/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/safe034_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:46:52,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:46:52,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:46:52,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:46:52,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:46:52,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:46:52,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:46:52,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:46:52,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:46:52,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:46:52,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:46:52,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:46:52,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:46:52,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:46:52,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:46:52,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:46:52,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:46:52,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:46:52,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:46:52,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:46:52,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:46:52,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:46:52,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:46:52,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:46:52,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:46:52,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:46:52,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:46:52,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:46:52,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:46:52,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:46:52,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:46:52,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:46:52,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:46:52,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:46:52,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:46:52,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:46:52,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:46:52,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:46:52,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:46:52,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:46:52,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:46:52,690 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 18:46:52,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:46:52,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:46:52,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:46:52,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:46:52,714 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:46:52,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:46:52,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:46:52,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:46:52,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:46:52,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:46:52,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:46:52,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:46:52,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:46:52,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:46:52,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:46:52,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:46:52,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:46:52,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:46:52,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:46:52,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:46:52,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:46:52,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:46:52,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:46:52,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:46:52,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:46:52,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:46:52,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:46:52,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:46:52,719 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:46:52,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:46:53,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:46:53,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:46:53,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:46:53,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:46:53,048 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:46:53,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-10-11 18:46:53,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9092d80c2/4d505488b8984c6fafeb1c37f1456aff/FLAG3eebc7145 [2020-10-11 18:46:53,625 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:46:53,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-10-11 18:46:53,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9092d80c2/4d505488b8984c6fafeb1c37f1456aff/FLAG3eebc7145 [2020-10-11 18:46:53,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9092d80c2/4d505488b8984c6fafeb1c37f1456aff [2020-10-11 18:46:53,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:46:53,930 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:46:53,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:46:53,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:46:53,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:46:53,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:46:53" (1/1) ... [2020-10-11 18:46:53,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686335dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:53, skipping insertion in model container [2020-10-11 18:46:53,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:46:53" (1/1) ... [2020-10-11 18:46:53,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:46:53,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:46:54,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:46:54,465 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:46:54,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:46:54,619 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:46:54,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54 WrapperNode [2020-10-11 18:46:54,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:46:54,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:46:54,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:46:54,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:46:54,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54" (1/1) ... [2020-10-11 18:46:54,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54" (1/1) ... [2020-10-11 18:46:54,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:46:54,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:46:54,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:46:54,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:46:54,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54" (1/1) ... [2020-10-11 18:46:54,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54" (1/1) ... [2020-10-11 18:46:54,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54" (1/1) ... [2020-10-11 18:46:54,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54" (1/1) ... [2020-10-11 18:46:54,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54" (1/1) ... [2020-10-11 18:46:54,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54" (1/1) ... [2020-10-11 18:46:54,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54" (1/1) ... [2020-10-11 18:46:54,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:46:54,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:46:54,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:46:54,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:46:54,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54" (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 18:46:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:46:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:46:54,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:46:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:46:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:46:54,774 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:46:54,774 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:46:54,775 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:46:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:46:54,776 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:46:54,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:46:54,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:46:54,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:46:54,778 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 18:46:55,125 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:46:55,125 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:46:55,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:46:55 BoogieIcfgContainer [2020-10-11 18:46:55,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:46:55,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:46:55,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:46:55,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:46:55,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:46:53" (1/3) ... [2020-10-11 18:46:55,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227159f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:46:55, skipping insertion in model container [2020-10-11 18:46:55,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:54" (2/3) ... [2020-10-11 18:46:55,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227159f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:46:55, skipping insertion in model container [2020-10-11 18:46:55,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:46:55" (3/3) ... [2020-10-11 18:46:55,136 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2020-10-11 18:46:55,146 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:46:55,152 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:46:55,153 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:46:55,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,187 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,187 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,188 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,188 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,188 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,188 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,192 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,193 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,193 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,202 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,202 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,203 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,203 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,207 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,207 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,207 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,208 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:55,226 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:46:55,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:46:55,248 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:46:55,248 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:46:55,249 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:46:55,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:46:55,249 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:46:55,249 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:46:55,249 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:46:55,264 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:46:55,313 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 18:46:55,313 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:46:55,318 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 49 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 18:46:55,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:46:55,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-11 18:46:55,353 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-11 18:46:55,353 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:46:55,353 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:55,354 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 18:46:55,355 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:55,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1548204118, now seen corresponding path program 1 times [2020-10-11 18:46:55,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:55,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302967855] [2020-10-11 18:46:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:55,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302967855] [2020-10-11 18:46:55,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:55,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:55,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079907576] [2020-10-11 18:46:55,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:55,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:55,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:55,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:56,046 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:46:56,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 6 states. [2020-10-11 18:46:56,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:56,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:46:56,051 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:56,255 INFO L129 PetriNetUnfolder]: 24/144 cut-off events. [2020-10-11 18:46:56,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:46:56,257 INFO L80 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 144 events. 24/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 525 event pairs, 5 based on Foata normal form. 6/147 useless extension candidates. Maximal degree in co-relation 190. Up to 31 conditions per place. [2020-10-11 18:46:56,259 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 8 selfloop transitions, 3 changer transitions 19/76 dead transitions. [2020-10-11 18:46:56,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 221 flow [2020-10-11 18:46:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:46:56,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:46:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 565 transitions. [2020-10-11 18:46:56,279 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8968253968253969 [2020-10-11 18:46:56,280 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 565 transitions. [2020-10-11 18:46:56,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 565 transitions. [2020-10-11 18:46:56,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:56,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 565 transitions. [2020-10-11 18:46:56,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:46:56,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:46:56,302 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:46:56,305 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 565 transitions. [2020-10-11 18:46:56,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 221 flow [2020-10-11 18:46:56,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 76 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:46:56,316 INFO L241 Difference]: Finished difference. Result has 77 places, 57 transitions, 159 flow [2020-10-11 18:46:56,319 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2020-10-11 18:46:56,320 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:46:56,321 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 159 flow [2020-10-11 18:46:56,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:56,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:56,321 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 18:46:56,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:46:56,322 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:56,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:56,322 INFO L82 PathProgramCache]: Analyzing trace with hash 819426775, now seen corresponding path program 1 times [2020-10-11 18:46:56,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:56,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977821275] [2020-10-11 18:46:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:56,547 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 18:46:56,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977821275] [2020-10-11 18:46:56,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:56,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:56,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061648520] [2020-10-11 18:46:56,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:56,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:56,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:56,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:56,697 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:46:56,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 159 flow. Second operand 6 states. [2020-10-11 18:46:56,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:56,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:46:56,698 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:56,910 INFO L129 PetriNetUnfolder]: 166/436 cut-off events. [2020-10-11 18:46:56,910 INFO L130 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2020-10-11 18:46:56,915 INFO L80 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 436 events. 166/436 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2480 event pairs, 14 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 877. Up to 104 conditions per place. [2020-10-11 18:46:56,919 INFO L132 encePairwiseOnDemand]: 60/70 looper letters, 21 selfloop transitions, 15 changer transitions 5/87 dead transitions. [2020-10-11 18:46:56,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 87 transitions, 301 flow [2020-10-11 18:46:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:46:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:46:56,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 613 transitions. [2020-10-11 18:46:56,923 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8757142857142857 [2020-10-11 18:46:56,923 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 613 transitions. [2020-10-11 18:46:56,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 613 transitions. [2020-10-11 18:46:56,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:56,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 613 transitions. [2020-10-11 18:46:56,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:46:56,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:46:56,929 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:46:56,929 INFO L185 Difference]: Start difference. First operand has 77 places, 57 transitions, 159 flow. Second operand 10 states and 613 transitions. [2020-10-11 18:46:56,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 87 transitions, 301 flow [2020-10-11 18:46:56,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 292 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-11 18:46:56,939 INFO L241 Difference]: Finished difference. Result has 82 places, 70 transitions, 259 flow [2020-10-11 18:46:56,939 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=259, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2020-10-11 18:46:56,940 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2020-10-11 18:46:56,940 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 259 flow [2020-10-11 18:46:56,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:56,940 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:56,941 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] [2020-10-11 18:46:56,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:46:56,941 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:56,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:56,942 INFO L82 PathProgramCache]: Analyzing trace with hash -476874408, now seen corresponding path program 1 times [2020-10-11 18:46:56,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:56,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762739137] [2020-10-11 18:46:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:57,118 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 18:46:57,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762739137] [2020-10-11 18:46:57,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:57,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:46:57,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101322267] [2020-10-11 18:46:57,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:46:57,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:57,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:46:57,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:46:57,293 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:46:57,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 259 flow. Second operand 7 states. [2020-10-11 18:46:57,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:57,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:46:57,295 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:57,630 INFO L129 PetriNetUnfolder]: 146/405 cut-off events. [2020-10-11 18:46:57,630 INFO L130 PetriNetUnfolder]: For 882/955 co-relation queries the response was YES. [2020-10-11 18:46:57,635 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 405 events. 146/405 cut-off events. For 882/955 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2290 event pairs, 4 based on Foata normal form. 27/414 useless extension candidates. Maximal degree in co-relation 1316. Up to 152 conditions per place. [2020-10-11 18:46:57,640 INFO L132 encePairwiseOnDemand]: 60/70 looper letters, 20 selfloop transitions, 28 changer transitions 11/105 dead transitions. [2020-10-11 18:46:57,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 105 transitions, 601 flow [2020-10-11 18:46:57,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 18:46:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-11 18:46:57,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 796 transitions. [2020-10-11 18:46:57,646 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8747252747252747 [2020-10-11 18:46:57,646 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 796 transitions. [2020-10-11 18:46:57,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 796 transitions. [2020-10-11 18:46:57,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:57,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 796 transitions. [2020-10-11 18:46:57,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-11 18:46:57,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-11 18:46:57,655 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-11 18:46:57,655 INFO L185 Difference]: Start difference. First operand has 82 places, 70 transitions, 259 flow. Second operand 13 states and 796 transitions. [2020-10-11 18:46:57,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 105 transitions, 601 flow [2020-10-11 18:46:57,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 105 transitions, 599 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 18:46:57,668 INFO L241 Difference]: Finished difference. Result has 99 places, 87 transitions, 483 flow [2020-10-11 18:46:57,668 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=483, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2020-10-11 18:46:57,669 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 34 predicate places. [2020-10-11 18:46:57,669 INFO L481 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 483 flow [2020-10-11 18:46:57,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:46:57,669 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:57,670 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 18:46:57,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:46:57,671 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:57,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:57,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2045125526, now seen corresponding path program 1 times [2020-10-11 18:46:57,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:57,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221857852] [2020-10-11 18:46:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:57,846 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 18:46:57,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221857852] [2020-10-11 18:46:57,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:57,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:46:57,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689586684] [2020-10-11 18:46:57,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:46:57,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:57,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:46:57,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:46:57,982 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:46:57,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 483 flow. Second operand 7 states. [2020-10-11 18:46:57,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:57,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:46:57,983 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:58,188 INFO L129 PetriNetUnfolder]: 122/552 cut-off events. [2020-10-11 18:46:58,189 INFO L130 PetriNetUnfolder]: For 1358/1430 co-relation queries the response was YES. [2020-10-11 18:46:58,193 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1842 conditions, 552 events. 122/552 cut-off events. For 1358/1430 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3986 event pairs, 7 based on Foata normal form. 6/527 useless extension candidates. Maximal degree in co-relation 1797. Up to 139 conditions per place. [2020-10-11 18:46:58,197 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 18 selfloop transitions, 2 changer transitions 4/101 dead transitions. [2020-10-11 18:46:58,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 101 transitions, 579 flow [2020-10-11 18:46:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:46:58,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:46:58,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 431 transitions. [2020-10-11 18:46:58,199 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8795918367346939 [2020-10-11 18:46:58,200 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 431 transitions. [2020-10-11 18:46:58,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 431 transitions. [2020-10-11 18:46:58,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:58,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 431 transitions. [2020-10-11 18:46:58,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:46:58,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:46:58,205 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:46:58,206 INFO L185 Difference]: Start difference. First operand has 99 places, 87 transitions, 483 flow. Second operand 7 states and 431 transitions. [2020-10-11 18:46:58,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 101 transitions, 579 flow [2020-10-11 18:46:58,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 519 flow, removed 23 selfloop flow, removed 4 redundant places. [2020-10-11 18:46:58,232 INFO L241 Difference]: Finished difference. Result has 106 places, 88 transitions, 442 flow [2020-10-11 18:46:58,233 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2020-10-11 18:46:58,241 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 41 predicate places. [2020-10-11 18:46:58,243 INFO L481 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 442 flow [2020-10-11 18:46:58,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:46:58,244 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:58,245 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 18:46:58,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:46:58,245 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:58,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:58,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1665053334, now seen corresponding path program 2 times [2020-10-11 18:46:58,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:58,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817865887] [2020-10-11 18:46:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:58,398 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 18:46:58,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817865887] [2020-10-11 18:46:58,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:58,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:46:58,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18282494] [2020-10-11 18:46:58,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:46:58,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:58,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:46:58,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:46:58,634 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:46:58,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 442 flow. Second operand 8 states. [2020-10-11 18:46:58,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:58,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:46:58,635 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:59,035 INFO L129 PetriNetUnfolder]: 170/531 cut-off events. [2020-10-11 18:46:59,035 INFO L130 PetriNetUnfolder]: For 1491/1625 co-relation queries the response was YES. [2020-10-11 18:46:59,039 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 531 events. 170/531 cut-off events. For 1491/1625 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3784 event pairs, 0 based on Foata normal form. 35/525 useless extension candidates. Maximal degree in co-relation 1961. Up to 87 conditions per place. [2020-10-11 18:46:59,043 INFO L132 encePairwiseOnDemand]: 60/70 looper letters, 16 selfloop transitions, 32 changer transitions 19/114 dead transitions. [2020-10-11 18:46:59,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 750 flow [2020-10-11 18:46:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 18:46:59,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-11 18:46:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 964 transitions. [2020-10-11 18:46:59,048 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8607142857142858 [2020-10-11 18:46:59,048 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 964 transitions. [2020-10-11 18:46:59,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 964 transitions. [2020-10-11 18:46:59,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:59,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 964 transitions. [2020-10-11 18:46:59,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 17 states. [2020-10-11 18:46:59,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 17 states. [2020-10-11 18:46:59,055 INFO L81 ComplementDD]: Finished complementDD. Result 17 states. [2020-10-11 18:46:59,056 INFO L185 Difference]: Start difference. First operand has 106 places, 88 transitions, 442 flow. Second operand 16 states and 964 transitions. [2020-10-11 18:46:59,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 750 flow [2020-10-11 18:46:59,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 114 transitions, 723 flow, removed 13 selfloop flow, removed 7 redundant places. [2020-10-11 18:46:59,069 INFO L241 Difference]: Finished difference. Result has 118 places, 89 transitions, 521 flow [2020-10-11 18:46:59,070 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=521, PETRI_PLACES=118, PETRI_TRANSITIONS=89} [2020-10-11 18:46:59,070 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 53 predicate places. [2020-10-11 18:46:59,070 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 89 transitions, 521 flow [2020-10-11 18:46:59,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:46:59,071 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:59,071 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 18:46:59,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:46:59,071 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:59,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:59,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1390366070, now seen corresponding path program 1 times [2020-10-11 18:46:59,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:59,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118668524] [2020-10-11 18:46:59,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:59,201 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 18:46:59,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118668524] [2020-10-11 18:46:59,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:59,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:59,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577900269] [2020-10-11 18:46:59,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:59,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:59,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:59,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:59,340 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:46:59,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 89 transitions, 521 flow. Second operand 6 states. [2020-10-11 18:46:59,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:59,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:46:59,341 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:59,473 INFO L129 PetriNetUnfolder]: 134/661 cut-off events. [2020-10-11 18:46:59,473 INFO L130 PetriNetUnfolder]: For 2149/2264 co-relation queries the response was YES. [2020-10-11 18:46:59,477 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 661 events. 134/661 cut-off events. For 2149/2264 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5690 event pairs, 0 based on Foata normal form. 1/617 useless extension candidates. Maximal degree in co-relation 2233. Up to 107 conditions per place. [2020-10-11 18:46:59,479 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 7 selfloop transitions, 2 changer transitions 33/93 dead transitions. [2020-10-11 18:46:59,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 93 transitions, 561 flow [2020-10-11 18:46:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 18:46:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 18:46:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 369 transitions. [2020-10-11 18:46:59,481 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8785714285714286 [2020-10-11 18:46:59,481 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 369 transitions. [2020-10-11 18:46:59,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 369 transitions. [2020-10-11 18:46:59,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:59,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 369 transitions. [2020-10-11 18:46:59,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 18:46:59,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 18:46:59,484 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 18:46:59,484 INFO L185 Difference]: Start difference. First operand has 118 places, 89 transitions, 521 flow. Second operand 6 states and 369 transitions. [2020-10-11 18:46:59,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 93 transitions, 561 flow [2020-10-11 18:46:59,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 93 transitions, 464 flow, removed 15 selfloop flow, removed 15 redundant places. [2020-10-11 18:46:59,505 INFO L241 Difference]: Finished difference. Result has 109 places, 60 transitions, 230 flow [2020-10-11 18:46:59,506 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=109, PETRI_TRANSITIONS=60} [2020-10-11 18:46:59,506 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 44 predicate places. [2020-10-11 18:46:59,506 INFO L481 AbstractCegarLoop]: Abstraction has has 109 places, 60 transitions, 230 flow [2020-10-11 18:46:59,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:59,506 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:59,507 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 18:46:59,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:46:59,507 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:59,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:59,507 INFO L82 PathProgramCache]: Analyzing trace with hash -564221484, now seen corresponding path program 2 times [2020-10-11 18:46:59,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:59,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222772739] [2020-10-11 18:46:59,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:59,587 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 18:46:59,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222772739] [2020-10-11 18:46:59,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:59,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:46:59,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528692193] [2020-10-11 18:46:59,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:46:59,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:59,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:46:59,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:46:59,773 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:46:59,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 60 transitions, 230 flow. Second operand 7 states. [2020-10-11 18:46:59,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:59,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:46:59,774 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:59,860 INFO L129 PetriNetUnfolder]: 7/92 cut-off events. [2020-10-11 18:46:59,860 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2020-10-11 18:46:59,861 INFO L80 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 92 events. 7/92 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 202 event pairs, 0 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 186. Up to 12 conditions per place. [2020-10-11 18:46:59,861 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2020-10-11 18:46:59,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 59 transitions, 246 flow [2020-10-11 18:46:59,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:46:59,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:46:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 417 transitions. [2020-10-11 18:46:59,864 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8510204081632653 [2020-10-11 18:46:59,864 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 417 transitions. [2020-10-11 18:46:59,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 417 transitions. [2020-10-11 18:46:59,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:59,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 417 transitions. [2020-10-11 18:46:59,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:46:59,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:46:59,867 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:46:59,867 INFO L185 Difference]: Start difference. First operand has 109 places, 60 transitions, 230 flow. Second operand 7 states and 417 transitions. [2020-10-11 18:46:59,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 59 transitions, 246 flow [2020-10-11 18:46:59,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 59 transitions, 170 flow, removed 16 selfloop flow, removed 23 redundant places. [2020-10-11 18:46:59,869 INFO L241 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2020-10-11 18:46:59,869 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, 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=73, PETRI_TRANSITIONS=0} [2020-10-11 18:46:59,870 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2020-10-11 18:46:59,870 INFO L481 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2020-10-11 18:46:59,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:46:59,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:46:59,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:46:59 BasicIcfg [2020-10-11 18:46:59,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:46:59,879 INFO L168 Benchmark]: Toolchain (without parser) took 5948.93 ms. Allocated memory was 252.2 MB in the beginning and 423.1 MB in the end (delta: 170.9 MB). Free memory was 206.9 MB in the beginning and 191.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 186.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:59,880 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:46:59,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.21 ms. Allocated memory was 252.2 MB in the beginning and 318.2 MB in the end (delta: 66.1 MB). Free memory was 206.9 MB in the beginning and 271.0 MB in the end (delta: -64.1 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:59,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.01 ms. Allocated memory is still 318.2 MB. Free memory is still 271.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:46:59,882 INFO L168 Benchmark]: Boogie Preprocessor took 27.51 ms. Allocated memory is still 318.2 MB. Free memory was 271.0 MB in the beginning and 268.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:59,883 INFO L168 Benchmark]: RCFGBuilder took 428.62 ms. Allocated memory is still 318.2 MB. Free memory was 268.5 MB in the beginning and 246.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:59,884 INFO L168 Benchmark]: TraceAbstraction took 4747.93 ms. Allocated memory was 318.2 MB in the beginning and 423.1 MB in the end (delta: 104.9 MB). Free memory was 246.5 MB in the beginning and 191.3 MB in the end (delta: 55.3 MB). Peak memory consumption was 160.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:59,888 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 689.21 ms. Allocated memory was 252.2 MB in the beginning and 318.2 MB in the end (delta: 66.1 MB). Free memory was 206.9 MB in the beginning and 271.0 MB in the end (delta: -64.1 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.01 ms. Allocated memory is still 318.2 MB. Free memory is still 271.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.51 ms. Allocated memory is still 318.2 MB. Free memory was 271.0 MB in the beginning and 268.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 428.62 ms. Allocated memory is still 318.2 MB. Free memory was 268.5 MB in the beginning and 246.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4747.93 ms. Allocated memory was 318.2 MB in the beginning and 423.1 MB in the end (delta: 104.9 MB). Free memory was 246.5 MB in the beginning and 191.3 MB in the end (delta: 55.3 MB). Peak memory consumption was 160.1 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: 4.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 131 SDtfs, 206 SDslu, 440 SDs, 0 SdLazy, 483 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=521occurred in iteration=5, 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, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 33079 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...