/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/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:08:26,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:08:26,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:08:26,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:08:26,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:08:26,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:08:26,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:08:26,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:08:26,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:08:26,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:08:26,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:08:26,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:08:26,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:08:26,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:08:26,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:08:26,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:08:26,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:08:26,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:08:26,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:08:26,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:08:26,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:08:26,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:08:26,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:08:26,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:08:26,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:08:26,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:08:26,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:08:26,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:08:26,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:08:26,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:08:26,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:08:26,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:08:26,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:08:26,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:08:27,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:08:27,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:08:27,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:08:27,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:08:27,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:08:27,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:08:27,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:08:27,004 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 [2020-09-11 15:08:27,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:08:27,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:08:27,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:08:27,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:08:27,032 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:08:27,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:08:27,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:08:27,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:08:27,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:08:27,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:08:27,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:08:27,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:08:27,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:08:27,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:08:27,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:08:27,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:08:27,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:08:27,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:08:27,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:08:27,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:08:27,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:08:27,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:08:27,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:08:27,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:08:27,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:08:27,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:08:27,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:08:27,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:08:27,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:08:27,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:08:27,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:08:27,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:08:27,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:08:27,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:08:27,542 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:08:27,543 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-09-11 15:08:27,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a107014e/210085746d1c43828aeba31876e5ba40/FLAG05cfe41d6 [2020-09-11 15:08:28,307 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:08:28,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2020-09-11 15:08:28,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a107014e/210085746d1c43828aeba31876e5ba40/FLAG05cfe41d6 [2020-09-11 15:08:28,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a107014e/210085746d1c43828aeba31876e5ba40 [2020-09-11 15:08:28,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:08:28,534 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:08:28,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:08:28,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:08:28,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:08:28,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:08:28" (1/1) ... [2020-09-11 15:08:28,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52250798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:28, skipping insertion in model container [2020-09-11 15:08:28,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:08:28" (1/1) ... [2020-09-11 15:08:28,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:08:28,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:08:29,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:08:29,215 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:08:29,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:08:29,412 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:08:29,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29 WrapperNode [2020-09-11 15:08:29,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:08:29,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:08:29,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:08:29,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:08:29,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29" (1/1) ... [2020-09-11 15:08:29,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29" (1/1) ... [2020-09-11 15:08:29,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:08:29,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:08:29,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:08:29,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:08:29,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29" (1/1) ... [2020-09-11 15:08:29,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29" (1/1) ... [2020-09-11 15:08:29,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29" (1/1) ... [2020-09-11 15:08:29,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29" (1/1) ... [2020-09-11 15:08:29,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29" (1/1) ... [2020-09-11 15:08:29,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29" (1/1) ... [2020-09-11 15:08:29,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29" (1/1) ... [2020-09-11 15:08:29,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:08:29,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:08:29,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:08:29,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:08:29,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29" (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 [2020-09-11 15:08:29,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:08:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:08:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:08:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:08:29,596 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:08:29,596 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:08:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:08:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:08:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:08:29,597 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:08:29,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:08:29,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:08:29,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:08:29,601 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:08:30,033 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:08:30,033 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:08:30,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:08:30 BoogieIcfgContainer [2020-09-11 15:08:30,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:08:30,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:08:30,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:08:30,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:08:30,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:08:28" (1/3) ... [2020-09-11 15:08:30,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e541094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:08:30, skipping insertion in model container [2020-09-11 15:08:30,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:08:29" (2/3) ... [2020-09-11 15:08:30,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e541094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:08:30, skipping insertion in model container [2020-09-11 15:08:30,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:08:30" (3/3) ... [2020-09-11 15:08:30,048 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2020-09-11 15:08:30,060 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:08:30,061 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:08:30,072 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:08:30,073 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:08:30,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,104 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,104 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,105 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,107 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,107 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,108 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,115 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,115 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,130 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:08:30,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:08:30,177 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:08:30,177 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:08:30,178 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:08:30,178 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:08:30,178 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:08:30,178 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:08:30,178 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:08:30,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:08:30,197 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-11 15:08:30,200 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-11 15:08:30,251 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-11 15:08:30,252 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:08:30,258 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:08:30,261 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-11 15:08:30,282 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-11 15:08:30,283 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:08:30,283 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:08:30,286 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 15:08:30,287 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:08:31,825 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-11 15:08:31,995 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-09-11 15:08:31,996 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-11 15:08:32,001 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 15:08:32,030 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 15:08:32,032 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 15:08:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:08:32,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:08:32,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:08:32,045 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:08:32,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:08:32,053 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-09-11 15:08:32,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:08:32,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599650776] [2020-09-11 15:08:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:08:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:08:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:08:32,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599650776] [2020-09-11 15:08:32,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:08:32,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:08:32,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458738547] [2020-09-11 15:08:32,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:08:32,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:08:32,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:08:32,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:08:32,372 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 15:08:32,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:08:32,431 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 15:08:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:08:32,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 15:08:32,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:08:32,453 INFO L225 Difference]: With dead ends: 282 [2020-09-11 15:08:32,454 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 15:08:32,455 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 [2020-09-11 15:08:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 15:08:32,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 15:08:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 15:08:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 15:08:32,536 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 15:08:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:08:32,537 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 15:08:32,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:08:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 15:08:32,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:08:32,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:08:32,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:08:32,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:08:32,540 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:08:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:08:32,540 INFO L82 PathProgramCache]: Analyzing trace with hash 971209488, now seen corresponding path program 1 times [2020-09-11 15:08:32,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:08:32,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426736575] [2020-09-11 15:08:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:08:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:08:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:08:32,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426736575] [2020-09-11 15:08:32,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:08:32,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:08:32,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52343175] [2020-09-11 15:08:32,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:08:32,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:08:32,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:08:32,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:08:32,663 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-11 15:08:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:08:32,735 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-09-11 15:08:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:08:32,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 15:08:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:08:32,741 INFO L225 Difference]: With dead ends: 296 [2020-09-11 15:08:32,742 INFO L226 Difference]: Without dead ends: 200 [2020-09-11 15:08:32,743 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 [2020-09-11 15:08:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-11 15:08:32,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-09-11 15:08:32,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-11 15:08:32,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-09-11 15:08:32,785 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-09-11 15:08:32,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:08:32,785 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-09-11 15:08:32,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:08:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-09-11 15:08:32,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:08:32,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:08:32,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:08:32,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:08:32,790 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:08:32,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:08:32,791 INFO L82 PathProgramCache]: Analyzing trace with hash -222134721, now seen corresponding path program 1 times [2020-09-11 15:08:32,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:08:32,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629552765] [2020-09-11 15:08:32,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:08:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:08:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:08:32,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629552765] [2020-09-11 15:08:32,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:08:32,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:08:32,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740183394] [2020-09-11 15:08:32,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:08:32,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:08:32,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:08:32,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:08:32,905 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand 4 states. [2020-09-11 15:08:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:08:32,938 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-09-11 15:08:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:08:32,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-11 15:08:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:08:32,941 INFO L225 Difference]: With dead ends: 314 [2020-09-11 15:08:32,941 INFO L226 Difference]: Without dead ends: 182 [2020-09-11 15:08:32,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:08:32,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-11 15:08:32,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-09-11 15:08:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-11 15:08:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-09-11 15:08:32,953 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-09-11 15:08:32,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:08:32,954 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-09-11 15:08:32,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:08:32,954 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-09-11 15:08:32,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:08:32,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:08:32,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:08:32,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:08:32,956 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:08:32,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:08:32,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-09-11 15:08:32,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:08:32,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471552586] [2020-09-11 15:08:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:08:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:08:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:08:33,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471552586] [2020-09-11 15:08:33,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:08:33,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:08:33,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048729433] [2020-09-11 15:08:33,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:08:33,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:08:33,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:08:33,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:08:33,061 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand 3 states. [2020-09-11 15:08:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:08:33,069 INFO L93 Difference]: Finished difference Result 138 states and 328 transitions. [2020-09-11 15:08:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:08:33,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 15:08:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:08:33,071 INFO L225 Difference]: With dead ends: 138 [2020-09-11 15:08:33,071 INFO L226 Difference]: Without dead ends: 138 [2020-09-11 15:08:33,072 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 [2020-09-11 15:08:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-11 15:08:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-09-11 15:08:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-11 15:08:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 328 transitions. [2020-09-11 15:08:33,080 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 328 transitions. Word has length 11 [2020-09-11 15:08:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:08:33,080 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 328 transitions. [2020-09-11 15:08:33,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:08:33,081 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 328 transitions. [2020-09-11 15:08:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:08:33,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:08:33,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:08:33,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:08:33,082 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:08:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:08:33,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1787779324, now seen corresponding path program 1 times [2020-09-11 15:08:33,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:08:33,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305716943] [2020-09-11 15:08:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:08:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:08:33,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:08:33,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305716943] [2020-09-11 15:08:33,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:08:33,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:08:33,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451898391] [2020-09-11 15:08:33,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:08:33,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:08:33,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:08:33,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:08:33,138 INFO L87 Difference]: Start difference. First operand 138 states and 328 transitions. Second operand 3 states. [2020-09-11 15:08:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:08:33,151 INFO L93 Difference]: Finished difference Result 170 states and 400 transitions. [2020-09-11 15:08:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:08:33,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-11 15:08:33,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:08:33,153 INFO L225 Difference]: With dead ends: 170 [2020-09-11 15:08:33,153 INFO L226 Difference]: Without dead ends: 80 [2020-09-11 15:08:33,154 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 [2020-09-11 15:08:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-11 15:08:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-11 15:08:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-11 15:08:33,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-09-11 15:08:33,158 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-09-11 15:08:33,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:08:33,159 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-09-11 15:08:33,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:08:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-09-11 15:08:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:08:33,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:08:33,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:08:33,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:08:33,161 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:08:33,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:08:33,161 INFO L82 PathProgramCache]: Analyzing trace with hash 413447767, now seen corresponding path program 1 times [2020-09-11 15:08:33,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:08:33,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397479957] [2020-09-11 15:08:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:08:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:08:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:08:33,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397479957] [2020-09-11 15:08:33,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:08:33,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:08:33,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518640291] [2020-09-11 15:08:33,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:08:33,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:08:33,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:08:33,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:08:33,244 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand 4 states. [2020-09-11 15:08:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:08:33,271 INFO L93 Difference]: Finished difference Result 104 states and 232 transitions. [2020-09-11 15:08:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:08:33,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 15:08:33,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:08:33,272 INFO L225 Difference]: With dead ends: 104 [2020-09-11 15:08:33,272 INFO L226 Difference]: Without dead ends: 68 [2020-09-11 15:08:33,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:08:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-11 15:08:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-11 15:08:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-11 15:08:33,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-09-11 15:08:33,277 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-09-11 15:08:33,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:08:33,277 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-09-11 15:08:33,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:08:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-09-11 15:08:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:08:33,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:08:33,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:08:33,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:08:33,279 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:08:33,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:08:33,279 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 2 times [2020-09-11 15:08:33,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:08:33,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846097180] [2020-09-11 15:08:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:08:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:08:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:08:33,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846097180] [2020-09-11 15:08:33,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:08:33,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:08:33,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488425335] [2020-09-11 15:08:33,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:08:33,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:08:33,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:08:33,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:08:33,363 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-09-11 15:08:33,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:08:33,404 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-09-11 15:08:33,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:08:33,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 15:08:33,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:08:33,405 INFO L225 Difference]: With dead ends: 81 [2020-09-11 15:08:33,406 INFO L226 Difference]: Without dead ends: 59 [2020-09-11 15:08:33,406 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 [2020-09-11 15:08:33,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-11 15:08:33,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-11 15:08:33,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-11 15:08:33,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-09-11 15:08:33,409 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-09-11 15:08:33,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:08:33,410 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-09-11 15:08:33,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:08:33,410 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-09-11 15:08:33,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:08:33,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:08:33,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:08:33,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:08:33,411 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:08:33,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:08:33,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1574125730, now seen corresponding path program 1 times [2020-09-11 15:08:33,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:08:33,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786341135] [2020-09-11 15:08:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:08:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:08:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:08:33,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786341135] [2020-09-11 15:08:33,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:08:33,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:08:33,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229678758] [2020-09-11 15:08:33,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:08:33,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:08:33,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:08:33,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:08:33,492 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-09-11 15:08:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:08:33,534 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-09-11 15:08:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:08:33,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-11 15:08:33,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:08:33,535 INFO L225 Difference]: With dead ends: 60 [2020-09-11 15:08:33,535 INFO L226 Difference]: Without dead ends: 45 [2020-09-11 15:08:33,536 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 [2020-09-11 15:08:33,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-11 15:08:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-11 15:08:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-11 15:08:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-09-11 15:08:33,538 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-09-11 15:08:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:08:33,539 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-09-11 15:08:33,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:08:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-09-11 15:08:33,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:08:33,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:08:33,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:08:33,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:08:33,540 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:08:33,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:08:33,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-09-11 15:08:33,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:08:33,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781900633] [2020-09-11 15:08:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:08:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:08:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:08:33,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781900633] [2020-09-11 15:08:33,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:08:33,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:08:33,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299249762] [2020-09-11 15:08:33,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:08:33,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:08:33,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:08:33,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:08:33,618 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-09-11 15:08:33,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:08:33,665 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-09-11 15:08:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:08:33,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-11 15:08:33,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:08:33,666 INFO L225 Difference]: With dead ends: 42 [2020-09-11 15:08:33,667 INFO L226 Difference]: Without dead ends: 36 [2020-09-11 15:08:33,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:08:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-11 15:08:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-11 15:08:33,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-11 15:08:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-11 15:08:33,669 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-11 15:08:33,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:08:33,670 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-11 15:08:33,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:08:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-11 15:08:33,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:08:33,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:08:33,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:08:33,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:08:33,671 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:08:33,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:08:33,671 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-09-11 15:08:33,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:08:33,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203440285] [2020-09-11 15:08:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:08:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:08:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:08:33,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203440285] [2020-09-11 15:08:33,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:08:33,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:08:33,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220920958] [2020-09-11 15:08:33,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:08:33,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:08:33,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:08:33,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:08:33,716 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-09-11 15:08:33,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:08:33,720 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-11 15:08:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:08:33,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-11 15:08:33,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:08:33,721 INFO L225 Difference]: With dead ends: 35 [2020-09-11 15:08:33,721 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:08:33,722 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 [2020-09-11 15:08:33,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:08:33,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:08:33,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:08:33,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:08:33,723 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 15:08:33,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:08:33,723 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:08:33,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:08:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:08:33,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:08:33,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 15:08:33,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:08:33 BasicIcfg [2020-09-11 15:08:33,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:08:33,731 INFO L168 Benchmark]: Toolchain (without parser) took 5200.78 ms. Allocated memory was 146.3 MB in the beginning and 249.6 MB in the end (delta: 103.3 MB). Free memory was 101.6 MB in the beginning and 150.1 MB in the end (delta: -48.5 MB). Peak memory consumption was 54.8 MB. Max. memory is 7.1 GB. [2020-09-11 15:08:33,731 INFO L168 Benchmark]: CDTParser took 1.65 ms. Allocated memory is still 146.3 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:08:33,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 879.39 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 161.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:08:33,733 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.02 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:08:33,734 INFO L168 Benchmark]: Boogie Preprocessor took 31.73 ms. Allocated memory is still 203.4 MB. Free memory was 159.2 MB in the beginning and 157.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:08:33,735 INFO L168 Benchmark]: RCFGBuilder took 527.98 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 135.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-11 15:08:33,736 INFO L168 Benchmark]: TraceAbstraction took 3688.61 ms. Allocated memory was 203.4 MB in the beginning and 249.6 MB in the end (delta: 46.1 MB). Free memory was 135.3 MB in the beginning and 150.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:08:33,740 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.65 ms. Allocated memory is still 146.3 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 879.39 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 161.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.02 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.73 ms. Allocated memory is still 203.4 MB. Free memory was 159.2 MB in the beginning and 157.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 527.98 ms. Allocated memory is still 203.4 MB. Free memory was 157.8 MB in the beginning and 135.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3688.61 ms. Allocated memory was 203.4 MB in the beginning and 249.6 MB in the end (delta: 46.1 MB). Free memory was 135.3 MB in the beginning and 150.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 673 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 193 SDtfs, 133 SDslu, 201 SDs, 0 SdLazy, 127 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3658 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...