/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:39:59,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:39:59,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:39:59,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:39:59,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:39:59,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:39:59,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:39:59,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:39:59,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:39:59,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:39:59,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:39:59,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:39:59,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:39:59,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:39:59,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:39:59,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:39:59,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:39:59,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:39:59,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:39:59,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:39:59,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:39:59,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:39:59,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:39:59,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:39:59,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:39:59,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:39:59,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:39:59,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:39:59,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:39:59,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:39:59,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:39:59,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:39:59,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:39:59,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:39:59,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:39:59,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:39:59,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:39:59,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:39:59,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:39:59,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:39:59,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:39:59,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:39:59,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:39:59,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:39:59,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:39:59,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:39:59,619 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:39:59,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:39:59,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:39:59,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:39:59,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:39:59,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:39:59,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:39:59,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:39:59,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:39:59,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:39:59,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:39:59,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:39:59,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:39:59,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:39:59,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:39:59,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:39:59,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:39:59,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:39:59,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:39:59,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:39:59,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:39:59,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:39:59,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:39:59,625 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:39:59,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:39:59,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:39:59,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:39:59,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:39:59,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:39:59,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:39:59,978 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:39:59,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-10-11 18:40:00,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7aabae5f/3cb32ab5b00c4102be3b633b766b3f3b/FLAG85272b9ce [2020-10-11 18:40:00,609 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:40:00,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-10-11 18:40:00,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7aabae5f/3cb32ab5b00c4102be3b633b766b3f3b/FLAG85272b9ce [2020-10-11 18:40:00,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7aabae5f/3cb32ab5b00c4102be3b633b766b3f3b [2020-10-11 18:40:00,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:40:00,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:40:00,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:40:00,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:40:00,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:40:00,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:40:00" (1/1) ... [2020-10-11 18:40:00,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ffe112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:00, skipping insertion in model container [2020-10-11 18:40:00,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:40:00" (1/1) ... [2020-10-11 18:40:00,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:40:00,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:40:01,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:40:01,472 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:40:01,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:40:01,595 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:40:01,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01 WrapperNode [2020-10-11 18:40:01,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:40:01,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:40:01,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:40:01,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:40:01,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01" (1/1) ... [2020-10-11 18:40:01,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01" (1/1) ... [2020-10-11 18:40:01,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:40:01,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:40:01,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:40:01,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:40:01,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01" (1/1) ... [2020-10-11 18:40:01,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01" (1/1) ... [2020-10-11 18:40:01,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01" (1/1) ... [2020-10-11 18:40:01,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01" (1/1) ... [2020-10-11 18:40:01,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01" (1/1) ... [2020-10-11 18:40:01,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01" (1/1) ... [2020-10-11 18:40:01,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01" (1/1) ... [2020-10-11 18:40:01,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:40:01,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:40:01,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:40:01,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:40:01,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01" (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 [2020-10-11 18:40:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:40:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:40:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:40:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:40:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:40:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:40:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:40:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:40:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:40:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:40:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:40:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:40:01,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:40:01,753 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:40:02,135 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:40:02,135 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:40:02,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:40:02 BoogieIcfgContainer [2020-10-11 18:40:02,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:40:02,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:40:02,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:40:02,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:40:02,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:40:00" (1/3) ... [2020-10-11 18:40:02,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7700ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:40:02, skipping insertion in model container [2020-10-11 18:40:02,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:40:01" (2/3) ... [2020-10-11 18:40:02,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7700ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:40:02, skipping insertion in model container [2020-10-11 18:40:02,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:40:02" (3/3) ... [2020-10-11 18:40:02,148 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-10-11 18:40:02,159 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:40:02,165 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:40:02,166 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:40:02,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,193 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,193 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,193 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,196 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,197 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,197 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,198 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,202 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,211 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,211 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,212 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,212 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,214 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,214 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,215 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,215 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:40:02,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:40:02,255 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:40:02,255 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:40:02,255 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:40:02,256 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:40:02,256 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:40:02,256 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:40:02,256 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:40:02,256 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:40:02,270 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:40:02,313 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 18:40:02,313 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:40:02,319 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:40:02,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:40:02,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-11 18:40:02,345 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-11 18:40:02,345 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:40:02,345 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:40:02,346 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:40:02,347 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:40:02,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:40:02,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1121550976, now seen corresponding path program 1 times [2020-10-11 18:40:02,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:40:02,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209366817] [2020-10-11 18:40:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:40:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:40:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:40:02,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209366817] [2020-10-11 18:40:02,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:40:02,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:40:02,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498447835] [2020-10-11 18:40:02,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:40:02,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:40:02,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:40:02,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:40:03,065 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:40:03,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 6 states. [2020-10-11 18:40:03,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:40:03,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:40:03,069 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:40:03,245 INFO L129 PetriNetUnfolder]: 3/70 cut-off events. [2020-10-11 18:40:03,246 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:40:03,246 INFO L80 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 70 events. 3/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 4/73 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2020-10-11 18:40:03,248 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 6 selfloop transitions, 2 changer transitions 11/65 dead transitions. [2020-10-11 18:40:03,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 175 flow [2020-10-11 18:40:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:40:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:40:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 562 transitions. [2020-10-11 18:40:03,268 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8920634920634921 [2020-10-11 18:40:03,268 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 562 transitions. [2020-10-11 18:40:03,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 562 transitions. [2020-10-11 18:40:03,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:40:03,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 562 transitions. [2020-10-11 18:40:03,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:40:03,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:40:03,289 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:40:03,292 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 562 transitions. [2020-10-11 18:40:03,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 175 flow [2020-10-11 18:40:03,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:40:03,302 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 134 flow [2020-10-11 18:40:03,305 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-11 18:40:03,306 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:40:03,306 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 134 flow [2020-10-11 18:40:03,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:40:03,306 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:40:03,307 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:40:03,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:40:03,307 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:40:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:40:03,308 INFO L82 PathProgramCache]: Analyzing trace with hash -166532991, now seen corresponding path program 1 times [2020-10-11 18:40:03,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:40:03,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894899679] [2020-10-11 18:40:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:40:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:40:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:40:03,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894899679] [2020-10-11 18:40:03,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:40:03,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:40:03,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069703413] [2020-10-11 18:40:03,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:40:03,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:40:03,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:40:03,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:40:03,685 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:40:03,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 134 flow. Second operand 7 states. [2020-10-11 18:40:03,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:40:03,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:40:03,686 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:40:03,842 INFO L129 PetriNetUnfolder]: 4/75 cut-off events. [2020-10-11 18:40:03,843 INFO L130 PetriNetUnfolder]: For 17/24 co-relation queries the response was YES. [2020-10-11 18:40:03,843 INFO L80 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 75 events. 4/75 cut-off events. For 17/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 2/77 useless extension candidates. Maximal degree in co-relation 122. Up to 7 conditions per place. [2020-10-11 18:40:03,844 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 6 selfloop transitions, 4 changer transitions 12/66 dead transitions. [2020-10-11 18:40:03,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 225 flow [2020-10-11 18:40:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:40:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:40:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 604 transitions. [2020-10-11 18:40:03,848 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8628571428571429 [2020-10-11 18:40:03,848 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 604 transitions. [2020-10-11 18:40:03,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 604 transitions. [2020-10-11 18:40:03,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:40:03,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 604 transitions. [2020-10-11 18:40:03,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:40:03,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:40:03,854 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:40:03,854 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 134 flow. Second operand 10 states and 604 transitions. [2020-10-11 18:40:03,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 225 flow [2020-10-11 18:40:03,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 191 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:40:03,858 INFO L241 Difference]: Finished difference. Result has 79 places, 54 transitions, 148 flow [2020-10-11 18:40:03,858 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=148, PETRI_PLACES=79, PETRI_TRANSITIONS=54} [2020-10-11 18:40:03,859 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2020-10-11 18:40:03,859 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 54 transitions, 148 flow [2020-10-11 18:40:03,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:40:03,860 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:40:03,860 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:40:03,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:40:03,860 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:40:03,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:40:03,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1502420062, now seen corresponding path program 1 times [2020-10-11 18:40:03,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:40:03,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753538905] [2020-10-11 18:40:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:40:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:40:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:40:04,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753538905] [2020-10-11 18:40:04,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:40:04,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:40:04,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868795297] [2020-10-11 18:40:04,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:40:04,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:40:04,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:40:04,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:40:04,132 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:40:04,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 54 transitions, 148 flow. Second operand 6 states. [2020-10-11 18:40:04,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:40:04,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:40:04,134 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:40:04,302 INFO L129 PetriNetUnfolder]: 91/279 cut-off events. [2020-10-11 18:40:04,302 INFO L130 PetriNetUnfolder]: For 47/48 co-relation queries the response was YES. [2020-10-11 18:40:04,305 INFO L80 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 279 events. 91/279 cut-off events. For 47/48 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1336 event pairs, 10 based on Foata normal form. 8/279 useless extension candidates. Maximal degree in co-relation 500. Up to 81 conditions per place. [2020-10-11 18:40:04,307 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 6 changer transitions 19/79 dead transitions. [2020-10-11 18:40:04,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 268 flow [2020-10-11 18:40:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:40:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:40:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 550 transitions. [2020-10-11 18:40:04,310 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2020-10-11 18:40:04,310 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 550 transitions. [2020-10-11 18:40:04,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 550 transitions. [2020-10-11 18:40:04,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:40:04,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 550 transitions. [2020-10-11 18:40:04,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:40:04,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:40:04,315 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:40:04,316 INFO L185 Difference]: Start difference. First operand has 79 places, 54 transitions, 148 flow. Second operand 9 states and 550 transitions. [2020-10-11 18:40:04,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 268 flow [2020-10-11 18:40:04,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 242 flow, removed 8 selfloop flow, removed 10 redundant places. [2020-10-11 18:40:04,321 INFO L241 Difference]: Finished difference. Result has 77 places, 57 transitions, 178 flow [2020-10-11 18:40:04,321 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=178, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2020-10-11 18:40:04,322 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:40:04,322 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 178 flow [2020-10-11 18:40:04,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:40:04,322 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:40:04,323 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:40:04,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:40:04,323 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:40:04,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:40:04,324 INFO L82 PathProgramCache]: Analyzing trace with hash 864121151, now seen corresponding path program 1 times [2020-10-11 18:40:04,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:40:04,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943566458] [2020-10-11 18:40:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:40:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:40:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:40:04,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943566458] [2020-10-11 18:40:04,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:40:04,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:40:04,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040214595] [2020-10-11 18:40:04,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:40:04,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:40:04,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:40:04,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:40:04,541 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:40:04,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 178 flow. Second operand 7 states. [2020-10-11 18:40:04,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:40:04,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:40:04,542 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:40:04,703 INFO L129 PetriNetUnfolder]: 52/195 cut-off events. [2020-10-11 18:40:04,703 INFO L130 PetriNetUnfolder]: For 267/303 co-relation queries the response was YES. [2020-10-11 18:40:04,705 INFO L80 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 195 events. 52/195 cut-off events. For 267/303 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 752 event pairs, 0 based on Foata normal form. 13/204 useless extension candidates. Maximal degree in co-relation 548. Up to 75 conditions per place. [2020-10-11 18:40:04,706 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 9 changer transitions 19/82 dead transitions. [2020-10-11 18:40:04,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 82 transitions, 431 flow [2020-10-11 18:40:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:40:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:40:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2020-10-11 18:40:04,709 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2020-10-11 18:40:04,709 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 610 transitions. [2020-10-11 18:40:04,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 610 transitions. [2020-10-11 18:40:04,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:40:04,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 610 transitions. [2020-10-11 18:40:04,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:40:04,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:40:04,714 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:40:04,714 INFO L185 Difference]: Start difference. First operand has 77 places, 57 transitions, 178 flow. Second operand 10 states and 610 transitions. [2020-10-11 18:40:04,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 82 transitions, 431 flow [2020-10-11 18:40:04,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 82 transitions, 407 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:40:04,719 INFO L241 Difference]: Finished difference. Result has 83 places, 60 transitions, 246 flow [2020-10-11 18:40:04,720 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=246, PETRI_PLACES=83, PETRI_TRANSITIONS=60} [2020-10-11 18:40:04,720 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 18 predicate places. [2020-10-11 18:40:04,720 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 60 transitions, 246 flow [2020-10-11 18:40:04,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:40:04,720 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:40:04,721 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:40:04,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:40:04,721 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:40:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:40:04,722 INFO L82 PathProgramCache]: Analyzing trace with hash -868321660, now seen corresponding path program 1 times [2020-10-11 18:40:04,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:40:04,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303799606] [2020-10-11 18:40:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:40:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:40:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:40:04,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303799606] [2020-10-11 18:40:04,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:40:04,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:40:04,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524713089] [2020-10-11 18:40:04,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:40:04,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:40:04,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:40:04,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:40:05,043 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:40:05,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 60 transitions, 246 flow. Second operand 8 states. [2020-10-11 18:40:05,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:40:05,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:40:05,045 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:40:05,224 INFO L129 PetriNetUnfolder]: 16/100 cut-off events. [2020-10-11 18:40:05,225 INFO L130 PetriNetUnfolder]: For 390/437 co-relation queries the response was YES. [2020-10-11 18:40:05,225 INFO L80 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 100 events. 16/100 cut-off events. For 390/437 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 220 event pairs, 0 based on Foata normal form. 14/113 useless extension candidates. Maximal degree in co-relation 317. Up to 30 conditions per place. [2020-10-11 18:40:05,226 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 4 selfloop transitions, 12 changer transitions 13/73 dead transitions. [2020-10-11 18:40:05,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 73 transitions, 430 flow [2020-10-11 18:40:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:40:05,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:40:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 658 transitions. [2020-10-11 18:40:05,229 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2020-10-11 18:40:05,230 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 658 transitions. [2020-10-11 18:40:05,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 658 transitions. [2020-10-11 18:40:05,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:40:05,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 658 transitions. [2020-10-11 18:40:05,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:40:05,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:40:05,234 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:40:05,234 INFO L185 Difference]: Start difference. First operand has 83 places, 60 transitions, 246 flow. Second operand 11 states and 658 transitions. [2020-10-11 18:40:05,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 73 transitions, 430 flow [2020-10-11 18:40:05,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 331 flow, removed 39 selfloop flow, removed 10 redundant places. [2020-10-11 18:40:05,240 INFO L241 Difference]: Finished difference. Result has 85 places, 60 transitions, 232 flow [2020-10-11 18:40:05,240 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=232, PETRI_PLACES=85, PETRI_TRANSITIONS=60} [2020-10-11 18:40:05,240 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2020-10-11 18:40:05,240 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 60 transitions, 232 flow [2020-10-11 18:40:05,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:40:05,241 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:40:05,241 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:40:05,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:40:05,241 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:40:05,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:40:05,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1917231370, now seen corresponding path program 1 times [2020-10-11 18:40:05,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:40:05,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327531249] [2020-10-11 18:40:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:40:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:40:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:40:05,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327531249] [2020-10-11 18:40:05,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:40:05,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:40:05,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323202522] [2020-10-11 18:40:05,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:40:05,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:40:05,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:40:05,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:40:05,508 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:40:05,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 60 transitions, 232 flow. Second operand 6 states. [2020-10-11 18:40:05,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:40:05,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:40:05,509 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:40:05,573 INFO L129 PetriNetUnfolder]: 10/111 cut-off events. [2020-10-11 18:40:05,574 INFO L130 PetriNetUnfolder]: For 143/153 co-relation queries the response was YES. [2020-10-11 18:40:05,574 INFO L80 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 111 events. 10/111 cut-off events. For 143/153 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 269 event pairs, 0 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 228. Up to 21 conditions per place. [2020-10-11 18:40:05,575 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 7 selfloop transitions, 2 changer transitions 5/65 dead transitions. [2020-10-11 18:40:05,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 65 transitions, 270 flow [2020-10-11 18:40:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 18:40:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 18:40:05,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 369 transitions. [2020-10-11 18:40:05,577 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8785714285714286 [2020-10-11 18:40:05,577 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 369 transitions. [2020-10-11 18:40:05,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 369 transitions. [2020-10-11 18:40:05,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:40:05,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 369 transitions. [2020-10-11 18:40:05,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 18:40:05,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 18:40:05,580 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 18:40:05,580 INFO L185 Difference]: Start difference. First operand has 85 places, 60 transitions, 232 flow. Second operand 6 states and 369 transitions. [2020-10-11 18:40:05,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 65 transitions, 270 flow [2020-10-11 18:40:05,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 188 flow, removed 22 selfloop flow, removed 15 redundant places. [2020-10-11 18:40:05,584 INFO L241 Difference]: Finished difference. Result has 75 places, 60 transitions, 164 flow [2020-10-11 18:40:05,584 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2020-10-11 18:40:05,585 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2020-10-11 18:40:05,585 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 164 flow [2020-10-11 18:40:05,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:40:05,585 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:40:05,585 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:40:05,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:40:05,586 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:40:05,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:40:05,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1829511080, now seen corresponding path program 2 times [2020-10-11 18:40:05,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:40:05,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052728053] [2020-10-11 18:40:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:40:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:40:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:40:05,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052728053] [2020-10-11 18:40:05,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:40:05,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:40:05,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379937617] [2020-10-11 18:40:05,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:40:05,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:40:05,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:40:05,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:40:05,903 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:40:05,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 164 flow. Second operand 7 states. [2020-10-11 18:40:05,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:40:05,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:40:05,904 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:40:05,978 INFO L129 PetriNetUnfolder]: 5/69 cut-off events. [2020-10-11 18:40:05,978 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-11 18:40:05,982 INFO L80 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 69 events. 5/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2020-10-11 18:40:05,983 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2020-10-11 18:40:05,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 58 transitions, 176 flow [2020-10-11 18:40:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:40:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:40:05,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 416 transitions. [2020-10-11 18:40:05,989 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8489795918367347 [2020-10-11 18:40:05,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 416 transitions. [2020-10-11 18:40:05,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 416 transitions. [2020-10-11 18:40:05,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:40:05,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 416 transitions. [2020-10-11 18:40:05,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:40:05,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:40:05,993 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:40:05,993 INFO L185 Difference]: Start difference. First operand has 75 places, 60 transitions, 164 flow. Second operand 7 states and 416 transitions. [2020-10-11 18:40:05,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 58 transitions, 176 flow [2020-10-11 18:40:05,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 58 transitions, 166 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-11 18:40:05,995 INFO L241 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2020-10-11 18:40:05,996 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2020-10-11 18:40:05,996 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2020-10-11 18:40:05,996 INFO L481 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2020-10-11 18:40:05,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:40:05,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:40:06,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:40:06 BasicIcfg [2020-10-11 18:40:06,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:40:06,006 INFO L168 Benchmark]: Toolchain (without parser) took 5111.10 ms. Allocated memory was 253.2 MB in the beginning and 423.1 MB in the end (delta: 169.9 MB). Free memory was 208.3 MB in the beginning and 293.3 MB in the end (delta: -85.0 MB). Peak memory consumption was 84.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:40:06,007 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:40:06,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.23 ms. Allocated memory was 253.2 MB in the beginning and 320.3 MB in the end (delta: 67.1 MB). Free memory was 208.3 MB in the beginning and 273.7 MB in the end (delta: -65.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:40:06,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.78 ms. Allocated memory is still 320.3 MB. Free memory was 273.7 MB in the beginning and 271.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:40:06,016 INFO L168 Benchmark]: Boogie Preprocessor took 28.82 ms. Allocated memory is still 320.3 MB. Free memory was 271.2 MB in the beginning and 268.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:40:06,016 INFO L168 Benchmark]: RCFGBuilder took 455.86 ms. Allocated memory is still 320.3 MB. Free memory was 268.7 MB in the beginning and 246.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:40:06,017 INFO L168 Benchmark]: TraceAbstraction took 3863.81 ms. Allocated memory was 320.3 MB in the beginning and 423.1 MB in the end (delta: 102.8 MB). Free memory was 246.8 MB in the beginning and 293.3 MB in the end (delta: -46.5 MB). Peak memory consumption was 56.3 MB. Max. memory is 14.2 GB. [2020-10-11 18:40:06,029 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 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 701.23 ms. Allocated memory was 253.2 MB in the beginning and 320.3 MB in the end (delta: 67.1 MB). Free memory was 208.3 MB in the beginning and 273.7 MB in the end (delta: -65.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 55.78 ms. Allocated memory is still 320.3 MB. Free memory was 273.7 MB in the beginning and 271.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.82 ms. Allocated memory is still 320.3 MB. Free memory was 271.2 MB in the beginning and 268.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 455.86 ms. Allocated memory is still 320.3 MB. Free memory was 268.7 MB in the beginning and 246.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3863.81 ms. Allocated memory was 320.3 MB in the beginning and 423.1 MB in the end (delta: 102.8 MB). Free memory was 246.8 MB in the beginning and 293.3 MB in the end (delta: -46.5 MB). Peak memory consumption was 56.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 3.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 169 SDtfs, 169 SDslu, 471 SDs, 0 SdLazy, 503 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=246occurred in iteration=4, 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, 0.8s InterpolantComputationTime, 297 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 34234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...