/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/safe029_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:52:06,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:52:06,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:52:06,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:52:06,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:52:06,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:52:06,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:52:06,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:52:06,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:52:06,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:52:06,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:52:06,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:52:06,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:52:06,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:52:06,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:52:06,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:52:06,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:52:06,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:52:06,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:52:06,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:52:06,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:52:06,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:52:06,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:52:06,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:52:06,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 22:52:06,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:52:06,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:52:06,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:52:06,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:52:06,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:52:06,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:52:06,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:52:06,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:52:06,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:52:06,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:52:06,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:52:06,808 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 22:52:06,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:52:06,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:52:06,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:52:06,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:52:06,833 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:52:06,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:52:06,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:52:06,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:52:06,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:52:06,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:52:06,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:52:06,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:52:06,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:52:06,835 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:52:06,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:52:06,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:52:06,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:52:06,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:52:06,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:52:06,836 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:52:06,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:52:06,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:52:06,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:52:06,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:52:06,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:52:06,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:52:06,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:52:06,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:52:06,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:52:06,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:52:07,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:52:07,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:52:07,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:52:07,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:52:07,171 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:52:07,172 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2020-10-05 22:52:07,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d035cdc/fcbef3ed7b054aad9e8e9413dcb70be1/FLAG45bf78d7f [2020-10-05 22:52:07,755 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:52:07,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2020-10-05 22:52:07,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d035cdc/fcbef3ed7b054aad9e8e9413dcb70be1/FLAG45bf78d7f [2020-10-05 22:52:08,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d035cdc/fcbef3ed7b054aad9e8e9413dcb70be1 [2020-10-05 22:52:08,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:52:08,069 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:52:08,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:52:08,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:52:08,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:52:08,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:52:08" (1/1) ... [2020-10-05 22:52:08,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6704dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08, skipping insertion in model container [2020-10-05 22:52:08,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:52:08" (1/1) ... [2020-10-05 22:52:08,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:52:08,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:52:08,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:52:08,644 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:52:08,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:52:08,767 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:52:08,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08 WrapperNode [2020-10-05 22:52:08,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:52:08,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:52:08,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:52:08,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:52:08,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08" (1/1) ... [2020-10-05 22:52:08,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08" (1/1) ... [2020-10-05 22:52:08,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:52:08,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:52:08,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:52:08,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:52:08,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08" (1/1) ... [2020-10-05 22:52:08,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08" (1/1) ... [2020-10-05 22:52:08,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08" (1/1) ... [2020-10-05 22:52:08,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08" (1/1) ... [2020-10-05 22:52:08,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08" (1/1) ... [2020-10-05 22:52:08,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08" (1/1) ... [2020-10-05 22:52:08,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08" (1/1) ... [2020-10-05 22:52:08,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:52:08,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:52:08,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:52:08,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:52:08,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08" (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 22:52:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:52:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:52:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:52:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:52:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-05 22:52:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-05 22:52:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-05 22:52:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-05 22:52:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:52:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:52:08,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:52:08,911 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 22:52:09,247 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:52:09,248 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 22:52:09,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:52:09 BoogieIcfgContainer [2020-10-05 22:52:09,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:52:09,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:52:09,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:52:09,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:52:09,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:52:08" (1/3) ... [2020-10-05 22:52:09,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae321da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:52:09, skipping insertion in model container [2020-10-05 22:52:09,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:52:08" (2/3) ... [2020-10-05 22:52:09,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae321da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:52:09, skipping insertion in model container [2020-10-05 22:52:09,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:52:09" (3/3) ... [2020-10-05 22:52:09,265 INFO L109 eAbstractionObserver]: Analyzing ICFG safe029_tso.oepc.i [2020-10-05 22:52:09,277 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:52:09,277 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:52:09,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:52:09,286 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:52:09,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,314 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,315 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,315 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,316 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,317 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,317 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,317 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,318 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,322 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,323 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,330 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,330 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,331 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,331 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:52:09,348 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-05 22:52:09,369 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:52:09,369 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:52:09,370 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:52:09,370 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:52:09,370 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:52:09,370 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:52:09,371 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:52:09,371 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:52:09,387 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 54 transitions, 118 flow [2020-10-05 22:52:09,389 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-10-05 22:52:09,431 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-10-05 22:52:09,432 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:52:09,440 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-05 22:52:09,445 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-10-05 22:52:09,465 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-10-05 22:52:09,465 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:52:09,466 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-05 22:52:09,468 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-10-05 22:52:09,469 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:52:10,874 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1300 [2020-10-05 22:52:10,875 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2020-10-05 22:52:10,879 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-10-05 22:52:10,893 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-05 22:52:10,896 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-05 22:52:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 22:52:10,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:10,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-05 22:52:10,906 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:10,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1812706200, now seen corresponding path program 1 times [2020-10-05 22:52:10,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:10,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174291632] [2020-10-05 22:52:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:11,130 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 22:52:11,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174291632] [2020-10-05 22:52:11,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:11,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:52:11,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866789130] [2020-10-05 22:52:11,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:52:11,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:11,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:52:11,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:52:11,160 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-10-05 22:52:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:11,195 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-10-05 22:52:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:52:11,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-05 22:52:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:11,210 INFO L225 Difference]: With dead ends: 72 [2020-10-05 22:52:11,210 INFO L226 Difference]: Without dead ends: 56 [2020-10-05 22:52:11,212 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 22:52:11,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-05 22:52:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-05 22:52:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-05 22:52:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-10-05 22:52:11,259 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-10-05 22:52:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:11,260 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-10-05 22:52:11,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:52:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-10-05 22:52:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-05 22:52:11,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:11,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:11,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:52:11,262 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:11,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:11,262 INFO L82 PathProgramCache]: Analyzing trace with hash 343673099, now seen corresponding path program 1 times [2020-10-05 22:52:11,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:11,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895588040] [2020-10-05 22:52:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:11,328 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 22:52:11,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895588040] [2020-10-05 22:52:11,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:11,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 22:52:11,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70082613] [2020-10-05 22:52:11,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:52:11,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:11,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:52:11,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:52:11,333 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 3 states. [2020-10-05 22:52:11,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:11,360 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2020-10-05 22:52:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:52:11,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-05 22:52:11,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:11,363 INFO L225 Difference]: With dead ends: 55 [2020-10-05 22:52:11,363 INFO L226 Difference]: Without dead ends: 55 [2020-10-05 22:52:11,364 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 22:52:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-05 22:52:11,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-05 22:52:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-05 22:52:11,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 111 transitions. [2020-10-05 22:52:11,373 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 111 transitions. Word has length 7 [2020-10-05 22:52:11,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:11,373 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 111 transitions. [2020-10-05 22:52:11,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:52:11,373 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 111 transitions. [2020-10-05 22:52:11,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:52:11,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:11,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:11,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:52:11,375 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:11,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:11,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2063912123, now seen corresponding path program 1 times [2020-10-05 22:52:11,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:11,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737087386] [2020-10-05 22:52:11,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:11,449 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 22:52:11,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737087386] [2020-10-05 22:52:11,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:11,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:52:11,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564268555] [2020-10-05 22:52:11,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:52:11,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:11,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:52:11,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:52:11,452 INFO L87 Difference]: Start difference. First operand 55 states and 111 transitions. Second operand 4 states. [2020-10-05 22:52:11,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:11,489 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-10-05 22:52:11,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:52:11,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-05 22:52:11,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:11,490 INFO L225 Difference]: With dead ends: 56 [2020-10-05 22:52:11,491 INFO L226 Difference]: Without dead ends: 40 [2020-10-05 22:52:11,491 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 22:52:11,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-05 22:52:11,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-05 22:52:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-05 22:52:11,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-05 22:52:11,497 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 8 [2020-10-05 22:52:11,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:11,497 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-05 22:52:11,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:52:11,498 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-05 22:52:11,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:52:11,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:11,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:11,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:52:11,499 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:11,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:11,499 INFO L82 PathProgramCache]: Analyzing trace with hash -444073675, now seen corresponding path program 1 times [2020-10-05 22:52:11,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:11,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634035073] [2020-10-05 22:52:11,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:11,537 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 22:52:11,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634035073] [2020-10-05 22:52:11,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:11,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:52:11,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125392054] [2020-10-05 22:52:11,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:52:11,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:11,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:52:11,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:52:11,539 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 3 states. [2020-10-05 22:52:11,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:11,550 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2020-10-05 22:52:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:52:11,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-05 22:52:11,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:11,551 INFO L225 Difference]: With dead ends: 51 [2020-10-05 22:52:11,551 INFO L226 Difference]: Without dead ends: 41 [2020-10-05 22:52:11,552 INFO L675 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 [2020-10-05 22:52:11,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-05 22:52:11,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-05 22:52:11,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-05 22:52:11,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2020-10-05 22:52:11,557 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 60 transitions. Word has length 9 [2020-10-05 22:52:11,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:11,558 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-10-05 22:52:11,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:52:11,558 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 60 transitions. [2020-10-05 22:52:11,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:52:11,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:11,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:11,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:52:11,559 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:11,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:11,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1686734005, now seen corresponding path program 1 times [2020-10-05 22:52:11,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:11,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467453052] [2020-10-05 22:52:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:11,590 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 22:52:11,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467453052] [2020-10-05 22:52:11,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:11,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:52:11,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316271748] [2020-10-05 22:52:11,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 22:52:11,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:11,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 22:52:11,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 22:52:11,593 INFO L87 Difference]: Start difference. First operand 39 states and 60 transitions. Second operand 3 states. [2020-10-05 22:52:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:11,603 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2020-10-05 22:52:11,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 22:52:11,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-05 22:52:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:11,605 INFO L225 Difference]: With dead ends: 42 [2020-10-05 22:52:11,605 INFO L226 Difference]: Without dead ends: 31 [2020-10-05 22:52:11,605 INFO L675 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 [2020-10-05 22:52:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-05 22:52:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-05 22:52:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-05 22:52:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-10-05 22:52:11,609 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-10-05 22:52:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:11,610 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-10-05 22:52:11,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 22:52:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-10-05 22:52:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:52:11,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:52:11,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:52:11,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 22:52:11,611 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:52:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:52:11,612 INFO L82 PathProgramCache]: Analyzing trace with hash -881401391, now seen corresponding path program 1 times [2020-10-05 22:52:11,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:52:11,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234413745] [2020-10-05 22:52:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:52:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:52:11,659 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 22:52:11,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234413745] [2020-10-05 22:52:11,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:52:11,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:52:11,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569499964] [2020-10-05 22:52:11,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:52:11,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:52:11,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:52:11,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:52:11,661 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 5 states. [2020-10-05 22:52:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:52:11,681 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-10-05 22:52:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:52:11,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-05 22:52:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:52:11,682 INFO L225 Difference]: With dead ends: 25 [2020-10-05 22:52:11,682 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 22:52:11,682 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 22:52:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 22:52:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 22:52:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 22:52:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 22:52:11,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-05 22:52:11,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:52:11,684 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 22:52:11,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:52:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 22:52:11,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 22:52:11,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 22:52:11,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:52:11 BasicIcfg [2020-10-05 22:52:11,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:52:11,691 INFO L168 Benchmark]: Toolchain (without parser) took 3622.33 ms. Allocated memory was 139.5 MB in the beginning and 246.4 MB in the end (delta: 107.0 MB). Free memory was 99.4 MB in the beginning and 139.1 MB in the end (delta: -39.7 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2020-10-05 22:52:11,692 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 22:52:11,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.88 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 160.8 MB in the end (delta: -61.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-05 22:52:11,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.91 ms. Allocated memory is still 202.9 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:52:11,695 INFO L168 Benchmark]: Boogie Preprocessor took 23.84 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 22:52:11,696 INFO L168 Benchmark]: RCFGBuilder took 407.45 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 137.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:52:11,697 INFO L168 Benchmark]: TraceAbstraction took 2436.46 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 136.8 MB in the beginning and 139.1 MB in the end (delta: -2.3 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2020-10-05 22:52:11,701 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 698.88 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 160.8 MB in the end (delta: -61.6 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.91 ms. Allocated memory is still 202.9 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.84 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.45 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 137.5 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2436.46 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 136.8 MB in the beginning and 139.1 MB in the end (delta: -2.3 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 59 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 7 FixpointIterations, 11 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 382 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1300 CheckedPairsTotal, 46 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 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 79 SDtfs, 33 SDslu, 63 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 861 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...