/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/safe000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:16:58,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:16:58,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:16:58,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:16:58,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:16:58,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:16:58,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:16:58,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:16:58,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:16:58,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:16:58,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:16:58,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:16:58,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:16:58,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:16:58,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:16:58,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:16:58,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:16:58,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:16:58,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:16:58,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:16:58,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:16:58,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:16:58,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:16:58,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:16:58,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:16:58,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:16:58,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:16:58,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:16:58,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:16:58,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:16:58,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:16:58,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:16:58,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:16:58,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:16:58,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:16:58,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:16:58,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:16:59,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:16:59,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:16:59,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:16:59,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:16:59,038 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:16:59,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:16:59,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:16:59,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:16:59,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:16:59,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:16:59,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:16:59,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:16:59,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:16:59,042 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:16:59,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:16:59,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:16:59,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:16:59,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:16:59,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:16:59,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:16:59,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:16:59,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:16:59,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:16:59,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:16:59,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:16:59,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:16:59,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:16:59,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:16:59,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:16:59,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:16:59,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:16:59,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:16:59,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:16:59,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:16:59,372 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:16:59,373 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-10-16 11:16:59,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9279a53b/413ed03ad6b94971895817a6a2069537/FLAG758f358eb [2020-10-16 11:16:59,994 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:16:59,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-10-16 11:17:00,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9279a53b/413ed03ad6b94971895817a6a2069537/FLAG758f358eb [2020-10-16 11:17:00,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9279a53b/413ed03ad6b94971895817a6a2069537 [2020-10-16 11:17:00,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:17:00,296 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:17:00,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:17:00,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:17:00,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:17:00,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:17:00" (1/1) ... [2020-10-16 11:17:00,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140c6ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:00, skipping insertion in model container [2020-10-16 11:17:00,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:17:00" (1/1) ... [2020-10-16 11:17:00,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:17:00,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:17:00,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:17:00,928 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:17:00,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:17:01,072 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:17:01,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01 WrapperNode [2020-10-16 11:17:01,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:17:01,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:17:01,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:17:01,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:17:01,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01" (1/1) ... [2020-10-16 11:17:01,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01" (1/1) ... [2020-10-16 11:17:01,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:17:01,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:17:01,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:17:01,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:17:01,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01" (1/1) ... [2020-10-16 11:17:01,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01" (1/1) ... [2020-10-16 11:17:01,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01" (1/1) ... [2020-10-16 11:17:01,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01" (1/1) ... [2020-10-16 11:17:01,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01" (1/1) ... [2020-10-16 11:17:01,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01" (1/1) ... [2020-10-16 11:17:01,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01" (1/1) ... [2020-10-16 11:17:01,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:17:01,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:17:01,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:17:01,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:17:01,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 11:17:01,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:17:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:17:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:17:01,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:17:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:17:01,239 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:17:01,239 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:17:01,240 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:17:01,241 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:17:01,241 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:17:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:17:01,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:17:01,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:17:01,244 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:17:01,614 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:17:01,614 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:17:01,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:17:01 BoogieIcfgContainer [2020-10-16 11:17:01,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:17:01,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:17:01,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:17:01,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:17:01,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:17:00" (1/3) ... [2020-10-16 11:17:01,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5030391d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:17:01, skipping insertion in model container [2020-10-16 11:17:01,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:17:01" (2/3) ... [2020-10-16 11:17:01,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5030391d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:17:01, skipping insertion in model container [2020-10-16 11:17:01,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:17:01" (3/3) ... [2020-10-16 11:17:01,627 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2020-10-16 11:17:01,637 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:17:01,638 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:17:01,645 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:17:01,646 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:17:01,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,677 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,677 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,684 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,685 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,693 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,701 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,701 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,701 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,704 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,705 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,705 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,705 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:17:01,708 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:17:01,723 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:17:01,746 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:17:01,747 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:17:01,747 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:17:01,747 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:17:01,747 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:17:01,747 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:17:01,748 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:17:01,748 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:17:01,762 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:17:01,766 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:17:01,769 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:17:01,772 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 11:17:01,829 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 11:17:01,833 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:17:01,841 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. [2020-10-16 11:17:01,845 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 11:17:03,544 INFO L132 LiptonReduction]: Checked pairs total: 2810 [2020-10-16 11:17:03,544 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 11:17:03,551 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 11:17:03,578 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 11:17:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 11:17:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:17:03,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:03,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:03,591 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:03,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-10-16 11:17:03,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:03,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521194489] [2020-10-16 11:17:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:03,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521194489] [2020-10-16 11:17:03,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:03,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:17:03,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215227776] [2020-10-16 11:17:03,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:17:03,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:03,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:17:03,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:03,881 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 11:17:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:03,936 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-16 11:17:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:17:03,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:17:03,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:03,966 INFO L225 Difference]: With dead ends: 282 [2020-10-16 11:17:03,966 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 11:17:03,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:04,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 11:17:04,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 11:17:04,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 11:17:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-16 11:17:04,043 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-16 11:17:04,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:04,044 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-16 11:17:04,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:17:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-16 11:17:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 11:17:04,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:04,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:04,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:17:04,047 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:04,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-10-16 11:17:04,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:04,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382083027] [2020-10-16 11:17:04,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:04,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382083027] [2020-10-16 11:17:04,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:04,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:17:04,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292777897] [2020-10-16 11:17:04,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:04,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:04,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:04,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:04,181 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-16 11:17:04,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:04,224 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-10-16 11:17:04,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:17:04,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 11:17:04,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:04,227 INFO L225 Difference]: With dead ends: 290 [2020-10-16 11:17:04,227 INFO L226 Difference]: Without dead ends: 164 [2020-10-16 11:17:04,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-16 11:17:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-16 11:17:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 11:17:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-10-16 11:17:04,243 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-10-16 11:17:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:04,244 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-10-16 11:17:04,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-10-16 11:17:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:17:04,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:04,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:04,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:17:04,246 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:04,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:04,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-10-16 11:17:04,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:04,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324880537] [2020-10-16 11:17:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:04,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324880537] [2020-10-16 11:17:04,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:04,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:17:04,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106395923] [2020-10-16 11:17:04,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:04,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:04,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:04,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:04,302 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-10-16 11:17:04,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:04,334 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-10-16 11:17:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:17:04,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:17:04,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:04,336 INFO L225 Difference]: With dead ends: 244 [2020-10-16 11:17:04,337 INFO L226 Difference]: Without dead ends: 128 [2020-10-16 11:17:04,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-16 11:17:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-10-16 11:17:04,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 11:17:04,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-10-16 11:17:04,347 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-10-16 11:17:04,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:04,348 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-10-16 11:17:04,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:04,348 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-10-16 11:17:04,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:17:04,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:04,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:04,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:17:04,350 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:04,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:04,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-10-16 11:17:04,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:04,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536857461] [2020-10-16 11:17:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:04,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536857461] [2020-10-16 11:17:04,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:04,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:17:04,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643689572] [2020-10-16 11:17:04,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:17:04,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:04,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:17:04,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:04,423 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 3 states. [2020-10-16 11:17:04,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:04,430 INFO L93 Difference]: Finished difference Result 110 states and 249 transitions. [2020-10-16 11:17:04,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:17:04,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 11:17:04,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:04,432 INFO L225 Difference]: With dead ends: 110 [2020-10-16 11:17:04,433 INFO L226 Difference]: Without dead ends: 110 [2020-10-16 11:17:04,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:17:04,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-16 11:17:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-16 11:17:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-16 11:17:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 249 transitions. [2020-10-16 11:17:04,451 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 249 transitions. Word has length 11 [2020-10-16 11:17:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:04,452 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 249 transitions. [2020-10-16 11:17:04,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:17:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 249 transitions. [2020-10-16 11:17:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:17:04,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:04,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:04,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:17:04,455 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:04,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:04,456 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-10-16 11:17:04,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:04,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453704440] [2020-10-16 11:17:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:04,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453704440] [2020-10-16 11:17:04,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:04,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:17:04,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164790452] [2020-10-16 11:17:04,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:04,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:04,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:04,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:04,521 INFO L87 Difference]: Start difference. First operand 110 states and 249 transitions. Second operand 4 states. [2020-10-16 11:17:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:04,550 INFO L93 Difference]: Finished difference Result 112 states and 234 transitions. [2020-10-16 11:17:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:17:04,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 11:17:04,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:04,552 INFO L225 Difference]: With dead ends: 112 [2020-10-16 11:17:04,552 INFO L226 Difference]: Without dead ends: 46 [2020-10-16 11:17:04,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-16 11:17:04,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-16 11:17:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-16 11:17:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 84 transitions. [2020-10-16 11:17:04,556 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 84 transitions. Word has length 12 [2020-10-16 11:17:04,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:04,556 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 84 transitions. [2020-10-16 11:17:04,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:04,557 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 84 transitions. [2020-10-16 11:17:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:17:04,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:17:04,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:17:04,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:17:04,558 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:17:04,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:17:04,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1997055762, now seen corresponding path program 1 times [2020-10-16 11:17:04,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:17:04,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521320396] [2020-10-16 11:17:04,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:17:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:17:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:17:04,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521320396] [2020-10-16 11:17:04,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:17:04,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:17:04,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169187214] [2020-10-16 11:17:04,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:17:04,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:17:04,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:17:04,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:17:04,600 INFO L87 Difference]: Start difference. First operand 46 states and 84 transitions. Second operand 4 states. [2020-10-16 11:17:04,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:17:04,612 INFO L93 Difference]: Finished difference Result 34 states and 60 transitions. [2020-10-16 11:17:04,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:17:04,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 11:17:04,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:17:04,613 INFO L225 Difference]: With dead ends: 34 [2020-10-16 11:17:04,613 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:17:04,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:17:04,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:17:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:17:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:17:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:17:04,615 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-16 11:17:04,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:17:04,615 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:17:04,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:17:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:17:04,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:17:04,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:17:04,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:17:04 BasicIcfg [2020-10-16 11:17:04,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:17:04,623 INFO L168 Benchmark]: Toolchain (without parser) took 4326.21 ms. Allocated memory was 139.5 MB in the beginning and 250.6 MB in the end (delta: 111.1 MB). Free memory was 99.9 MB in the beginning and 206.1 MB in the end (delta: -106.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:04,624 INFO L168 Benchmark]: CDTParser took 0.29 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. [2020-10-16 11:17:04,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 776.26 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 161.0 MB in the end (delta: -61.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:04,626 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.05 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:04,627 INFO L168 Benchmark]: Boogie Preprocessor took 27.70 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 157.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:04,628 INFO L168 Benchmark]: RCFGBuilder took 447.03 ms. Allocated memory is still 203.4 MB. Free memory was 157.6 MB in the beginning and 135.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:17:04,628 INFO L168 Benchmark]: TraceAbstraction took 3001.68 ms. Allocated memory was 203.4 MB in the beginning and 250.6 MB in the end (delta: 47.2 MB). Free memory was 134.8 MB in the beginning and 206.1 MB in the end (delta: -71.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:17:04,633 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 776.26 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 161.0 MB in the end (delta: -61.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.05 ms. Allocated memory is still 203.4 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.70 ms. Allocated memory is still 203.4 MB. Free memory was 159.0 MB in the beginning and 157.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.03 ms. Allocated memory is still 203.4 MB. Free memory was 157.6 MB in the beginning and 135.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3001.68 ms. Allocated memory was 203.4 MB in the beginning and 250.6 MB in the end (delta: 47.2 MB). Free memory was 134.8 MB in the beginning and 206.1 MB in the end (delta: -71.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 850 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 70 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2810 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 105 SDtfs, 84 SDslu, 96 SDs, 0 SdLazy, 37 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 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, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 1594 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...