/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:08:45,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:08:45,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:08:45,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:08:45,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:08:45,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:08:45,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:08:45,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:08:45,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:08:45,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:08:45,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:08:45,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:08:45,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:08:45,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:08:45,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:08:45,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:08:45,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:08:45,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:08:45,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:08:45,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:08:45,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:08:45,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:08:45,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:08:45,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:08:45,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:08:45,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:08:45,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:08:45,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:08:45,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:08:45,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:08:45,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:08:45,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:08:45,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:08:45,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:08:45,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:08:45,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:08:45,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:08:45,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:08:45,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:08:45,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:08:45,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:08:45,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:08:45,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:08:45,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:08:45,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:08:45,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:08:45,841 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:08:45,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:08:45,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:08:45,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:08:45,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:08:45,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:08:45,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:08:45,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:08:45,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:08:45,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:08:45,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:08:45,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:08:45,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:08:45,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:08:45,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:08:45,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:08:45,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:08:45,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:08:45,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:08:45,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:08:45,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:08:45,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:08:45,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:08:45,846 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:08:45,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:08:46,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:08:46,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:08:46,121 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:08:46,122 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:08:46,123 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:08:46,124 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-10-16 12:08:46,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b589cbe7/8f68fb123d7748ad93058b6bb32b255c/FLAG3c0cd8efb [2020-10-16 12:08:46,706 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:08:46,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-10-16 12:08:46,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b589cbe7/8f68fb123d7748ad93058b6bb32b255c/FLAG3c0cd8efb [2020-10-16 12:08:47,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b589cbe7/8f68fb123d7748ad93058b6bb32b255c [2020-10-16 12:08:47,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:08:47,031 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:08:47,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:08:47,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:08:47,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:08:47,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:08:47" (1/1) ... [2020-10-16 12:08:47,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3dc4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47, skipping insertion in model container [2020-10-16 12:08:47,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:08:47" (1/1) ... [2020-10-16 12:08:47,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:08:47,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:08:47,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:08:47,598 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:08:47,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:08:47,737 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:08:47,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47 WrapperNode [2020-10-16 12:08:47,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:08:47,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:08:47,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:08:47,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:08:47,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47" (1/1) ... [2020-10-16 12:08:47,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47" (1/1) ... [2020-10-16 12:08:47,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:08:47,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:08:47,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:08:47,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:08:47,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47" (1/1) ... [2020-10-16 12:08:47,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47" (1/1) ... [2020-10-16 12:08:47,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47" (1/1) ... [2020-10-16 12:08:47,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47" (1/1) ... [2020-10-16 12:08:47,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47" (1/1) ... [2020-10-16 12:08:47,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47" (1/1) ... [2020-10-16 12:08:47,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47" (1/1) ... [2020-10-16 12:08:47,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:08:47,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:08:47,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:08:47,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:08:47,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47" (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 12:08:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:08:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:08:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:08:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:08:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 12:08:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 12:08:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 12:08:47,918 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 12:08:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 12:08:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 12:08:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:08:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:08:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:08:47,922 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 12:08:48,292 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:08:48,292 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:08:48,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:08:48 BoogieIcfgContainer [2020-10-16 12:08:48,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:08:48,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:08:48,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:08:48,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:08:48,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:08:47" (1/3) ... [2020-10-16 12:08:48,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27008c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:08:48, skipping insertion in model container [2020-10-16 12:08:48,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:08:47" (2/3) ... [2020-10-16 12:08:48,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27008c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:08:48, skipping insertion in model container [2020-10-16 12:08:48,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:08:48" (3/3) ... [2020-10-16 12:08:48,307 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-10-16 12:08:48,317 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:08:48,317 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:08:48,323 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:08:48,324 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:08:48,350 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,350 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,350 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,351 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,351 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,352 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,353 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,353 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,354 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,354 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,355 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,355 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,355 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,359 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,360 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,360 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,366 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,366 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,367 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,367 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,372 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,373 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,373 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:08:48,375 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:08:48,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:08:48,409 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:08:48,409 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:08:48,409 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:08:48,409 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:08:48,409 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:08:48,410 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:08:48,410 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:08:48,410 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:08:48,423 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:08:48,424 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 12:08:48,426 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 12:08:48,428 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 12:08:48,470 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 12:08:48,470 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:08:48,476 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 12:08:48,479 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 12:08:49,775 INFO L132 LiptonReduction]: Checked pairs total: 2407 [2020-10-16 12:08:49,775 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-16 12:08:49,782 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-16 12:08:49,807 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 12:08:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 12:08:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:08:49,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:49,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:49,818 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:49,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:49,823 INFO L82 PathProgramCache]: Analyzing trace with hash 573122436, now seen corresponding path program 1 times [2020-10-16 12:08:49,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:49,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131746200] [2020-10-16 12:08:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:50,038 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 12:08:50,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131746200] [2020-10-16 12:08:50,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:50,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:08:50,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509993360] [2020-10-16 12:08:50,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:08:50,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:50,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:08:50,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:08:50,062 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 12:08:50,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:50,105 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-16 12:08:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:08:50,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:08:50,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:50,122 INFO L225 Difference]: With dead ends: 290 [2020-10-16 12:08:50,122 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 12:08:50,123 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 12:08:50,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 12:08:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-16 12:08:50,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-16 12:08:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-16 12:08:50,196 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-16 12:08:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:50,197 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-16 12:08:50,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:08:50,198 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-16 12:08:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:08:50,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:50,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:50,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:08:50,200 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:50,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:50,200 INFO L82 PathProgramCache]: Analyzing trace with hash 572259518, now seen corresponding path program 1 times [2020-10-16 12:08:50,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:50,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672400393] [2020-10-16 12:08:50,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:50,278 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 12:08:50,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672400393] [2020-10-16 12:08:50,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:50,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:08:50,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099507046] [2020-10-16 12:08:50,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:08:50,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:50,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:08:50,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:08:50,282 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-16 12:08:50,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:50,291 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-10-16 12:08:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:08:50,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 12:08:50,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:50,294 INFO L225 Difference]: With dead ends: 212 [2020-10-16 12:08:50,294 INFO L226 Difference]: Without dead ends: 212 [2020-10-16 12:08:50,295 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 12:08:50,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-16 12:08:50,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-10-16 12:08:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-16 12:08:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-10-16 12:08:50,311 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-10-16 12:08:50,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:50,312 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-10-16 12:08:50,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:08:50,312 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-10-16 12:08:50,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:08:50,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:50,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:50,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:08:50,314 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:50,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:50,315 INFO L82 PathProgramCache]: Analyzing trace with hash 560175129, now seen corresponding path program 1 times [2020-10-16 12:08:50,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:50,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336041718] [2020-10-16 12:08:50,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:50,390 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 12:08:50,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336041718] [2020-10-16 12:08:50,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:50,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:08:50,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347375847] [2020-10-16 12:08:50,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:08:50,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:50,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:08:50,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:08:50,392 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 4 states. [2020-10-16 12:08:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:50,414 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-16 12:08:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:08:50,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 12:08:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:50,417 INFO L225 Difference]: With dead ends: 242 [2020-10-16 12:08:50,417 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 12:08:50,417 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 12:08:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 12:08:50,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-16 12:08:50,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 12:08:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-16 12:08:50,427 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-10-16 12:08:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:50,428 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-16 12:08:50,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:08:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-16 12:08:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:08:50,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:50,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:50,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:08:50,430 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:50,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1242480203, now seen corresponding path program 1 times [2020-10-16 12:08:50,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:50,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601821841] [2020-10-16 12:08:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:50,507 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 12:08:50,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601821841] [2020-10-16 12:08:50,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:50,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:08:50,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820981669] [2020-10-16 12:08:50,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:08:50,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:50,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:08:50,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:08:50,511 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-16 12:08:50,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:50,532 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-10-16 12:08:50,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:08:50,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 12:08:50,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:50,534 INFO L225 Difference]: With dead ends: 144 [2020-10-16 12:08:50,534 INFO L226 Difference]: Without dead ends: 144 [2020-10-16 12:08:50,535 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 12:08:50,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-16 12:08:50,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-16 12:08:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-16 12:08:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-16 12:08:50,552 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-10-16 12:08:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:50,552 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-16 12:08:50,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:08:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-16 12:08:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:08:50,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:50,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:50,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:08:50,556 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:50,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:50,557 INFO L82 PathProgramCache]: Analyzing trace with hash 389651423, now seen corresponding path program 1 times [2020-10-16 12:08:50,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:50,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528847954] [2020-10-16 12:08:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:50,673 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 12:08:50,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528847954] [2020-10-16 12:08:50,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:50,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:08:50,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737592783] [2020-10-16 12:08:50,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:08:50,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:50,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:08:50,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:08:50,676 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-10-16 12:08:50,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:50,704 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-10-16 12:08:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:08:50,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:08:50,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:50,706 INFO L225 Difference]: With dead ends: 164 [2020-10-16 12:08:50,706 INFO L226 Difference]: Without dead ends: 124 [2020-10-16 12:08:50,707 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 12:08:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-16 12:08:50,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-16 12:08:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-16 12:08:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-10-16 12:08:50,713 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-10-16 12:08:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:50,714 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-10-16 12:08:50,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:08:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-10-16 12:08:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:08:50,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:50,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:50,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:08:50,715 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:50,716 INFO L82 PathProgramCache]: Analyzing trace with hash -806373780, now seen corresponding path program 1 times [2020-10-16 12:08:50,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:50,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745372738] [2020-10-16 12:08:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:50,787 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 12:08:50,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745372738] [2020-10-16 12:08:50,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:50,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:08:50,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012530226] [2020-10-16 12:08:50,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:08:50,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:50,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:08:50,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:08:50,790 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-10-16 12:08:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:50,835 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-10-16 12:08:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:08:50,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 12:08:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:50,837 INFO L225 Difference]: With dead ends: 122 [2020-10-16 12:08:50,837 INFO L226 Difference]: Without dead ends: 97 [2020-10-16 12:08:50,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:08:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-16 12:08:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-16 12:08:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-16 12:08:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-16 12:08:50,845 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-10-16 12:08:50,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:50,845 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-16 12:08:50,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:08:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-16 12:08:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 12:08:50,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:50,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:50,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:08:50,847 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:50,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:50,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1341104517, now seen corresponding path program 1 times [2020-10-16 12:08:50,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:50,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338914436] [2020-10-16 12:08:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:50,887 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 12:08:50,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338914436] [2020-10-16 12:08:50,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:50,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:08:50,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541698386] [2020-10-16 12:08:50,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:08:50,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:50,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:08:50,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:08:50,889 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-10-16 12:08:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:50,901 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-10-16 12:08:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:08:50,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-16 12:08:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:50,902 INFO L225 Difference]: With dead ends: 115 [2020-10-16 12:08:50,903 INFO L226 Difference]: Without dead ends: 98 [2020-10-16 12:08:50,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:08:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-16 12:08:50,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-16 12:08:50,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 12:08:50,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-16 12:08:50,908 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-10-16 12:08:50,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:50,909 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-16 12:08:50,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:08:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-16 12:08:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 12:08:50,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:50,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:50,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:08:50,910 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:50,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1362110025, now seen corresponding path program 1 times [2020-10-16 12:08:50,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:50,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046225410] [2020-10-16 12:08:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:51,039 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 12:08:51,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046225410] [2020-10-16 12:08:51,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:51,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:08:51,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864276702] [2020-10-16 12:08:51,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:08:51,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:51,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:08:51,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:08:51,042 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-10-16 12:08:51,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:51,101 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-16 12:08:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:08:51,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-16 12:08:51,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:51,103 INFO L225 Difference]: With dead ends: 92 [2020-10-16 12:08:51,103 INFO L226 Difference]: Without dead ends: 36 [2020-10-16 12:08:51,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:08:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-16 12:08:51,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-16 12:08:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 12:08:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-16 12:08:51,106 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-16 12:08:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:51,106 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-16 12:08:51,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:08:51,107 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-16 12:08:51,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 12:08:51,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:08:51,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:08:51,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:08:51,111 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:08:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:08:51,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1202444330, now seen corresponding path program 1 times [2020-10-16 12:08:51,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:08:51,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245726708] [2020-10-16 12:08:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:08:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:08:51,184 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 12:08:51,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245726708] [2020-10-16 12:08:51,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:08:51,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:08:51,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851846670] [2020-10-16 12:08:51,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:08:51,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:08:51,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:08:51,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:08:51,189 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-16 12:08:51,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:08:51,193 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-16 12:08:51,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:08:51,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 12:08:51,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:08:51,194 INFO L225 Difference]: With dead ends: 35 [2020-10-16 12:08:51,194 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:08:51,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:08:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:08:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:08:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:08:51,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:08:51,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 12:08:51,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:08:51,197 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:08:51,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:08:51,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:08:51,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:08:51,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 12:08:51,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:08:51 BasicIcfg [2020-10-16 12:08:51,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:08:51,208 INFO L168 Benchmark]: Toolchain (without parser) took 4174.92 ms. Allocated memory was 140.5 MB in the beginning and 248.5 MB in the end (delta: 108.0 MB). Free memory was 101.8 MB in the beginning and 191.5 MB in the end (delta: -89.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:51,209 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-16 12:08:51,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.90 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 157.9 MB in the end (delta: -56.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:51,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.70 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:51,217 INFO L168 Benchmark]: Boogie Preprocessor took 28.13 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 154.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:51,218 INFO L168 Benchmark]: RCFGBuilder took 451.92 ms. Allocated memory is still 203.4 MB. Free memory was 154.6 MB in the beginning and 132.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-16 12:08:51,219 INFO L168 Benchmark]: TraceAbstraction took 2906.16 ms. Allocated memory was 203.4 MB in the beginning and 248.5 MB in the end (delta: 45.1 MB). Free memory was 131.7 MB in the beginning and 191.5 MB in the end (delta: -59.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:08:51,232 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 706.90 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 157.9 MB in the end (delta: -56.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 74.70 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.13 ms. Allocated memory is still 203.4 MB. Free memory was 155.9 MB in the beginning and 154.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.92 ms. Allocated memory is still 203.4 MB. Free memory was 154.6 MB in the beginning and 132.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2906.16 ms. Allocated memory was 203.4 MB in the beginning and 248.5 MB in the end (delta: 45.1 MB). Free memory was 131.7 MB in the beginning and 191.5 MB in the end (delta: -59.8 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 657 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 38 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 2407 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 161 SDtfs, 126 SDslu, 180 SDs, 0 SdLazy, 96 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 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, 9 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...