/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:47:50,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:47:50,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:47:50,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:47:50,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:47:50,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:47:50,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:47:50,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:47:50,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:47:50,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:47:50,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:47:50,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:47:50,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:47:50,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:47:50,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:47:50,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:47:50,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:47:50,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:47:50,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:47:50,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:47:50,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:47:50,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:47:50,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:47:50,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:47:50,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 22:47:50,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:47:50,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:47:50,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:47:50,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:47:50,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:47:50,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:47:50,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:47:50,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:47:50,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:47:50,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:47:50,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:47:50,705 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 [2020-10-05 22:47:50,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:47:50,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:47:50,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:47:50,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:47:50,742 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:47:50,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:47:50,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:47:50,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:47:50,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:47:50,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:47:50,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:47:50,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:47:50,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:47:50,744 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:47:50,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:47:50,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:47:50,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:47:50,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:47:50,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:47:50,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:47:50,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:47:50,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:47:50,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:47:50,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:47:50,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:47:50,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:47:50,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:47:50,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:47:50,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:47:50,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:47:51,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:47:51,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:47:51,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:47:51,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:47:51,100 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:47:51,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-10-05 22:47:51,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d2cf8368/86bd87e1631146c497a41a5cbfecb12b/FLAG34cc253f3 [2020-10-05 22:47:51,792 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:47:51,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-10-05 22:47:51,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d2cf8368/86bd87e1631146c497a41a5cbfecb12b/FLAG34cc253f3 [2020-10-05 22:47:52,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d2cf8368/86bd87e1631146c497a41a5cbfecb12b [2020-10-05 22:47:52,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:47:52,074 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:47:52,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:47:52,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:47:52,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:47:52,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:47:52" (1/1) ... [2020-10-05 22:47:52,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34bc2bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52, skipping insertion in model container [2020-10-05 22:47:52,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:47:52" (1/1) ... [2020-10-05 22:47:52,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:47:52,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:47:52,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:47:52,625 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:47:52,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:47:52,748 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:47:52,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52 WrapperNode [2020-10-05 22:47:52,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:47:52,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:47:52,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:47:52,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:47:52,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52" (1/1) ... [2020-10-05 22:47:52,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52" (1/1) ... [2020-10-05 22:47:52,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:47:52,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:47:52,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:47:52,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:47:52,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52" (1/1) ... [2020-10-05 22:47:52,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52" (1/1) ... [2020-10-05 22:47:52,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52" (1/1) ... [2020-10-05 22:47:52,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52" (1/1) ... [2020-10-05 22:47:52,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52" (1/1) ... [2020-10-05 22:47:52,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52" (1/1) ... [2020-10-05 22:47:52,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52" (1/1) ... [2020-10-05 22:47:52,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:47:52,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:47:52,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:47:52,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:47:52,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52" (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 [2020-10-05 22:47:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:47:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:47:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:47:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:47:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:47:52,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:47:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:47:52,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:47:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-05 22:47:52,897 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-05 22:47:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:47:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:47:52,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:47:52,899 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:47:53,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:47:53,274 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:47:53,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:47:53 BoogieIcfgContainer [2020-10-05 22:47:53,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:47:53,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:47:53,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:47:53,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:47:53,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:47:52" (1/3) ... [2020-10-05 22:47:53,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13292f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:47:53, skipping insertion in model container [2020-10-05 22:47:53,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:47:52" (2/3) ... [2020-10-05 22:47:53,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13292f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:47:53, skipping insertion in model container [2020-10-05 22:47:53,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:47:53" (3/3) ... [2020-10-05 22:47:53,287 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-10-05 22:47:53,298 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:47:53,298 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:47:53,305 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:47:53,306 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:47:53,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,341 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,341 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,343 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,343 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,343 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,344 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,345 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,345 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,346 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,350 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,350 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,351 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,351 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,361 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,362 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,362 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,362 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,370 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,370 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,371 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:47:53,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 22:47:53,424 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:47:53,424 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:47:53,424 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:47:53,425 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:47:53,425 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:47:53,425 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:47:53,425 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:47:53,425 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:47:53,442 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-05 22:47:53,444 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-05 22:47:53,491 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-05 22:47:53,491 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:47:53,497 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 22:47:53,500 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-05 22:47:53,538 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-05 22:47:53,542 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:47:53,544 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-05 22:47:53,547 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-05 22:47:53,550 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:47:55,214 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-10-05 22:47:55,214 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-10-05 22:47:55,218 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-05 22:47:55,244 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-05 22:47:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-05 22:47:55,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:47:55,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:55,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:55,257 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:55,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:55,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-05 22:47:55,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:55,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570113084] [2020-10-05 22:47:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:55,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570113084] [2020-10-05 22:47:55,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:55,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:47:55,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066124636] [2020-10-05 22:47:55,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:47:55,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:55,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:47:55,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:47:55,521 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-05 22:47:55,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:55,574 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-05 22:47:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:47:55,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-05 22:47:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:55,594 INFO L225 Difference]: With dead ends: 282 [2020-10-05 22:47:55,594 INFO L226 Difference]: Without dead ends: 218 [2020-10-05 22:47:55,596 INFO L675 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 [2020-10-05 22:47:55,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-05 22:47:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-05 22:47:55,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-05 22:47:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-05 22:47:55,684 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-05 22:47:55,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:55,686 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-05 22:47:55,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:47:55,686 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-05 22:47:55,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:47:55,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:55,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:55,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:47:55,688 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:55,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-05 22:47:55,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:55,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969358121] [2020-10-05 22:47:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:55,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969358121] [2020-10-05 22:47:55,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:55,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:47:55,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6835893] [2020-10-05 22:47:55,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:47:55,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:55,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:47:55,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:47:55,829 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-05 22:47:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:55,859 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-10-05 22:47:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:47:55,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-05 22:47:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:55,862 INFO L225 Difference]: With dead ends: 290 [2020-10-05 22:47:55,862 INFO L226 Difference]: Without dead ends: 164 [2020-10-05 22:47:55,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:47:55,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-05 22:47:55,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-05 22:47:55,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-05 22:47:55,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-10-05 22:47:55,876 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-10-05 22:47:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:55,877 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-10-05 22:47:55,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:47:55,877 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-10-05 22:47:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:47:55,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:55,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:55,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:47:55,879 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:55,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:55,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-10-05 22:47:55,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:55,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462658551] [2020-10-05 22:47:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:55,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462658551] [2020-10-05 22:47:55,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:55,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:47:55,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790175395] [2020-10-05 22:47:55,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:47:55,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:55,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:47:55,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:47:55,933 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-10-05 22:47:55,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:55,961 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-10-05 22:47:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:47:55,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-05 22:47:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:55,963 INFO L225 Difference]: With dead ends: 244 [2020-10-05 22:47:55,963 INFO L226 Difference]: Without dead ends: 128 [2020-10-05 22:47:55,964 INFO L675 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 [2020-10-05 22:47:55,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-05 22:47:55,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-10-05 22:47:55,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-05 22:47:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-10-05 22:47:55,973 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-10-05 22:47:55,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:55,973 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-10-05 22:47:55,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:47:55,974 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-10-05 22:47:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:47:55,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:55,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:55,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:47:55,975 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:55,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:55,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-05 22:47:55,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:55,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392126068] [2020-10-05 22:47:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:56,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392126068] [2020-10-05 22:47:56,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:56,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:47:56,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538071315] [2020-10-05 22:47:56,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:47:56,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:56,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:47:56,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:47:56,061 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 4 states. [2020-10-05 22:47:56,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:56,085 INFO L93 Difference]: Finished difference Result 140 states and 310 transitions. [2020-10-05 22:47:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:47:56,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-05 22:47:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:56,086 INFO L225 Difference]: With dead ends: 140 [2020-10-05 22:47:56,087 INFO L226 Difference]: Without dead ends: 68 [2020-10-05 22:47:56,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:47:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-05 22:47:56,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-05 22:47:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-05 22:47:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-05 22:47:56,093 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-10-05 22:47:56,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:56,093 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-05 22:47:56,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:47:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-05 22:47:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:47:56,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:56,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:56,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:47:56,095 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:56,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:56,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-10-05 22:47:56,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:56,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129167412] [2020-10-05 22:47:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:56,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129167412] [2020-10-05 22:47:56,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:56,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:47:56,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737685418] [2020-10-05 22:47:56,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:47:56,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:56,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:47:56,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:47:56,204 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-05 22:47:56,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:56,240 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-05 22:47:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:47:56,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-05 22:47:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:56,247 INFO L225 Difference]: With dead ends: 81 [2020-10-05 22:47:56,247 INFO L226 Difference]: Without dead ends: 59 [2020-10-05 22:47:56,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:47:56,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-05 22:47:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-05 22:47:56,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-05 22:47:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-05 22:47:56,257 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-05 22:47:56,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:56,258 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-05 22:47:56,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:47:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-05 22:47:56,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:47:56,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:56,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:56,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:47:56,260 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:56,261 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-10-05 22:47:56,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:56,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767150402] [2020-10-05 22:47:56,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:56,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767150402] [2020-10-05 22:47:56,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:56,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:47:56,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929415901] [2020-10-05 22:47:56,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:47:56,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:56,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:47:56,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:47:56,335 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-05 22:47:56,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:56,375 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-05 22:47:56,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:47:56,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-05 22:47:56,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:56,377 INFO L225 Difference]: With dead ends: 60 [2020-10-05 22:47:56,377 INFO L226 Difference]: Without dead ends: 45 [2020-10-05 22:47:56,377 INFO L675 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 [2020-10-05 22:47:56,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-05 22:47:56,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-05 22:47:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-05 22:47:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-05 22:47:56,380 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-05 22:47:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:56,381 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-05 22:47:56,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:47:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-05 22:47:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 22:47:56,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:56,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:56,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:47:56,383 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:56,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-10-05 22:47:56,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:56,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261341529] [2020-10-05 22:47:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:56,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261341529] [2020-10-05 22:47:56,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:56,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:47:56,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111089585] [2020-10-05 22:47:56,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:47:56,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:56,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:47:56,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:47:56,457 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-05 22:47:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:56,499 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-05 22:47:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:47:56,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-05 22:47:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:56,501 INFO L225 Difference]: With dead ends: 42 [2020-10-05 22:47:56,501 INFO L226 Difference]: Without dead ends: 36 [2020-10-05 22:47:56,501 INFO L675 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 [2020-10-05 22:47:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-05 22:47:56,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-05 22:47:56,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-05 22:47:56,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-05 22:47:56,504 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-05 22:47:56,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:56,504 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-05 22:47:56,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:47:56,504 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-05 22:47:56,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-05 22:47:56,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:47:56,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:47:56,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 22:47:56,506 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:47:56,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:47:56,506 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-10-05 22:47:56,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:47:56,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873147304] [2020-10-05 22:47:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:47:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:47:56,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:47:56,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873147304] [2020-10-05 22:47:56,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:47:56,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:47:56,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346978425] [2020-10-05 22:47:56,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:47:56,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:47:56,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:47:56,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:47:56,544 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-05 22:47:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:47:56,554 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-05 22:47:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-05 22:47:56,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-05 22:47:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:47:56,555 INFO L225 Difference]: With dead ends: 35 [2020-10-05 22:47:56,555 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:47:56,556 INFO L675 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 [2020-10-05 22:47:56,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:47:56,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:47:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:47:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:47:56,557 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-05 22:47:56,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:47:56,557 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:47:56,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:47:56,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:47:56,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:47:56,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 22:47:56,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:47:56 BasicIcfg [2020-10-05 22:47:56,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:47:56,565 INFO L168 Benchmark]: Toolchain (without parser) took 4489.71 ms. Allocated memory was 137.9 MB in the beginning and 251.7 MB in the end (delta: 113.8 MB). Free memory was 99.2 MB in the beginning and 163.0 MB in the end (delta: -63.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:56,566 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 22:47:56,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.23 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 98.9 MB in the beginning and 154.1 MB in the end (delta: -55.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:56,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.49 ms. Allocated memory is still 199.8 MB. Free memory was 154.1 MB in the beginning and 152.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:56,568 INFO L168 Benchmark]: Boogie Preprocessor took 25.57 ms. Allocated memory is still 199.8 MB. Free memory was 152.0 MB in the beginning and 150.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:56,569 INFO L168 Benchmark]: RCFGBuilder took 455.63 ms. Allocated memory is still 199.8 MB. Free memory was 150.6 MB in the beginning and 127.7 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:56,570 INFO L168 Benchmark]: TraceAbstraction took 3283.21 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 127.7 MB in the beginning and 163.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-10-05 22:47:56,574 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.23 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 98.9 MB in the beginning and 154.1 MB in the end (delta: -55.1 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.49 ms. Allocated memory is still 199.8 MB. Free memory was 154.1 MB in the beginning and 152.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.57 ms. Allocated memory is still 199.8 MB. Free memory was 152.0 MB in the beginning and 150.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.63 ms. Allocated memory is still 199.8 MB. Free memory was 150.6 MB in the beginning and 127.7 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3283.21 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 127.7 MB in the beginning and 163.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 669 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 145 SDtfs, 140 SDslu, 178 SDs, 0 SdLazy, 112 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...