/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 18:30:54,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 18:30:54,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 18:30:54,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 18:30:54,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 18:30:54,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 18:30:54,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 18:30:54,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 18:30:54,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 18:30:54,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 18:30:54,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 18:30:54,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 18:30:54,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 18:30:54,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 18:30:54,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 18:30:54,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 18:30:54,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 18:30:54,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 18:30:54,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 18:30:54,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 18:30:54,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 18:30:54,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 18:30:54,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 18:30:54,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 18:30:54,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 18:30:54,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 18:30:54,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 18:30:54,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 18:30:54,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 18:30:54,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 18:30:54,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 18:30:54,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 18:30:54,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 18:30:54,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 18:30:54,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 18:30:54,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 18:30:54,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 18:30:54,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 18:30:54,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 18:30:54,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 18:30:54,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 18:30:54,477 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 18:30:54,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 18:30:54,477 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 18:30:54,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 18:30:54,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 18:30:54,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 18:30:54,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 18:30:54,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 18:30:54,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 18:30:54,479 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 18:30:54,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 18:30:54,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 18:30:54,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 18:30:54,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 18:30:54,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 18:30:54,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 18:30:54,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 18:30:54,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:30:54,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 18:30:54,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 18:30:54,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 18:30:54,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 18:30:54,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 18:30:54,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 18:30:54,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 18:30:54,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 18:30:54,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 18:30:54,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 18:30:54,777 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 18:30:54,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 18:30:54,779 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 18:30:54,780 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-10-15 18:30:54,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1993801d2/a38339d1d5b44866ab066884d44393f9/FLAG438fc895a [2020-10-15 18:30:55,441 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 18:30:55,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-10-15 18:30:55,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1993801d2/a38339d1d5b44866ab066884d44393f9/FLAG438fc895a [2020-10-15 18:30:55,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1993801d2/a38339d1d5b44866ab066884d44393f9 [2020-10-15 18:30:55,732 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 18:30:55,734 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 18:30:55,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 18:30:55,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 18:30:55,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 18:30:55,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:30:55" (1/1) ... [2020-10-15 18:30:55,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cee64c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:55, skipping insertion in model container [2020-10-15 18:30:55,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:30:55" (1/1) ... [2020-10-15 18:30:55,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 18:30:55,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 18:30:56,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:30:56,255 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 18:30:56,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 18:30:56,415 INFO L208 MainTranslator]: Completed translation [2020-10-15 18:30:56,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56 WrapperNode [2020-10-15 18:30:56,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 18:30:56,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 18:30:56,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 18:30:56,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 18:30:56,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56" (1/1) ... [2020-10-15 18:30:56,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56" (1/1) ... [2020-10-15 18:30:56,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 18:30:56,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 18:30:56,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 18:30:56,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 18:30:56,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56" (1/1) ... [2020-10-15 18:30:56,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56" (1/1) ... [2020-10-15 18:30:56,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56" (1/1) ... [2020-10-15 18:30:56,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56" (1/1) ... [2020-10-15 18:30:56,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56" (1/1) ... [2020-10-15 18:30:56,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56" (1/1) ... [2020-10-15 18:30:56,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56" (1/1) ... [2020-10-15 18:30:56,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 18:30:56,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 18:30:56,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 18:30:56,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 18:30:56,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 18:30:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 18:30:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 18:30:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 18:30:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 18:30:56,569 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-15 18:30:56,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-15 18:30:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-15 18:30:56,570 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-15 18:30:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-15 18:30:56,570 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-15 18:30:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 18:30:56,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 18:30:56,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 18:30:56,572 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 18:30:56,902 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 18:30:56,902 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-15 18:30:56,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:30:56 BoogieIcfgContainer [2020-10-15 18:30:56,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 18:30:56,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 18:30:56,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 18:30:56,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 18:30:56,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:30:55" (1/3) ... [2020-10-15 18:30:56,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4ae75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:30:56, skipping insertion in model container [2020-10-15 18:30:56,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:30:56" (2/3) ... [2020-10-15 18:30:56,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4ae75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:30:56, skipping insertion in model container [2020-10-15 18:30:56,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:30:56" (3/3) ... [2020-10-15 18:30:56,913 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-10-15 18:30:56,926 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 18:30:56,926 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 18:30:56,934 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 18:30:56,935 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 18:30:56,965 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,966 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,966 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,967 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,967 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,968 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,968 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,968 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,968 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,970 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,970 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,970 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,970 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,975 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,975 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,983 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,984 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,984 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,984 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,987 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,987 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,987 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:56,987 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 18:30:57,007 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 18:30:57,026 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 18:30:57,027 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 18:30:57,027 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 18:30:57,027 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 18:30:57,027 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 18:30:57,027 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 18:30:57,027 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 18:30:57,028 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 18:30:57,041 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 18:30:57,044 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 18:30:57,047 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-15 18:30:57,050 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-15 18:30:57,097 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-15 18:30:57,097 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 18:30:57,103 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-15 18:30:57,105 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-15 18:30:58,634 INFO L132 LiptonReduction]: Checked pairs total: 2581 [2020-10-15 18:30:58,635 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-15 18:30:58,642 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-15 18:30:58,669 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-15 18:30:58,672 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-15 18:30:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 18:30:58,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:58,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:58,687 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:58,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:58,693 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-10-15 18:30:58,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:58,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983988903] [2020-10-15 18:30:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:30:58,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983988903] [2020-10-15 18:30:58,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:58,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:30:58,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068013149] [2020-10-15 18:30:58,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:30:58,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:58,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:30:58,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:30:58,942 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-15 18:30:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:58,986 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-15 18:30:58,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:30:58,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 18:30:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:59,020 INFO L225 Difference]: With dead ends: 282 [2020-10-15 18:30:59,020 INFO L226 Difference]: Without dead ends: 218 [2020-10-15 18:30:59,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:30:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-15 18:30:59,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-15 18:30:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-15 18:30:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-15 18:30:59,085 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-15 18:30:59,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:59,086 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-15 18:30:59,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:30:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-15 18:30:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 18:30:59,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:59,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:59,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 18:30:59,089 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:59,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-10-15 18:30:59,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:59,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239805488] [2020-10-15 18:30:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:59,160 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 18:30:59,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239805488] [2020-10-15 18:30:59,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:59,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:30:59,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512868] [2020-10-15 18:30:59,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:30:59,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:59,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:30:59,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:30:59,164 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-15 18:30:59,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:59,200 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-10-15 18:30:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:30:59,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 18:30:59,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:59,203 INFO L225 Difference]: With dead ends: 296 [2020-10-15 18:30:59,204 INFO L226 Difference]: Without dead ends: 200 [2020-10-15 18:30:59,204 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 18:30:59,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-15 18:30:59,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-15 18:30:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-15 18:30:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-10-15 18:30:59,220 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-10-15 18:30:59,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:59,221 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-10-15 18:30:59,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:30:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-10-15 18:30:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 18:30:59,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:59,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:59,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 18:30:59,223 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:59,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:59,223 INFO L82 PathProgramCache]: Analyzing trace with hash -222134721, now seen corresponding path program 1 times [2020-10-15 18:30:59,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:59,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077200965] [2020-10-15 18:30:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:59,303 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 18:30:59,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077200965] [2020-10-15 18:30:59,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:59,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:30:59,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931006550] [2020-10-15 18:30:59,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:30:59,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:59,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:30:59,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:30:59,307 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand 4 states. [2020-10-15 18:30:59,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:59,356 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-10-15 18:30:59,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:30:59,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-15 18:30:59,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:59,359 INFO L225 Difference]: With dead ends: 314 [2020-10-15 18:30:59,359 INFO L226 Difference]: Without dead ends: 182 [2020-10-15 18:30:59,359 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 18:30:59,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-15 18:30:59,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-10-15 18:30:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-15 18:30:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-10-15 18:30:59,371 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-10-15 18:30:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:59,371 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-10-15 18:30:59,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:30:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-10-15 18:30:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 18:30:59,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:59,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:59,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 18:30:59,373 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:59,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:59,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-10-15 18:30:59,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:59,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706056096] [2020-10-15 18:30:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:59,427 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 18:30:59,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706056096] [2020-10-15 18:30:59,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:59,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:30:59,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483395773] [2020-10-15 18:30:59,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:30:59,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:59,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:30:59,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:30:59,430 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand 3 states. [2020-10-15 18:30:59,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:59,435 INFO L93 Difference]: Finished difference Result 138 states and 328 transitions. [2020-10-15 18:30:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:30:59,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 18:30:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:59,439 INFO L225 Difference]: With dead ends: 138 [2020-10-15 18:30:59,440 INFO L226 Difference]: Without dead ends: 138 [2020-10-15 18:30:59,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:30:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-15 18:30:59,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-15 18:30:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-15 18:30:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 328 transitions. [2020-10-15 18:30:59,447 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 328 transitions. Word has length 11 [2020-10-15 18:30:59,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:59,448 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 328 transitions. [2020-10-15 18:30:59,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:30:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 328 transitions. [2020-10-15 18:30:59,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 18:30:59,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:59,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:59,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 18:30:59,450 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:59,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:59,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-10-15 18:30:59,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:59,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283893043] [2020-10-15 18:30:59,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:59,484 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 18:30:59,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283893043] [2020-10-15 18:30:59,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:59,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:30:59,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816806044] [2020-10-15 18:30:59,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:30:59,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:59,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:30:59,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:30:59,487 INFO L87 Difference]: Start difference. First operand 138 states and 328 transitions. Second operand 3 states. [2020-10-15 18:30:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:59,500 INFO L93 Difference]: Finished difference Result 170 states and 400 transitions. [2020-10-15 18:30:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:30:59,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-15 18:30:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:59,501 INFO L225 Difference]: With dead ends: 170 [2020-10-15 18:30:59,501 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 18:30:59,502 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 [2020-10-15 18:30:59,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 18:30:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-15 18:30:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-15 18:30:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-10-15 18:30:59,507 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-10-15 18:30:59,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:59,507 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-10-15 18:30:59,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:30:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-10-15 18:30:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 18:30:59,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:59,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:59,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 18:30:59,509 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:59,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:59,509 INFO L82 PathProgramCache]: Analyzing trace with hash 413447767, now seen corresponding path program 1 times [2020-10-15 18:30:59,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:59,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067389140] [2020-10-15 18:30:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:59,542 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 18:30:59,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067389140] [2020-10-15 18:30:59,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:59,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:30:59,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842209744] [2020-10-15 18:30:59,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:30:59,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:59,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:30:59,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:30:59,545 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand 4 states. [2020-10-15 18:30:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:59,564 INFO L93 Difference]: Finished difference Result 104 states and 232 transitions. [2020-10-15 18:30:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 18:30:59,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 18:30:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:59,566 INFO L225 Difference]: With dead ends: 104 [2020-10-15 18:30:59,566 INFO L226 Difference]: Without dead ends: 68 [2020-10-15 18:30:59,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 18:30:59,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-15 18:30:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-15 18:30:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-15 18:30:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-15 18:30:59,570 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-10-15 18:30:59,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:59,570 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-15 18:30:59,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:30:59,571 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-15 18:30:59,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 18:30:59,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:59,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:59,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 18:30:59,572 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:59,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:59,572 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-10-15 18:30:59,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:59,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049543629] [2020-10-15 18:30:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:59,624 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 18:30:59,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049543629] [2020-10-15 18:30:59,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:59,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:30:59,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312312091] [2020-10-15 18:30:59,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 18:30:59,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:59,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 18:30:59,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 18:30:59,626 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-15 18:30:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:59,656 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-15 18:30:59,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 18:30:59,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-15 18:30:59,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:59,657 INFO L225 Difference]: With dead ends: 81 [2020-10-15 18:30:59,657 INFO L226 Difference]: Without dead ends: 59 [2020-10-15 18:30:59,658 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 18:30:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-15 18:30:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-15 18:30:59,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-15 18:30:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-15 18:30:59,661 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-15 18:30:59,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:59,662 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-15 18:30:59,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 18:30:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-15 18:30:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 18:30:59,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:59,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:59,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 18:30:59,663 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:59,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-10-15 18:30:59,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:59,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850373520] [2020-10-15 18:30:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:59,713 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 18:30:59,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850373520] [2020-10-15 18:30:59,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:59,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 18:30:59,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584787699] [2020-10-15 18:30:59,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 18:30:59,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:59,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 18:30:59,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 18:30:59,715 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-15 18:30:59,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:59,754 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-15 18:30:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 18:30:59,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 18:30:59,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:59,755 INFO L225 Difference]: With dead ends: 60 [2020-10-15 18:30:59,756 INFO L226 Difference]: Without dead ends: 45 [2020-10-15 18:30:59,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 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 18:30:59,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-15 18:30:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-15 18:30:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-15 18:30:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-15 18:30:59,758 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-15 18:30:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:59,759 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-15 18:30:59,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 18:30:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-15 18:30:59,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 18:30:59,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:59,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:59,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 18:30:59,760 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:59,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:59,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-10-15 18:30:59,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:59,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252255398] [2020-10-15 18:30:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:59,822 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 18:30:59,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252255398] [2020-10-15 18:30:59,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:59,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 18:30:59,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568646467] [2020-10-15 18:30:59,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 18:30:59,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:59,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 18:30:59,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 18:30:59,828 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-15 18:30:59,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:59,878 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-15 18:30:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 18:30:59,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 18:30:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:59,880 INFO L225 Difference]: With dead ends: 42 [2020-10-15 18:30:59,880 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 18:30:59,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 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 18:30:59,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 18:30:59,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-15 18:30:59,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-15 18:30:59,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-15 18:30:59,884 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-15 18:30:59,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:59,885 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-15 18:30:59,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 18:30:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-15 18:30:59,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 18:30:59,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:30:59,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 18:30:59,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 18:30:59,886 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 18:30:59,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:30:59,887 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-10-15 18:30:59,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:30:59,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182554040] [2020-10-15 18:30:59,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:30:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:30:59,947 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 18:30:59,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182554040] [2020-10-15 18:30:59,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:30:59,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 18:30:59,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233392476] [2020-10-15 18:30:59,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:30:59,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:30:59,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:30:59,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:30:59,950 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-15 18:30:59,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:30:59,954 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-15 18:30:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:30:59,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-15 18:30:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:30:59,955 INFO L225 Difference]: With dead ends: 35 [2020-10-15 18:30:59,955 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 18:30:59,956 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 [2020-10-15 18:30:59,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 18:30:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 18:30:59,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 18:30:59,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 18:30:59,957 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-15 18:30:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 18:30:59,957 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 18:30:59,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 18:30:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 18:30:59,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 18:30:59,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 18:30:59,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:30:59 BasicIcfg [2020-10-15 18:30:59,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 18:30:59,964 INFO L168 Benchmark]: Toolchain (without parser) took 4230.02 ms. Allocated memory was 253.8 MB in the beginning and 373.3 MB in the end (delta: 119.5 MB). Free memory was 208.7 MB in the beginning and 233.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 95.2 MB. Max. memory is 14.2 GB. [2020-10-15 18:30:59,965 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:30:59,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.56 ms. Allocated memory was 253.8 MB in the beginning and 321.9 MB in the end (delta: 68.2 MB). Free memory was 208.7 MB in the beginning and 274.7 MB in the end (delta: -66.0 MB). Peak memory consumption was 33.8 MB. Max. memory is 14.2 GB. [2020-10-15 18:30:59,966 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.89 ms. Allocated memory is still 321.9 MB. Free memory is still 274.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 18:30:59,967 INFO L168 Benchmark]: Boogie Preprocessor took 27.85 ms. Allocated memory is still 321.9 MB. Free memory was 274.7 MB in the beginning and 272.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:30:59,968 INFO L168 Benchmark]: RCFGBuilder took 404.53 ms. Allocated memory is still 321.9 MB. Free memory was 272.2 MB in the beginning and 250.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-15 18:30:59,969 INFO L168 Benchmark]: TraceAbstraction took 3055.60 ms. Allocated memory was 321.9 MB in the beginning and 373.3 MB in the end (delta: 51.4 MB). Free memory was 250.1 MB in the beginning and 233.0 MB in the end (delta: 17.1 MB). Peak memory consumption was 68.5 MB. Max. memory is 14.2 GB. [2020-10-15 18:30:59,972 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 682.56 ms. Allocated memory was 253.8 MB in the beginning and 321.9 MB in the end (delta: 68.2 MB). Free memory was 208.7 MB in the beginning and 274.7 MB in the end (delta: -66.0 MB). Peak memory consumption was 33.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 53.89 ms. Allocated memory is still 321.9 MB. Free memory is still 274.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.85 ms. Allocated memory is still 321.9 MB. Free memory was 274.7 MB in the beginning and 272.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 404.53 ms. Allocated memory is still 321.9 MB. Free memory was 272.2 MB in the beginning and 250.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3055.60 ms. Allocated memory was 321.9 MB in the beginning and 373.3 MB in the end (delta: 51.4 MB). Free memory was 250.1 MB in the beginning and 233.0 MB in the end (delta: 17.1 MB). Peak memory consumption was 68.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 819 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 60 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 2581 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 193 SDtfs, 133 SDslu, 201 SDs, 0 SdLazy, 127 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3658 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...