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 01:18:49,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 01:18:49,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 01:18:49,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 01:18:49,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 01:18:49,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 01:18:49,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 01:18:49,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 01:18:49,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 01:18:49,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 01:18:49,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 01:18:49,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 01:18:49,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 01:18:49,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 01:18:49,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 01:18:49,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 01:18:49,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 01:18:49,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 01:18:49,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 01:18:49,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 01:18:49,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 01:18:49,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 01:18:49,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 01:18:49,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 01:18:49,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 01:18:49,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 01:18:49,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 01:18:49,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 01:18:49,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 01:18:49,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 01:18:49,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 01:18:49,571 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-SP.epf [2020-10-22 01:18:49,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 01:18:49,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 01:18:49,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 01:18:49,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 01:18:49,609 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 01:18:49,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 01:18:49,610 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 01:18:49,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 01:18:49,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 01:18:49,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 01:18:49,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 01:18:49,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 01:18:49,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 01:18:49,612 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 01:18:49,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 01:18:49,613 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 01:18:49,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 01:18:49,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 01:18:49,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 01:18:49,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 01:18:49,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 01:18:49,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:18:49,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 01:18:49,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 01:18:49,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 01:18:49,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 01:18:49,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 01:18:49,615 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 01:18:49,615 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 01:18:49,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 01:18:49,616 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 01:18:49,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 01:18:49,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 01:18:49,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 01:18:49,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 01:18:49,936 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 01:18:49,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2020-10-22 01:18:50,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55779e7d4/f41ec2b5b7dd45b884bf2b2599c36c99/FLAG13f5a3ee6 [2020-10-22 01:18:50,585 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 01:18:50,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2020-10-22 01:18:50,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55779e7d4/f41ec2b5b7dd45b884bf2b2599c36c99/FLAG13f5a3ee6 [2020-10-22 01:18:50,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55779e7d4/f41ec2b5b7dd45b884bf2b2599c36c99 [2020-10-22 01:18:50,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 01:18:50,838 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 01:18:50,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 01:18:50,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 01:18:50,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 01:18:50,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:18:50" (1/1) ... [2020-10-22 01:18:50,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57da517f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:50, skipping insertion in model container [2020-10-22 01:18:50,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:18:50" (1/1) ... [2020-10-22 01:18:50,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 01:18:50,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 01:18:51,210 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-22 01:18:51,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:18:51,393 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 01:18:51,420 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-22 01:18:51,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:18:51,534 INFO L208 MainTranslator]: Completed translation [2020-10-22 01:18:51,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51 WrapperNode [2020-10-22 01:18:51,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 01:18:51,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 01:18:51,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 01:18:51,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 01:18:51,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51" (1/1) ... [2020-10-22 01:18:51,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51" (1/1) ... [2020-10-22 01:18:51,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 01:18:51,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 01:18:51,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 01:18:51,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 01:18:51,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51" (1/1) ... [2020-10-22 01:18:51,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51" (1/1) ... [2020-10-22 01:18:51,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51" (1/1) ... [2020-10-22 01:18:51,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51" (1/1) ... [2020-10-22 01:18:51,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51" (1/1) ... [2020-10-22 01:18:51,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51" (1/1) ... [2020-10-22 01:18:51,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51" (1/1) ... [2020-10-22 01:18:51,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 01:18:51,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 01:18:51,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 01:18:51,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 01:18:51,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51" (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 [2020-10-22 01:18:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-22 01:18:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-22 01:18:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-22 01:18:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-22 01:18:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-22 01:18:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 01:18:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 01:18:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 01:18:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 01:18:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 01:18:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 01:18:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 01:18:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 01:18:51,676 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 01:18:52,070 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 01:18:52,071 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-22 01:18:52,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:18:52 BoogieIcfgContainer [2020-10-22 01:18:52,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 01:18:52,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 01:18:52,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 01:18:52,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 01:18:52,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 01:18:50" (1/3) ... [2020-10-22 01:18:52,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5080df5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:18:52, skipping insertion in model container [2020-10-22 01:18:52,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:18:51" (2/3) ... [2020-10-22 01:18:52,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5080df5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:18:52, skipping insertion in model container [2020-10-22 01:18:52,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:18:52" (3/3) ... [2020-10-22 01:18:52,082 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2020-10-22 01:18:52,094 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 01:18:52,094 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 01:18:52,102 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-22 01:18:52,103 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 01:18:52,129 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,130 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,130 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,130 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,131 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,131 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,131 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,132 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,132 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,132 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,133 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,133 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,133 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,134 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,134 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,134 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,134 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,135 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,135 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,136 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,136 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,137 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,137 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,140 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,140 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,140 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,140 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,149 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,156 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,156 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,157 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,157 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,157 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,158 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:18:52,168 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-22 01:18:52,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-22 01:18:52,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:18:52,202 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:18:52,202 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:18:52,202 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:18:52,202 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:18:52,203 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:18:52,203 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:18:52,203 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:18:52,217 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:18:52,218 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 100 transitions, 222 flow [2020-10-22 01:18:52,220 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 100 transitions, 222 flow [2020-10-22 01:18:52,222 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 100 transitions, 222 flow [2020-10-22 01:18:52,272 INFO L129 PetriNetUnfolder]: 16/100 cut-off events. [2020-10-22 01:18:52,273 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-22 01:18:52,279 INFO L80 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 100 events. 16/100 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 175 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place. [2020-10-22 01:18:52,283 INFO L116 LiptonReduction]: Number of co-enabled transitions 2296 [2020-10-22 01:18:53,703 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-22 01:18:54,028 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-10-22 01:18:54,143 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-22 01:18:54,163 INFO L131 LiptonReduction]: Checked pairs total: 8520 [2020-10-22 01:18:54,163 INFO L133 LiptonReduction]: Total number of compositions: 77 [2020-10-22 01:18:54,170 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 47 transitions, 116 flow [2020-10-22 01:18:54,204 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 418 states. [2020-10-22 01:18:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states. [2020-10-22 01:18:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-22 01:18:54,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:54,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-22 01:18:54,214 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:54,220 INFO L82 PathProgramCache]: Analyzing trace with hash -242800708, now seen corresponding path program 1 times [2020-10-22 01:18:54,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:54,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954873053] [2020-10-22 01:18:54,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:54,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954873053] [2020-10-22 01:18:54,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:54,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:18:54,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [483171585] [2020-10-22 01:18:54,428 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:54,430 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:54,440 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-22 01:18:54,440 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:54,444 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:54,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:18:54,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:54,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:18:54,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:18:54,460 INFO L87 Difference]: Start difference. First operand 418 states. Second operand 3 states. [2020-10-22 01:18:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:54,541 INFO L93 Difference]: Finished difference Result 457 states and 1131 transitions. [2020-10-22 01:18:54,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:18:54,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-22 01:18:54,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:54,571 INFO L225 Difference]: With dead ends: 457 [2020-10-22 01:18:54,571 INFO L226 Difference]: Without dead ends: 262 [2020-10-22 01:18:54,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:18:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-22 01:18:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 244. [2020-10-22 01:18:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-22 01:18:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 645 transitions. [2020-10-22 01:18:54,689 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 645 transitions. Word has length 6 [2020-10-22 01:18:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:54,691 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 645 transitions. [2020-10-22 01:18:54,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:18:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 645 transitions. [2020-10-22 01:18:54,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 01:18:54,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:54,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:54,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 01:18:54,701 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:54,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:54,701 INFO L82 PathProgramCache]: Analyzing trace with hash -833333921, now seen corresponding path program 1 times [2020-10-22 01:18:54,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:54,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803139033] [2020-10-22 01:18:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:54,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:54,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803139033] [2020-10-22 01:18:54,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:54,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 01:18:54,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1332438364] [2020-10-22 01:18:54,813 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:54,813 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:54,814 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 01:18:54,815 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:54,815 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:54,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:18:54,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:54,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:18:54,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:18:54,817 INFO L87 Difference]: Start difference. First operand 244 states and 645 transitions. Second operand 3 states. [2020-10-22 01:18:54,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:54,838 INFO L93 Difference]: Finished difference Result 229 states and 589 transitions. [2020-10-22 01:18:54,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:18:54,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-22 01:18:54,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:54,841 INFO L225 Difference]: With dead ends: 229 [2020-10-22 01:18:54,841 INFO L226 Difference]: Without dead ends: 156 [2020-10-22 01:18:54,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:18:54,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-22 01:18:54,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-10-22 01:18:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-22 01:18:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 408 transitions. [2020-10-22 01:18:54,852 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 408 transitions. Word has length 8 [2020-10-22 01:18:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:54,852 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 408 transitions. [2020-10-22 01:18:54,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:18:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 408 transitions. [2020-10-22 01:18:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:18:54,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:54,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:54,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 01:18:54,855 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:54,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:54,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1922613293, now seen corresponding path program 1 times [2020-10-22 01:18:54,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:54,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558543640] [2020-10-22 01:18:54,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:54,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558543640] [2020-10-22 01:18:54,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:54,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 01:18:54,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1197354654] [2020-10-22 01:18:54,918 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:54,918 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:54,921 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-22 01:18:54,921 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:54,998 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:54,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:18:54,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:54,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:18:54,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:18:55,000 INFO L87 Difference]: Start difference. First operand 156 states and 408 transitions. Second operand 4 states. [2020-10-22 01:18:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:55,043 INFO L93 Difference]: Finished difference Result 204 states and 568 transitions. [2020-10-22 01:18:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:18:55,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-22 01:18:55,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:55,045 INFO L225 Difference]: With dead ends: 204 [2020-10-22 01:18:55,045 INFO L226 Difference]: Without dead ends: 150 [2020-10-22 01:18:55,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:18:55,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-22 01:18:55,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-22 01:18:55,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-22 01:18:55,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 388 transitions. [2020-10-22 01:18:55,056 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 388 transitions. Word has length 11 [2020-10-22 01:18:55,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:55,056 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 388 transitions. [2020-10-22 01:18:55,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:18:55,057 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 388 transitions. [2020-10-22 01:18:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 01:18:55,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:55,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:55,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 01:18:55,059 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash -941366756, now seen corresponding path program 1 times [2020-10-22 01:18:55,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:55,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186732210] [2020-10-22 01:18:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:55,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186732210] [2020-10-22 01:18:55,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:55,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 01:18:55,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [234400115] [2020-10-22 01:18:55,128 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:55,129 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:55,131 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-10-22 01:18:55,131 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:55,161 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:55,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:18:55,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:55,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:18:55,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:18:55,163 INFO L87 Difference]: Start difference. First operand 150 states and 388 transitions. Second operand 4 states. [2020-10-22 01:18:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:55,220 INFO L93 Difference]: Finished difference Result 198 states and 544 transitions. [2020-10-22 01:18:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:18:55,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-22 01:18:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:55,222 INFO L225 Difference]: With dead ends: 198 [2020-10-22 01:18:55,222 INFO L226 Difference]: Without dead ends: 144 [2020-10-22 01:18:55,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:18:55,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-22 01:18:55,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-22 01:18:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-22 01:18:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 367 transitions. [2020-10-22 01:18:55,230 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 367 transitions. Word has length 11 [2020-10-22 01:18:55,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:55,231 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 367 transitions. [2020-10-22 01:18:55,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:18:55,231 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 367 transitions. [2020-10-22 01:18:55,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 01:18:55,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:55,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:55,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 01:18:55,233 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:55,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:55,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1713958866, now seen corresponding path program 1 times [2020-10-22 01:18:55,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:55,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37297102] [2020-10-22 01:18:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:55,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37297102] [2020-10-22 01:18:55,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:55,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:18:55,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1942128391] [2020-10-22 01:18:55,268 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:55,270 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:55,273 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 48 transitions. [2020-10-22 01:18:55,273 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:55,360 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [3427#(< thr1Thread1of1ForFork0_~f2~0 1), 3428#(< ~flag2~0 1)] [2020-10-22 01:18:55,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:18:55,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:55,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:18:55,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-22 01:18:55,362 INFO L87 Difference]: Start difference. First operand 144 states and 367 transitions. Second operand 6 states. [2020-10-22 01:18:55,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:55,396 INFO L93 Difference]: Finished difference Result 96 states and 192 transitions. [2020-10-22 01:18:55,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:18:55,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-22 01:18:55,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:55,397 INFO L225 Difference]: With dead ends: 96 [2020-10-22 01:18:55,397 INFO L226 Difference]: Without dead ends: 86 [2020-10-22 01:18:55,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 01:18:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-22 01:18:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-22 01:18:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-22 01:18:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 175 transitions. [2020-10-22 01:18:55,402 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 175 transitions. Word has length 15 [2020-10-22 01:18:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:55,403 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 175 transitions. [2020-10-22 01:18:55,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:18:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 175 transitions. [2020-10-22 01:18:55,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 01:18:55,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:18:55,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:18:55,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 01:18:55,404 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 01:18:55,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:18:55,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1179268395, now seen corresponding path program 1 times [2020-10-22 01:18:55,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:18:55,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338298441] [2020-10-22 01:18:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:18:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:18:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:18:55,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338298441] [2020-10-22 01:18:55,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:18:55,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 01:18:55,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1783094700] [2020-10-22 01:18:55,442 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:18:55,444 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:18:55,446 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-10-22 01:18:55,446 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:18:55,459 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:18:55,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 01:18:55,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:18:55,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 01:18:55,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 01:18:55,460 INFO L87 Difference]: Start difference. First operand 86 states and 175 transitions. Second operand 4 states. [2020-10-22 01:18:55,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:18:55,471 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2020-10-22 01:18:55,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:18:55,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-22 01:18:55,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:18:55,472 INFO L225 Difference]: With dead ends: 12 [2020-10-22 01:18:55,472 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 01:18:55,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:18:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 01:18:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 01:18:55,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 01:18:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 01:18:55,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-22 01:18:55,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:18:55,474 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 01:18:55,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 01:18:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 01:18:55,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 01:18:55,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 01:18:55,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 01:18:55 BasicIcfg [2020-10-22 01:18:55,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 01:18:55,480 INFO L168 Benchmark]: Toolchain (without parser) took 4650.92 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 102.1 MB in the beginning and 118.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 89.1 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:55,481 INFO L168 Benchmark]: CDTParser took 3.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-22 01:18:55,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.56 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 160.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:55,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.62 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 157.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:55,483 INFO L168 Benchmark]: Boogie Preprocessor took 27.90 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 156.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:55,484 INFO L168 Benchmark]: RCFGBuilder took 464.09 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 131.0 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:55,485 INFO L168 Benchmark]: TraceAbstraction took 3403.05 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 130.4 MB in the beginning and 118.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-10-22 01:18:55,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 696.56 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 160.4 MB in the end (delta: -59.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.62 ms. Allocated memory is still 203.4 MB. Free memory was 160.4 MB in the beginning and 157.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.90 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 156.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.09 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 131.0 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3403.05 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 130.4 MB in the beginning and 118.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1218 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 282 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 90 PlacesBefore, 43 PlacesAfterwards, 100 TransitionsBefore, 47 TransitionsAfterwards, 2296 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 6 ChoiceCompositions, 77 TotalNumberOfCompositions, 8520 MoverChecksTotal - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 84 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 256 SDtfs, 188 SDslu, 241 SDs, 0 SdLazy, 74 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=418occurred 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, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 2/2 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...