/usr/bin/java -Xmx16000000000 -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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:07:58,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:07:58,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:07:58,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:07:58,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:07:58,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:07:58,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:07:58,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:07:58,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:07:58,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:07:58,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:07:58,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:07:58,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:07:58,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:07:58,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:07:58,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:07:58,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:07:58,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:07:58,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:07:58,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:07:58,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:07:58,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:07:58,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:07:58,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:07:58,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:07:58,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:07:58,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:07:58,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:07:58,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:07:58,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:07:58,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:07:58,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:07:58,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:07:58,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:07:58,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:07:58,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:07:58,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:07:58,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:07:58,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:07:58,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:07:58,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:07:58,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:07:58,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:07:58,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:07:58,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:07:58,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:07:58,896 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:07:58,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:07:58,896 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:07:58,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:07:58,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:07:58,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:07:58,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:07:58,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:07:58,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:07:58,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:07:58,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:07:58,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:07:58,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:07:58,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:07:58,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:07:58,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:07:58,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:07:58,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:07:58,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:07:58,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:07:58,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:07:58,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:07:58,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:07:58,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:07:58,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:07:59,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:07:59,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:07:59,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:07:59,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:07:59,212 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:07:59,213 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-10-16 05:07:59,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4270e7002/261f8517e7684bcfa42240a1e02cd982/FLAG71adba029 [2020-10-16 05:07:59,765 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:07:59,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-10-16 05:07:59,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4270e7002/261f8517e7684bcfa42240a1e02cd982/FLAG71adba029 [2020-10-16 05:08:00,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4270e7002/261f8517e7684bcfa42240a1e02cd982 [2020-10-16 05:08:00,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:08:00,135 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:08:00,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:08:00,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:08:00,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:08:00,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:00,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6ec508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00, skipping insertion in model container [2020-10-16 05:08:00,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:00,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:08:00,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:08:00,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:08:00,783 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:08:00,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:08:00,959 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:08:00,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00 WrapperNode [2020-10-16 05:08:00,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:08:00,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:08:00,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:08:00,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:08:00,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:01,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:01,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:08:01,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:08:01,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:08:01,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:08:01,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:01,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:01,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:01,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:01,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:01,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:01,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... [2020-10-16 05:08:01,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:08:01,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:08:01,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:08:01,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:08:01,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:08:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:08:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:08:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:08:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:08:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:08:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:08:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:08:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:08:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:08:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:08:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:08:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:08:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:08:01,125 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 05:08:01,471 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:08:01,472 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:08:01,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:08:01 BoogieIcfgContainer [2020-10-16 05:08:01,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:08:01,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:08:01,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:08:01,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:08:01,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:08:00" (1/3) ... [2020-10-16 05:08:01,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b9e595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:08:01, skipping insertion in model container [2020-10-16 05:08:01,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:08:00" (2/3) ... [2020-10-16 05:08:01,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b9e595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:08:01, skipping insertion in model container [2020-10-16 05:08:01,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:08:01" (3/3) ... [2020-10-16 05:08:01,482 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-10-16 05:08:01,493 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:08:01,500 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:08:01,501 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:08:01,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,526 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,526 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,530 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,530 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,534 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,534 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,535 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,540 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,540 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,544 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,544 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:08:01,561 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:08:01,582 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:08:01,582 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:08:01,582 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:08:01,582 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:08:01,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:08:01,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:08:01,583 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:08:01,583 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:08:01,596 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:08:01,636 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 05:08:01,636 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:01,641 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 05:08:01,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:08:01,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:01,652 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:08:01,655 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:01,657 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:01,657 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 05:08:01,675 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 05:08:01,676 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:01,676 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:08:01,679 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:08:03,034 INFO L132 LiptonReduction]: Checked pairs total: 1636 [2020-10-16 05:08:03,034 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 05:08:03,037 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1387 [2020-10-16 05:08:03,045 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 05:08:03,045 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:03,046 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,047 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,047 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1555680932, now seen corresponding path program 1 times [2020-10-16 05:08:03,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338249730] [2020-10-16 05:08:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,250 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 05:08:03,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338249730] [2020-10-16 05:08:03,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:08:03,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303308865] [2020-10-16 05:08:03,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:08:03,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:08:03,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:08:03,290 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 05:08:03,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 05:08:03,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 05:08:03,297 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,357 INFO L129 PetriNetUnfolder]: 24/77 cut-off events. [2020-10-16 05:08:03,358 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:08:03,360 INFO L80 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 77 events. 24/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 263 event pairs, 18 based on Foata normal form. 2/70 useless extension candidates. Maximal degree in co-relation 124. Up to 45 conditions per place. [2020-10-16 05:08:03,363 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 6 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2020-10-16 05:08:03,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 67 flow [2020-10-16 05:08:03,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:08:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:08:03,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2020-10-16 05:08:03,388 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8244047619047619 [2020-10-16 05:08:03,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2020-10-16 05:08:03,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2020-10-16 05:08:03,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2020-10-16 05:08:03,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:08:03,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:08:03,415 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:08:03,417 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 277 transitions. [2020-10-16 05:08:03,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 67 flow [2020-10-16 05:08:03,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 64 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:08:03,425 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2020-10-16 05:08:03,428 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2020-10-16 05:08:03,429 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:08:03,430 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2020-10-16 05:08:03,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:08:03,433 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,433 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:08:03,440 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,441 INFO L82 PathProgramCache]: Analyzing trace with hash -981469542, now seen corresponding path program 1 times [2020-10-16 05:08:03,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222165326] [2020-10-16 05:08:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,555 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 05:08:03,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222165326] [2020-10-16 05:08:03,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:08:03,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277721970] [2020-10-16 05:08:03,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:08:03,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:08:03,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:08:03,564 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 05:08:03,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 05:08:03,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 05:08:03,565 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,593 INFO L129 PetriNetUnfolder]: 16/68 cut-off events. [2020-10-16 05:08:03,594 INFO L130 PetriNetUnfolder]: For 16/51 co-relation queries the response was YES. [2020-10-16 05:08:03,594 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 68 events. 16/68 cut-off events. For 16/51 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 270 event pairs, 6 based on Foata normal form. 7/67 useless extension candidates. Maximal degree in co-relation 133. Up to 25 conditions per place. [2020-10-16 05:08:03,595 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 7 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2020-10-16 05:08:03,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 83 flow [2020-10-16 05:08:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:08:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:08:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2020-10-16 05:08:03,598 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8244047619047619 [2020-10-16 05:08:03,598 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2020-10-16 05:08:03,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2020-10-16 05:08:03,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2020-10-16 05:08:03,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:08:03,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:08:03,601 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:08:03,601 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 277 transitions. [2020-10-16 05:08:03,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 83 flow [2020-10-16 05:08:03,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:08:03,603 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 67 flow [2020-10-16 05:08:03,603 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2020-10-16 05:08:03,604 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 05:08:03,604 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 67 flow [2020-10-16 05:08:03,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:08:03,605 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,605 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:08:03,605 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,606 INFO L82 PathProgramCache]: Analyzing trace with hash -999912155, now seen corresponding path program 1 times [2020-10-16 05:08:03,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970716603] [2020-10-16 05:08:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,663 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 05:08:03,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970716603] [2020-10-16 05:08:03,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:08:03,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359084876] [2020-10-16 05:08:03,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:08:03,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:08:03,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:08:03,667 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 112 [2020-10-16 05:08:03,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 67 flow. Second operand 3 states. [2020-10-16 05:08:03,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 112 [2020-10-16 05:08:03,668 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,678 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2020-10-16 05:08:03,679 INFO L130 PetriNetUnfolder]: For 26/38 co-relation queries the response was YES. [2020-10-16 05:08:03,679 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 27 events. 0/27 cut-off events. For 26/38 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2020-10-16 05:08:03,679 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 05:08:03,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 19 transitions, 73 flow [2020-10-16 05:08:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:08:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:08:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 05:08:03,681 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2020-10-16 05:08:03,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 05:08:03,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 05:08:03,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 05:08:03,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:08:03,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:08:03,684 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:08:03,685 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 67 flow. Second operand 3 states and 283 transitions. [2020-10-16 05:08:03,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 19 transitions, 73 flow [2020-10-16 05:08:03,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 68 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 05:08:03,686 INFO L241 Difference]: Finished difference. Result has 31 places, 19 transitions, 70 flow [2020-10-16 05:08:03,687 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2020-10-16 05:08:03,687 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 05:08:03,687 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 70 flow [2020-10-16 05:08:03,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:08:03,687 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,687 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:08:03,688 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,688 INFO L82 PathProgramCache]: Analyzing trace with hash -932506608, now seen corresponding path program 1 times [2020-10-16 05:08:03,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296300374] [2020-10-16 05:08:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,736 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 05:08:03,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296300374] [2020-10-16 05:08:03,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:08:03,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61755998] [2020-10-16 05:08:03,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:03,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:03,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:03,740 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2020-10-16 05:08:03,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 70 flow. Second operand 4 states. [2020-10-16 05:08:03,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2020-10-16 05:08:03,741 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,769 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2020-10-16 05:08:03,769 INFO L130 PetriNetUnfolder]: For 43/52 co-relation queries the response was YES. [2020-10-16 05:08:03,770 INFO L80 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 37 events. 0/37 cut-off events. For 43/52 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 102 event pairs, 0 based on Foata normal form. 4/40 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2020-10-16 05:08:03,770 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 1 selfloop transitions, 3 changer transitions 1/20 dead transitions. [2020-10-16 05:08:03,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 20 transitions, 85 flow [2020-10-16 05:08:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:08:03,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:08:03,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2020-10-16 05:08:03,772 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8013392857142857 [2020-10-16 05:08:03,772 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 359 transitions. [2020-10-16 05:08:03,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 359 transitions. [2020-10-16 05:08:03,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 359 transitions. [2020-10-16 05:08:03,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:08:03,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:08:03,775 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:08:03,776 INFO L185 Difference]: Start difference. First operand has 31 places, 19 transitions, 70 flow. Second operand 4 states and 359 transitions. [2020-10-16 05:08:03,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 20 transitions, 85 flow [2020-10-16 05:08:03,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 79 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:03,777 INFO L241 Difference]: Finished difference. Result has 34 places, 19 transitions, 80 flow [2020-10-16 05:08:03,778 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=19} [2020-10-16 05:08:03,778 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 05:08:03,778 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 19 transitions, 80 flow [2020-10-16 05:08:03,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:03,778 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,779 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:08:03,779 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1155606458, now seen corresponding path program 1 times [2020-10-16 05:08:03,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470884643] [2020-10-16 05:08:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,817 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 05:08:03,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470884643] [2020-10-16 05:08:03,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:08:03,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878359949] [2020-10-16 05:08:03,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:08:03,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:08:03,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:08:03,821 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2020-10-16 05:08:03,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 19 transitions, 80 flow. Second operand 3 states. [2020-10-16 05:08:03,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2020-10-16 05:08:03,821 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,831 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2020-10-16 05:08:03,831 INFO L130 PetriNetUnfolder]: For 35/37 co-relation queries the response was YES. [2020-10-16 05:08:03,831 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 26 events. 0/26 cut-off events. For 35/37 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 55 event pairs, 0 based on Foata normal form. 3/29 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2020-10-16 05:08:03,831 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 2/19 dead transitions. [2020-10-16 05:08:03,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 19 transitions, 86 flow [2020-10-16 05:08:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:08:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:08:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 05:08:03,833 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8601190476190477 [2020-10-16 05:08:03,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 05:08:03,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 05:08:03,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 05:08:03,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:08:03,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:08:03,836 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:08:03,836 INFO L185 Difference]: Start difference. First operand has 34 places, 19 transitions, 80 flow. Second operand 3 states and 289 transitions. [2020-10-16 05:08:03,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 19 transitions, 86 flow [2020-10-16 05:08:03,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 19 transitions, 74 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:08:03,838 INFO L241 Difference]: Finished difference. Result has 33 places, 17 transitions, 66 flow [2020-10-16 05:08:03,838 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2020-10-16 05:08:03,839 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 05:08:03,839 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 66 flow [2020-10-16 05:08:03,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:08:03,839 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,839 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:08:03,840 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,840 INFO L82 PathProgramCache]: Analyzing trace with hash 198766454, now seen corresponding path program 1 times [2020-10-16 05:08:03,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760805707] [2020-10-16 05:08:03,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,888 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 05:08:03,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760805707] [2020-10-16 05:08:03,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:08:03,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913045794] [2020-10-16 05:08:03,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:03,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:03,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:03,891 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:03,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 66 flow. Second operand 4 states. [2020-10-16 05:08:03,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:03,892 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:03,930 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 05:08:03,930 INFO L130 PetriNetUnfolder]: For 159/170 co-relation queries the response was YES. [2020-10-16 05:08:03,931 INFO L80 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 69 events. 28/69 cut-off events. For 159/170 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 208 event pairs, 12 based on Foata normal form. 9/73 useless extension candidates. Maximal degree in co-relation 163. Up to 45 conditions per place. [2020-10-16 05:08:03,931 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 05:08:03,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 118 flow [2020-10-16 05:08:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:08:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:08:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2020-10-16 05:08:03,934 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7553571428571428 [2020-10-16 05:08:03,934 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2020-10-16 05:08:03,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2020-10-16 05:08:03,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:03,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2020-10-16 05:08:03,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:08:03,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:08:03,937 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:08:03,937 INFO L185 Difference]: Start difference. First operand has 33 places, 17 transitions, 66 flow. Second operand 5 states and 423 transitions. [2020-10-16 05:08:03,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 118 flow [2020-10-16 05:08:03,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 104 flow, removed 2 selfloop flow, removed 5 redundant places. [2020-10-16 05:08:03,939 INFO L241 Difference]: Finished difference. Result has 35 places, 20 transitions, 88 flow [2020-10-16 05:08:03,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2020-10-16 05:08:03,940 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 05:08:03,940 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 88 flow [2020-10-16 05:08:03,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:03,940 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:03,940 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:03,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:08:03,941 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:03,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:03,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1936482303, now seen corresponding path program 1 times [2020-10-16 05:08:03,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:03,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979949697] [2020-10-16 05:08:03,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:03,985 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 05:08:03,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979949697] [2020-10-16 05:08:03,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:03,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:03,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097549740] [2020-10-16 05:08:03,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:08:03,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:03,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:08:03,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:08:03,988 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:03,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 88 flow. Second operand 5 states. [2020-10-16 05:08:03,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:03,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:03,989 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:04,037 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 05:08:04,038 INFO L130 PetriNetUnfolder]: For 131/179 co-relation queries the response was YES. [2020-10-16 05:08:04,038 INFO L80 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 50 events. 16/50 cut-off events. For 131/179 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 2 based on Foata normal form. 17/65 useless extension candidates. Maximal degree in co-relation 171. Up to 35 conditions per place. [2020-10-16 05:08:04,039 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 05:08:04,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 184 flow [2020-10-16 05:08:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:08:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:08:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2020-10-16 05:08:04,041 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7544642857142857 [2020-10-16 05:08:04,041 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2020-10-16 05:08:04,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2020-10-16 05:08:04,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:04,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2020-10-16 05:08:04,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:08:04,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:08:04,045 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:08:04,045 INFO L185 Difference]: Start difference. First operand has 35 places, 20 transitions, 88 flow. Second operand 6 states and 507 transitions. [2020-10-16 05:08:04,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 184 flow [2020-10-16 05:08:04,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 178 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:08:04,047 INFO L241 Difference]: Finished difference. Result has 39 places, 23 transitions, 138 flow [2020-10-16 05:08:04,048 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2020-10-16 05:08:04,048 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2020-10-16 05:08:04,048 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 138 flow [2020-10-16 05:08:04,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:08:04,048 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:04,048 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:04,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:08:04,049 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:04,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:04,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1574717986, now seen corresponding path program 1 times [2020-10-16 05:08:04,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:04,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495195787] [2020-10-16 05:08:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:04,097 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 05:08:04,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495195787] [2020-10-16 05:08:04,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:04,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:08:04,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068174986] [2020-10-16 05:08:04,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:08:04,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:04,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:08:04,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:08:04,101 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:08:04,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 138 flow. Second operand 6 states. [2020-10-16 05:08:04,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:04,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:08:04,102 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:04,152 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 05:08:04,153 INFO L130 PetriNetUnfolder]: For 127/167 co-relation queries the response was YES. [2020-10-16 05:08:04,153 INFO L80 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 32 events. 7/32 cut-off events. For 127/167 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 0 based on Foata normal form. 16/47 useless extension candidates. Maximal degree in co-relation 125. Up to 20 conditions per place. [2020-10-16 05:08:04,154 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 05:08:04,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 27 transitions, 206 flow [2020-10-16 05:08:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:08:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:08:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2020-10-16 05:08:04,156 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7461734693877551 [2020-10-16 05:08:04,156 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2020-10-16 05:08:04,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2020-10-16 05:08:04,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:04,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2020-10-16 05:08:04,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:08:04,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:08:04,160 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:08:04,161 INFO L185 Difference]: Start difference. First operand has 39 places, 23 transitions, 138 flow. Second operand 7 states and 585 transitions. [2020-10-16 05:08:04,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 27 transitions, 206 flow [2020-10-16 05:08:04,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 170 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 05:08:04,164 INFO L241 Difference]: Finished difference. Result has 42 places, 23 transitions, 140 flow [2020-10-16 05:08:04,164 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2020-10-16 05:08:04,164 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2020-10-16 05:08:04,164 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 140 flow [2020-10-16 05:08:04,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:08:04,164 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:08:04,165 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:08:04,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:08:04,165 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:08:04,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:08:04,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1745170304, now seen corresponding path program 1 times [2020-10-16 05:08:04,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:08:04,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382623943] [2020-10-16 05:08:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:08:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:08:04,197 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 05:08:04,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382623943] [2020-10-16 05:08:04,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:08:04,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:08:04,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784915020] [2020-10-16 05:08:04,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:08:04,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:08:04,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:08:04,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:08:04,200 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:08:04,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 140 flow. Second operand 4 states. [2020-10-16 05:08:04,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:08:04,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:08:04,201 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:08:04,219 INFO L129 PetriNetUnfolder]: 8/35 cut-off events. [2020-10-16 05:08:04,219 INFO L130 PetriNetUnfolder]: For 66/73 co-relation queries the response was YES. [2020-10-16 05:08:04,220 INFO L80 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 35 events. 8/35 cut-off events. For 66/73 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 55 event pairs, 0 based on Foata normal form. 2/35 useless extension candidates. Maximal degree in co-relation 109. Up to 13 conditions per place. [2020-10-16 05:08:04,220 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2020-10-16 05:08:04,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 24 transitions, 148 flow [2020-10-16 05:08:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:08:04,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:08:04,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2020-10-16 05:08:04,222 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2020-10-16 05:08:04,222 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions. [2020-10-16 05:08:04,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions. [2020-10-16 05:08:04,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:08:04,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions. [2020-10-16 05:08:04,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:08:04,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:08:04,225 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:08:04,225 INFO L185 Difference]: Start difference. First operand has 42 places, 23 transitions, 140 flow. Second operand 4 states and 348 transitions. [2020-10-16 05:08:04,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 24 transitions, 148 flow [2020-10-16 05:08:04,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 24 transitions, 110 flow, removed 9 selfloop flow, removed 6 redundant places. [2020-10-16 05:08:04,227 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 05:08:04,227 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 05:08:04,227 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 05:08:04,227 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 05:08:04,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:08:04,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:08:04,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:08:04 BasicIcfg [2020-10-16 05:08:04,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:08:04,234 INFO L168 Benchmark]: Toolchain (without parser) took 4098.59 ms. Allocated memory was 251.7 MB in the beginning and 367.5 MB in the end (delta: 115.9 MB). Free memory was 206.8 MB in the beginning and 232.3 MB in the end (delta: -25.5 MB). Peak memory consumption was 90.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:04,235 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:08:04,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 824.68 ms. Allocated memory was 251.7 MB in the beginning and 312.5 MB in the end (delta: 60.8 MB). Free memory was 206.8 MB in the beginning and 263.4 MB in the end (delta: -56.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:04,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.91 ms. Allocated memory is still 312.5 MB. Free memory was 263.4 MB in the beginning and 260.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:04,237 INFO L168 Benchmark]: Boogie Preprocessor took 24.81 ms. Allocated memory is still 312.5 MB. Free memory was 260.9 MB in the beginning and 258.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:04,238 INFO L168 Benchmark]: RCFGBuilder took 411.73 ms. Allocated memory is still 312.5 MB. Free memory was 258.3 MB in the beginning and 236.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:04,239 INFO L168 Benchmark]: TraceAbstraction took 2755.89 ms. Allocated memory was 312.5 MB in the beginning and 367.5 MB in the end (delta: 55.1 MB). Free memory was 236.5 MB in the beginning and 232.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 59.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:08:04,243 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 824.68 ms. Allocated memory was 251.7 MB in the beginning and 312.5 MB in the end (delta: 60.8 MB). Free memory was 206.8 MB in the beginning and 263.4 MB in the end (delta: -56.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 75.91 ms. Allocated memory is still 312.5 MB. Free memory was 263.4 MB in the beginning and 260.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.81 ms. Allocated memory is still 312.5 MB. Free memory was 260.9 MB in the beginning and 258.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 411.73 ms. Allocated memory is still 312.5 MB. Free memory was 258.3 MB in the beginning and 236.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2755.89 ms. Allocated memory was 312.5 MB in the beginning and 367.5 MB in the end (delta: 55.1 MB). Free memory was 236.5 MB in the beginning and 232.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 59.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 620 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 42 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 42 TotalNumberOfCompositions, 1636 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 35 SDtfs, 16 SDslu, 14 SDs, 0 SdLazy, 125 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 3065 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...