/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-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 19:49:05,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 19:49:05,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 19:49:05,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 19:49:05,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 19:49:05,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 19:49:05,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 19:49:05,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 19:49:05,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 19:49:05,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 19:49:05,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 19:49:05,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 19:49:05,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 19:49:05,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 19:49:05,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 19:49:05,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 19:49:05,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 19:49:05,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 19:49:05,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 19:49:05,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 19:49:05,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 19:49:05,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 19:49:05,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 19:49:05,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 19:49:05,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 19:49:05,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 19:49:05,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 19:49:05,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 19:49:05,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 19:49:05,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 19:49:05,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 19:49:05,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 19:49:05,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 19:49:05,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 19:49:05,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 19:49:05,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 19:49:05,639 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 19:49:05,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 19:49:05,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 19:49:05,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 19:49:05,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 19:49:05,663 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 19:49:05,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 19:49:05,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 19:49:05,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 19:49:05,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 19:49:05,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 19:49:05,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 19:49:05,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 19:49:05,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 19:49:05,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 19:49:05,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 19:49:05,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 19:49:05,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 19:49:05,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 19:49:05,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 19:49:05,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 19:49:05,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 19:49:05,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 19:49:05,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 19:49:05,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 19:49:05,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 19:49:05,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 19:49:05,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 19:49:05,668 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 19:49:05,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 19:49:05,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 19:49:05,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 19:49:05,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 19:49:05,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 19:49:05,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 19:49:05,987 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 19:49:05,987 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-11 19:49:06,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb8a127e0/91e950da0e5b4daeb86a449205f7c2a6/FLAGc8a37fdb4 [2020-10-11 19:49:06,587 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 19:49:06,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-11 19:49:06,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb8a127e0/91e950da0e5b4daeb86a449205f7c2a6/FLAGc8a37fdb4 [2020-10-11 19:49:06,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb8a127e0/91e950da0e5b4daeb86a449205f7c2a6 [2020-10-11 19:49:06,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 19:49:06,891 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 19:49:06,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 19:49:06,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 19:49:06,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 19:49:06,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:49:06" (1/1) ... [2020-10-11 19:49:06,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de01462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:06, skipping insertion in model container [2020-10-11 19:49:06,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:49:06" (1/1) ... [2020-10-11 19:49:06,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 19:49:06,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 19:49:07,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:49:07,474 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 19:49:07,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:49:07,640 INFO L208 MainTranslator]: Completed translation [2020-10-11 19:49:07,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07 WrapperNode [2020-10-11 19:49:07,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 19:49:07,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 19:49:07,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 19:49:07,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 19:49:07,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07" (1/1) ... [2020-10-11 19:49:07,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07" (1/1) ... [2020-10-11 19:49:07,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 19:49:07,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 19:49:07,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 19:49:07,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 19:49:07,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07" (1/1) ... [2020-10-11 19:49:07,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07" (1/1) ... [2020-10-11 19:49:07,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07" (1/1) ... [2020-10-11 19:49:07,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07" (1/1) ... [2020-10-11 19:49:07,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07" (1/1) ... [2020-10-11 19:49:07,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07" (1/1) ... [2020-10-11 19:49:07,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07" (1/1) ... [2020-10-11 19:49:07,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 19:49:07,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 19:49:07,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 19:49:07,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 19:49:07,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07" (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 19:49:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-11 19:49:07,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-11 19:49:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-11 19:49:07,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-11 19:49:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 19:49:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 19:49:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 19:49:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 19:49:07,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 19:49:07,804 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 19:49:08,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 19:49:08,174 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-11 19:49:08,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:49:08 BoogieIcfgContainer [2020-10-11 19:49:08,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 19:49:08,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 19:49:08,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 19:49:08,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 19:49:08,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:49:06" (1/3) ... [2020-10-11 19:49:08,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398cf067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:49:08, skipping insertion in model container [2020-10-11 19:49:08,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:49:07" (2/3) ... [2020-10-11 19:49:08,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398cf067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:49:08, skipping insertion in model container [2020-10-11 19:49:08,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:49:08" (3/3) ... [2020-10-11 19:49:08,185 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-10-11 19:49:08,196 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 19:49:08,205 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 19:49:08,206 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 19:49:08,229 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,229 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,229 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,229 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,230 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,231 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,231 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,232 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,232 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,232 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,232 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,233 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,233 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,236 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,237 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,237 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,237 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,237 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,242 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,243 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,243 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:08,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 19:49:08,281 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 19:49:08,281 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 19:49:08,281 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 19:49:08,281 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 19:49:08,281 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 19:49:08,281 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 19:49:08,281 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 19:49:08,282 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 19:49:08,292 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-11 19:49:08,331 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-11 19:49:08,332 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:49:08,337 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-11 19:49:08,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 58 transitions, 126 flow [2020-10-11 19:49:08,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 57 transitions, 122 flow [2020-10-11 19:49:08,357 INFO L129 PetriNetUnfolder]: 3/40 cut-off events. [2020-10-11 19:49:08,357 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:49:08,358 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:49:08,359 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] [2020-10-11 19:49:08,359 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 19:49:08,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:49:08,368 INFO L82 PathProgramCache]: Analyzing trace with hash -2138170809, now seen corresponding path program 1 times [2020-10-11 19:49:08,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:49:08,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625574630] [2020-10-11 19:49:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:49:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:49:08,867 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 19:49:08,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625574630] [2020-10-11 19:49:08,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:49:08,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 19:49:08,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989660645] [2020-10-11 19:49:08,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 19:49:08,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:49:08,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 19:49:08,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 19:49:09,550 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 58 [2020-10-11 19:49:09,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 122 flow. Second operand 8 states. [2020-10-11 19:49:09,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:49:09,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 58 [2020-10-11 19:49:09,554 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:49:09,718 INFO L129 PetriNetUnfolder]: 3/80 cut-off events. [2020-10-11 19:49:09,719 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 19:49:09,720 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 80 events. 3/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 173 event pairs, 0 based on Foata normal form. 20/94 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2020-10-11 19:49:09,721 INFO L132 encePairwiseOnDemand]: 46/58 looper letters, 13 selfloop transitions, 11 changer transitions 1/63 dead transitions. [2020-10-11 19:49:09,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 63 transitions, 184 flow [2020-10-11 19:49:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 19:49:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 19:49:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 465 transitions. [2020-10-11 19:49:09,741 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7288401253918495 [2020-10-11 19:49:09,742 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 465 transitions. [2020-10-11 19:49:09,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 465 transitions. [2020-10-11 19:49:09,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:49:09,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 465 transitions. [2020-10-11 19:49:09,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 19:49:09,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 19:49:09,761 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 19:49:09,764 INFO L185 Difference]: Start difference. First operand has 60 places, 57 transitions, 122 flow. Second operand 11 states and 465 transitions. [2020-10-11 19:49:09,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 63 transitions, 184 flow [2020-10-11 19:49:09,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 19:49:09,774 INFO L241 Difference]: Finished difference. Result has 73 places, 59 transitions, 167 flow [2020-10-11 19:49:09,778 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=167, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2020-10-11 19:49:09,779 INFO L341 CegarLoopForPetriNet]: 60 programPoint places, 13 predicate places. [2020-10-11 19:49:09,779 INFO L481 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 167 flow [2020-10-11 19:49:09,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 19:49:09,779 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:49:09,780 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 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 19:49:09,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 19:49:09,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-11 19:49:09,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:49:09,782 INFO L82 PathProgramCache]: Analyzing trace with hash 797898845, now seen corresponding path program 1 times [2020-10-11 19:49:09,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:49:09,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524470499] [2020-10-11 19:49:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:49:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 19:49:09,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 19:49:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 19:49:09,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 19:49:09,949 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 19:49:09,950 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 19:49:09,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 19:49:09,955 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 19:49:09,956 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-11 19:49:09,969 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,977 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,977 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,978 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,978 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,979 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,979 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,984 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,986 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,988 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,988 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,997 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,997 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,997 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,998 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:09,998 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,000 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,000 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,001 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,001 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,004 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,004 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,004 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,005 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,005 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:10,008 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-11 19:49:10,009 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 19:49:10,009 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 19:49:10,009 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 19:49:10,009 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 19:49:10,009 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 19:49:10,009 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 19:49:10,009 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 19:49:10,010 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 19:49:10,014 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-11 19:49:10,044 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-11 19:49:10,046 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-11 19:49:10,048 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-10-11 19:49:10,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 74 transitions, 172 flow [2020-10-11 19:49:10,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 63 transitions, 141 flow [2020-10-11 19:49:10,060 INFO L129 PetriNetUnfolder]: 3/43 cut-off events. [2020-10-11 19:49:10,060 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:49:10,060 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:49:10,060 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] [2020-10-11 19:49:10,061 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:49:10,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:49:10,061 INFO L82 PathProgramCache]: Analyzing trace with hash -425611658, now seen corresponding path program 1 times [2020-10-11 19:49:10,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:49:10,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970633266] [2020-10-11 19:49:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:49:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:49:10,264 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 19:49:10,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970633266] [2020-10-11 19:49:10,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:49:10,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 19:49:10,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357266380] [2020-10-11 19:49:10,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 19:49:10,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:49:10,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 19:49:10,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 19:49:10,994 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 74 [2020-10-11 19:49:10,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 141 flow. Second operand 8 states. [2020-10-11 19:49:10,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:49:10,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 74 [2020-10-11 19:49:10,995 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:49:11,178 INFO L129 PetriNetUnfolder]: 24/153 cut-off events. [2020-10-11 19:49:11,179 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-11 19:49:11,181 INFO L80 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 153 events. 24/153 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 532 event pairs, 4 based on Foata normal form. 49/185 useless extension candidates. Maximal degree in co-relation 195. Up to 25 conditions per place. [2020-10-11 19:49:11,184 INFO L132 encePairwiseOnDemand]: 61/74 looper letters, 21 selfloop transitions, 14 changer transitions 1/79 dead transitions. [2020-10-11 19:49:11,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 79 transitions, 245 flow [2020-10-11 19:49:11,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 19:49:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 19:49:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 630 transitions. [2020-10-11 19:49:11,191 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.773955773955774 [2020-10-11 19:49:11,191 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 630 transitions. [2020-10-11 19:49:11,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 630 transitions. [2020-10-11 19:49:11,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:49:11,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 630 transitions. [2020-10-11 19:49:11,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 19:49:11,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 19:49:11,200 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 19:49:11,200 INFO L185 Difference]: Start difference. First operand has 68 places, 63 transitions, 141 flow. Second operand 11 states and 630 transitions. [2020-10-11 19:49:11,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 79 transitions, 245 flow [2020-10-11 19:49:11,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 242 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-11 19:49:11,207 INFO L241 Difference]: Finished difference. Result has 82 places, 69 transitions, 218 flow [2020-10-11 19:49:11,207 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=218, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2020-10-11 19:49:11,207 INFO L341 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2020-10-11 19:49:11,207 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 218 flow [2020-10-11 19:49:11,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 19:49:11,208 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:49:11,208 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] [2020-10-11 19:49:11,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 19:49:11,210 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:49:11,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:49:11,216 INFO L82 PathProgramCache]: Analyzing trace with hash -774431211, now seen corresponding path program 1 times [2020-10-11 19:49:11,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:49:11,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586575292] [2020-10-11 19:49:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:49:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:49:11,359 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 19:49:11,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586575292] [2020-10-11 19:49:11,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:49:11,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 19:49:11,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559894268] [2020-10-11 19:49:11,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 19:49:11,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:49:11,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 19:49:11,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-11 19:49:11,979 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 74 [2020-10-11 19:49:11,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 218 flow. Second operand 9 states. [2020-10-11 19:49:11,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:49:11,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 74 [2020-10-11 19:49:11,981 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:49:12,895 INFO L129 PetriNetUnfolder]: 697/2232 cut-off events. [2020-10-11 19:49:12,895 INFO L130 PetriNetUnfolder]: For 1156/1200 co-relation queries the response was YES. [2020-10-11 19:49:12,907 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4605 conditions, 2232 events. 697/2232 cut-off events. For 1156/1200 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 19345 event pairs, 27 based on Foata normal form. 39/2252 useless extension candidates. Maximal degree in co-relation 4560. Up to 233 conditions per place. [2020-10-11 19:49:12,924 INFO L132 encePairwiseOnDemand]: 61/74 looper letters, 112 selfloop transitions, 81 changer transitions 0/232 dead transitions. [2020-10-11 19:49:12,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 232 transitions, 1198 flow [2020-10-11 19:49:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-11 19:49:12,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-11 19:49:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1877 transitions. [2020-10-11 19:49:12,933 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7460254372019078 [2020-10-11 19:49:12,933 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1877 transitions. [2020-10-11 19:49:12,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1877 transitions. [2020-10-11 19:49:12,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:49:12,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1877 transitions. [2020-10-11 19:49:12,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 35 states. [2020-10-11 19:49:12,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 35 states. [2020-10-11 19:49:12,948 INFO L81 ComplementDD]: Finished complementDD. Result 35 states. [2020-10-11 19:49:12,948 INFO L185 Difference]: Start difference. First operand has 82 places, 69 transitions, 218 flow. Second operand 34 states and 1877 transitions. [2020-10-11 19:49:12,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 232 transitions, 1198 flow [2020-10-11 19:49:12,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 232 transitions, 1192 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 19:49:12,966 INFO L241 Difference]: Finished difference. Result has 131 places, 150 transitions, 920 flow [2020-10-11 19:49:12,967 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=920, PETRI_PLACES=131, PETRI_TRANSITIONS=150} [2020-10-11 19:49:12,967 INFO L341 CegarLoopForPetriNet]: 68 programPoint places, 63 predicate places. [2020-10-11 19:49:12,968 INFO L481 AbstractCegarLoop]: Abstraction has has 131 places, 150 transitions, 920 flow [2020-10-11 19:49:12,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 19:49:12,968 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:49:12,968 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 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 19:49:12,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 19:49:12,969 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:49:12,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:49:12,969 INFO L82 PathProgramCache]: Analyzing trace with hash 630082039, now seen corresponding path program 1 times [2020-10-11 19:49:12,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:49:12,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102104138] [2020-10-11 19:49:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:49:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 19:49:12,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 19:49:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-11 19:49:13,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-11 19:49:13,014 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-11 19:49:13,014 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-11 19:49:13,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 19:49:13,014 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-11 19:49:13,016 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-11 19:49:13,026 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,026 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,026 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,027 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,028 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,028 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,028 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,028 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,029 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,029 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,029 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,029 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,029 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,030 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,030 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,030 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,030 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,030 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,031 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,031 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,035 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,035 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,036 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,036 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,037 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,038 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,038 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,039 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,039 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,039 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,042 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,043 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,043 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,043 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,046 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,046 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,046 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,047 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,047 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,050 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:49:13,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 19:49:13,057 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 19:49:13,057 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 19:49:13,057 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 19:49:13,057 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 19:49:13,058 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 19:49:13,058 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 19:49:13,058 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 19:49:13,058 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 19:49:13,060 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-11 19:49:13,073 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-11 19:49:13,073 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-11 19:49:13,074 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-10-11 19:49:13,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 90 transitions, 222 flow [2020-10-11 19:49:13,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 69 transitions, 162 flow [2020-10-11 19:49:13,081 INFO L129 PetriNetUnfolder]: 3/43 cut-off events. [2020-10-11 19:49:13,081 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:49:13,081 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:49:13,081 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] [2020-10-11 19:49:13,082 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:49:13,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:49:13,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1799452155, now seen corresponding path program 1 times [2020-10-11 19:49:13,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:49:13,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749218599] [2020-10-11 19:49:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:49:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:49:13,251 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 19:49:13,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749218599] [2020-10-11 19:49:13,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:49:13,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 19:49:13,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373467407] [2020-10-11 19:49:13,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 19:49:13,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:49:13,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 19:49:13,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 19:49:14,091 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2020-10-11 19:49:14,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 162 flow. Second operand 8 states. [2020-10-11 19:49:14,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:49:14,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2020-10-11 19:49:14,092 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:49:14,277 INFO L129 PetriNetUnfolder]: 91/312 cut-off events. [2020-10-11 19:49:14,277 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2020-10-11 19:49:14,279 INFO L80 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 312 events. 91/312 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1487 event pairs, 25 based on Foata normal form. 100/369 useless extension candidates. Maximal degree in co-relation 466. Up to 77 conditions per place. [2020-10-11 19:49:14,282 INFO L132 encePairwiseOnDemand]: 76/90 looper letters, 25 selfloop transitions, 17 changer transitions 1/91 dead transitions. [2020-10-11 19:49:14,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 292 flow [2020-10-11 19:49:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 19:49:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 19:49:14,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 791 transitions. [2020-10-11 19:49:14,286 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.798989898989899 [2020-10-11 19:49:14,286 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 791 transitions. [2020-10-11 19:49:14,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 791 transitions. [2020-10-11 19:49:14,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:49:14,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 791 transitions. [2020-10-11 19:49:14,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 19:49:14,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 19:49:14,292 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 19:49:14,292 INFO L185 Difference]: Start difference. First operand has 76 places, 69 transitions, 162 flow. Second operand 11 states and 791 transitions. [2020-10-11 19:49:14,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 292 flow [2020-10-11 19:49:14,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 91 transitions, 285 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-11 19:49:14,297 INFO L241 Difference]: Finished difference. Result has 90 places, 78 transitions, 258 flow [2020-10-11 19:49:14,297 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=258, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2020-10-11 19:49:14,297 INFO L341 CegarLoopForPetriNet]: 76 programPoint places, 14 predicate places. [2020-10-11 19:49:14,297 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 258 flow [2020-10-11 19:49:14,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 19:49:14,298 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:49:14,298 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] [2020-10-11 19:49:14,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 19:49:14,298 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:49:14,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:49:14,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1749873944, now seen corresponding path program 1 times [2020-10-11 19:49:14,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:49:14,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334525706] [2020-10-11 19:49:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:49:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:49:14,435 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 19:49:14,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334525706] [2020-10-11 19:49:14,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:49:14,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 19:49:14,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396830494] [2020-10-11 19:49:14,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 19:49:14,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:49:14,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 19:49:14,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-11 19:49:15,161 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 90 [2020-10-11 19:49:15,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 258 flow. Second operand 9 states. [2020-10-11 19:49:15,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:49:15,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 90 [2020-10-11 19:49:15,163 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:49:16,327 INFO L129 PetriNetUnfolder]: 2549/6295 cut-off events. [2020-10-11 19:49:16,328 INFO L130 PetriNetUnfolder]: For 5099/5271 co-relation queries the response was YES. [2020-10-11 19:49:16,366 INFO L80 FinitePrefix]: Finished finitePrefix Result has 15256 conditions, 6295 events. 2549/6295 cut-off events. For 5099/5271 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 58228 event pairs, 217 based on Foata normal form. 112/6369 useless extension candidates. Maximal degree in co-relation 15210. Up to 1250 conditions per place. [2020-10-11 19:49:16,416 INFO L132 encePairwiseOnDemand]: 76/90 looper letters, 128 selfloop transitions, 97 changer transitions 0/269 dead transitions. [2020-10-11 19:49:16,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 269 transitions, 1505 flow [2020-10-11 19:49:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-11 19:49:16,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-11 19:49:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2381 transitions. [2020-10-11 19:49:16,426 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7781045751633987 [2020-10-11 19:49:16,426 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2381 transitions. [2020-10-11 19:49:16,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2381 transitions. [2020-10-11 19:49:16,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:49:16,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2381 transitions. [2020-10-11 19:49:16,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 35 states. [2020-10-11 19:49:16,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 35 states. [2020-10-11 19:49:16,441 INFO L81 ComplementDD]: Finished complementDD. Result 35 states. [2020-10-11 19:49:16,441 INFO L185 Difference]: Start difference. First operand has 90 places, 78 transitions, 258 flow. Second operand 34 states and 2381 transitions. [2020-10-11 19:49:16,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 269 transitions, 1505 flow [2020-10-11 19:49:16,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 269 transitions, 1499 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 19:49:16,465 INFO L241 Difference]: Finished difference. Result has 140 places, 173 transitions, 1122 flow [2020-10-11 19:49:16,466 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1122, PETRI_PLACES=140, PETRI_TRANSITIONS=173} [2020-10-11 19:49:16,466 INFO L341 CegarLoopForPetriNet]: 76 programPoint places, 64 predicate places. [2020-10-11 19:49:16,466 INFO L481 AbstractCegarLoop]: Abstraction has has 140 places, 173 transitions, 1122 flow [2020-10-11 19:49:16,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 19:49:16,466 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:49:16,467 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:16,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 19:49:16,467 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:49:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:49:16,467 INFO L82 PathProgramCache]: Analyzing trace with hash 703782471, now seen corresponding path program 1 times [2020-10-11 19:49:16,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:49:16,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47832874] [2020-10-11 19:49:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:49:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:49:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 19:49:16,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47832874] [2020-10-11 19:49:16,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344871395] [2020-10-11 19:49:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:49:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:49:16,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 19:49:16,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 19:49:16,829 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:49:16,834 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:49:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:49:16,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 19:49:16,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2020-10-11 19:49:16,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093148384] [2020-10-11 19:49:16,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:49:16,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:49:16,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:49:16,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:49:18,900 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2020-10-11 19:49:18,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 173 transitions, 1122 flow. Second operand 18 states. [2020-10-11 19:49:18,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:49:18,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2020-10-11 19:49:18,903 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:49:24,590 INFO L129 PetriNetUnfolder]: 10277/21640 cut-off events. [2020-10-11 19:49:24,590 INFO L130 PetriNetUnfolder]: For 116497/118675 co-relation queries the response was YES. [2020-10-11 19:49:24,763 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84558 conditions, 21640 events. 10277/21640 cut-off events. For 116497/118675 co-relation queries the response was YES. Maximal size of possible extension queue 1627. Compared 224647 event pairs, 2353 based on Foata normal form. 253/21503 useless extension candidates. Maximal degree in co-relation 84490. Up to 4403 conditions per place. [2020-10-11 19:49:24,893 INFO L132 encePairwiseOnDemand]: 74/90 looper letters, 250 selfloop transitions, 279 changer transitions 6/587 dead transitions. [2020-10-11 19:49:24,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 587 transitions, 5412 flow [2020-10-11 19:49:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-11 19:49:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-11 19:49:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 3393 transitions. [2020-10-11 19:49:24,900 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.754 [2020-10-11 19:49:24,901 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 3393 transitions. [2020-10-11 19:49:24,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 3393 transitions. [2020-10-11 19:49:24,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:49:24,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 3393 transitions. [2020-10-11 19:49:24,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 51 states. [2020-10-11 19:49:24,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 51 states. [2020-10-11 19:49:24,914 INFO L81 ComplementDD]: Finished complementDD. Result 51 states. [2020-10-11 19:49:24,914 INFO L185 Difference]: Start difference. First operand has 140 places, 173 transitions, 1122 flow. Second operand 50 states and 3393 transitions. [2020-10-11 19:49:24,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 587 transitions, 5412 flow [2020-10-11 19:49:26,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 587 transitions, 5158 flow, removed 126 selfloop flow, removed 1 redundant places. [2020-10-11 19:49:26,072 INFO L241 Difference]: Finished difference. Result has 224 places, 384 transitions, 3793 flow [2020-10-11 19:49:26,072 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=3793, PETRI_PLACES=224, PETRI_TRANSITIONS=384} [2020-10-11 19:49:26,073 INFO L341 CegarLoopForPetriNet]: 76 programPoint places, 148 predicate places. [2020-10-11 19:49:26,073 INFO L481 AbstractCegarLoop]: Abstraction has has 224 places, 384 transitions, 3793 flow [2020-10-11 19:49:26,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:49:26,073 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:49:26,073 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:26,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-11 19:49:26,275 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:49:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:49:26,275 INFO L82 PathProgramCache]: Analyzing trace with hash -331380987, now seen corresponding path program 1 times [2020-10-11 19:49:26,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:49:26,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420919225] [2020-10-11 19:49:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:49:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:49:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:49:26,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420919225] [2020-10-11 19:49:26,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396938061] [2020-10-11 19:49:26,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:49:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:49:26,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 19:49:26,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 19:49:26,670 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:49:26,677 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:49:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:49:26,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 19:49:26,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-10-11 19:49:26,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920503113] [2020-10-11 19:49:26,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:49:26,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:49:26,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:49:26,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:49:30,941 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 90 [2020-10-11 19:49:30,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 384 transitions, 3793 flow. Second operand 24 states. [2020-10-11 19:49:30,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:49:30,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 90 [2020-10-11 19:49:30,943 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:49:32,591 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2020-10-11 19:49:43,677 INFO L129 PetriNetUnfolder]: 21580/43048 cut-off events. [2020-10-11 19:49:43,677 INFO L130 PetriNetUnfolder]: For 640391/653762 co-relation queries the response was YES. [2020-10-11 19:49:44,227 INFO L80 FinitePrefix]: Finished finitePrefix Result has 238981 conditions, 43048 events. 21580/43048 cut-off events. For 640391/653762 co-relation queries the response was YES. Maximal size of possible extension queue 2964. Compared 463534 event pairs, 3207 based on Foata normal form. 2607/45446 useless extension candidates. Maximal degree in co-relation 238874. Up to 6700 conditions per place. [2020-10-11 19:49:44,459 INFO L132 encePairwiseOnDemand]: 73/90 looper letters, 516 selfloop transitions, 502 changer transitions 42/1098 dead transitions. [2020-10-11 19:49:44,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 1098 transitions, 13603 flow [2020-10-11 19:49:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-11 19:49:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-11 19:49:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 5751 transitions. [2020-10-11 19:49:44,469 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7430232558139535 [2020-10-11 19:49:44,469 INFO L72 ComplementDD]: Start complementDD. Operand 86 states and 5751 transitions. [2020-10-11 19:49:44,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 5751 transitions. [2020-10-11 19:49:44,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:49:44,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 86 states and 5751 transitions. [2020-10-11 19:49:44,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 87 states. [2020-10-11 19:49:44,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 87 states. [2020-10-11 19:49:44,488 INFO L81 ComplementDD]: Finished complementDD. Result 87 states. [2020-10-11 19:49:44,488 INFO L185 Difference]: Start difference. First operand has 224 places, 384 transitions, 3793 flow. Second operand 86 states and 5751 transitions. [2020-10-11 19:49:44,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 1098 transitions, 13603 flow [2020-10-11 19:49:59,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 1098 transitions, 13316 flow, removed 136 selfloop flow, removed 5 redundant places. [2020-10-11 19:49:59,358 INFO L241 Difference]: Finished difference. Result has 327 places, 618 transitions, 7636 flow [2020-10-11 19:49:59,359 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=3632, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=7636, PETRI_PLACES=327, PETRI_TRANSITIONS=618} [2020-10-11 19:49:59,359 INFO L341 CegarLoopForPetriNet]: 76 programPoint places, 251 predicate places. [2020-10-11 19:49:59,360 INFO L481 AbstractCegarLoop]: Abstraction has has 327 places, 618 transitions, 7636 flow [2020-10-11 19:49:59,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-11 19:49:59,360 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:49:59,360 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:59,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:49:59,561 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:49:59,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:49:59,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1312199643, now seen corresponding path program 2 times [2020-10-11 19:49:59,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:49:59,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171024234] [2020-10-11 19:49:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:49:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:49:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:49:59,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171024234] [2020-10-11 19:49:59,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821675168] [2020-10-11 19:49:59,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:49:59,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 19:49:59,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 19:49:59,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 19:49:59,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 19:49:59,926 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:49:59,928 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:49:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:49:59,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 19:49:59,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-10-11 19:49:59,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953016806] [2020-10-11 19:49:59,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:49:59,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:49:59,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:49:59,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:50:04,095 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 90 [2020-10-11 19:50:04,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 618 transitions, 7636 flow. Second operand 24 states. [2020-10-11 19:50:04,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:50:04,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 90 [2020-10-11 19:50:04,097 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:50:36,550 INFO L129 PetriNetUnfolder]: 38542/78093 cut-off events. [2020-10-11 19:50:36,550 INFO L130 PetriNetUnfolder]: For 1468082/1492286 co-relation queries the response was YES. [2020-10-11 19:50:38,121 INFO L80 FinitePrefix]: Finished finitePrefix Result has 483456 conditions, 78093 events. 38542/78093 cut-off events. For 1468082/1492286 co-relation queries the response was YES. Maximal size of possible extension queue 5605. Compared 923464 event pairs, 3491 based on Foata normal form. 4936/82449 useless extension candidates. Maximal degree in co-relation 483325. Up to 10496 conditions per place. [2020-10-11 19:50:38,637 INFO L132 encePairwiseOnDemand]: 72/90 looper letters, 730 selfloop transitions, 1024 changer transitions 74/1866 dead transitions. [2020-10-11 19:50:38,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1866 transitions, 27728 flow [2020-10-11 19:50:38,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-10-11 19:50:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-11 19:50:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 8408 transitions. [2020-10-11 19:50:38,651 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7414462081128748 [2020-10-11 19:50:38,651 INFO L72 ComplementDD]: Start complementDD. Operand 126 states and 8408 transitions. [2020-10-11 19:50:38,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 8408 transitions. [2020-10-11 19:50:38,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:50:38,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 126 states and 8408 transitions. [2020-10-11 19:50:38,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 127 states. [2020-10-11 19:50:38,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 127 states. [2020-10-11 19:50:38,677 INFO L81 ComplementDD]: Finished complementDD. Result 127 states. [2020-10-11 19:50:38,677 INFO L185 Difference]: Start difference. First operand has 327 places, 618 transitions, 7636 flow. Second operand 126 states and 8408 transitions. [2020-10-11 19:50:38,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1866 transitions, 27728 flow [2020-10-11 19:51:42,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 1866 transitions, 26439 flow, removed 332 selfloop flow, removed 37 redundant places. [2020-10-11 19:51:42,485 INFO L241 Difference]: Finished difference. Result has 470 places, 1163 transitions, 17976 flow [2020-10-11 19:51:42,485 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=6851, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=17976, PETRI_PLACES=470, PETRI_TRANSITIONS=1163} [2020-10-11 19:51:42,486 INFO L341 CegarLoopForPetriNet]: 76 programPoint places, 394 predicate places. [2020-10-11 19:51:42,486 INFO L481 AbstractCegarLoop]: Abstraction has has 470 places, 1163 transitions, 17976 flow [2020-10-11 19:51:42,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-11 19:51:42,486 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:51:42,486 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:51:42,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-11 19:51:42,687 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:51:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:51:42,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1105759237, now seen corresponding path program 3 times [2020-10-11 19:51:42,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:51:42,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942479986] [2020-10-11 19:51:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:51:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:51:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:51:42,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942479986] [2020-10-11 19:51:42,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593727841] [2020-10-11 19:51:42,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:51:42,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-11 19:51:42,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 19:51:42,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-11 19:51:42,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 19:51:42,962 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-10-11 19:51:42,962 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:51:43,076 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:51:43,078 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-11 19:51:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-11 19:51:43,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 19:51:43,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2020-10-11 19:51:43,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294160246] [2020-10-11 19:51:43,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 19:51:43,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:51:43,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 19:51:43,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2020-10-11 19:51:44,741 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 90 [2020-10-11 19:51:44,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 1163 transitions, 17976 flow. Second operand 12 states. [2020-10-11 19:51:44,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:51:44,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 90 [2020-10-11 19:51:44,743 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:51:57,278 INFO L129 PetriNetUnfolder]: 9415/34465 cut-off events. [2020-10-11 19:51:57,279 INFO L130 PetriNetUnfolder]: For 1569900/1595943 co-relation queries the response was YES. [2020-10-11 19:52:05,195 INFO L80 FinitePrefix]: Finished finitePrefix Result has 247951 conditions, 34465 events. 9415/34465 cut-off events. For 1569900/1595943 co-relation queries the response was YES. Maximal size of possible extension queue 2897. Compared 518730 event pairs, 1441 based on Foata normal form. 4097/37464 useless extension candidates. Maximal degree in co-relation 247762. Up to 4107 conditions per place. [2020-10-11 19:52:05,371 INFO L132 encePairwiseOnDemand]: 78/90 looper letters, 249 selfloop transitions, 1043 changer transitions 0/1591 dead transitions. [2020-10-11 19:52:05,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 1591 transitions, 27601 flow [2020-10-11 19:52:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-11 19:52:05,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-11 19:52:05,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2738 transitions. [2020-10-11 19:52:05,376 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7605555555555555 [2020-10-11 19:52:05,376 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2738 transitions. [2020-10-11 19:52:05,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2738 transitions. [2020-10-11 19:52:05,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:52:05,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2738 transitions. [2020-10-11 19:52:05,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 41 states. [2020-10-11 19:52:05,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 41 states. [2020-10-11 19:52:05,385 INFO L81 ComplementDD]: Finished complementDD. Result 41 states. [2020-10-11 19:52:05,385 INFO L185 Difference]: Start difference. First operand has 470 places, 1163 transitions, 17976 flow. Second operand 40 states and 2738 transitions. [2020-10-11 19:52:05,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 1591 transitions, 27601 flow [2020-10-11 19:52:19,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 1591 transitions, 25238 flow, removed 1101 selfloop flow, removed 21 redundant places. [2020-10-11 19:52:19,866 INFO L241 Difference]: Finished difference. Result has 497 places, 1438 transitions, 23371 flow [2020-10-11 19:52:19,868 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=16203, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=768, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=23371, PETRI_PLACES=497, PETRI_TRANSITIONS=1438} [2020-10-11 19:52:19,868 INFO L341 CegarLoopForPetriNet]: 76 programPoint places, 421 predicate places. [2020-10-11 19:52:19,868 INFO L481 AbstractCegarLoop]: Abstraction has has 497 places, 1438 transitions, 23371 flow [2020-10-11 19:52:19,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 19:52:19,868 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:52:19,869 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:20,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:52:20,085 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:52:20,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:52:20,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2043055551, now seen corresponding path program 4 times [2020-10-11 19:52:20,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:52:20,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920286133] [2020-10-11 19:52:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:52:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:52:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:52:20,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920286133] [2020-10-11 19:52:20,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582101620] [2020-10-11 19:52:20,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:52:20,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 19:52:20,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 19:52:20,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 19:52:20,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 19:52:20,455 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:52:20,458 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:52:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:52:20,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 19:52:20,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-10-11 19:52:20,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962027177] [2020-10-11 19:52:20,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:52:20,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:52:20,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:52:20,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:52:23,643 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 90 [2020-10-11 19:52:23,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1438 transitions, 23371 flow. Second operand 24 states. [2020-10-11 19:52:23,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:52:23,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 90 [2020-10-11 19:52:23,645 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:53:14,112 INFO L129 PetriNetUnfolder]: 40420/92462 cut-off events. [2020-10-11 19:53:14,112 INFO L130 PetriNetUnfolder]: For 4373357/4423814 co-relation queries the response was YES. [2020-10-11 19:53:17,180 INFO L80 FinitePrefix]: Finished finitePrefix Result has 764289 conditions, 92462 events. 40420/92462 cut-off events. For 4373357/4423814 co-relation queries the response was YES. Maximal size of possible extension queue 6592. Compared 1223176 event pairs, 4908 based on Foata normal form. 8261/100187 useless extension candidates. Maximal degree in co-relation 764091. Up to 10166 conditions per place. [2020-10-11 19:53:17,691 INFO L132 encePairwiseOnDemand]: 72/90 looper letters, 861 selfloop transitions, 1517 changer transitions 609/3025 dead transitions. [2020-10-11 19:53:17,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 3025 transitions, 59404 flow [2020-10-11 19:53:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-10-11 19:53:17,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-11 19:53:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 8310 transitions. [2020-10-11 19:53:17,703 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7328042328042328 [2020-10-11 19:53:17,703 INFO L72 ComplementDD]: Start complementDD. Operand 126 states and 8310 transitions. [2020-10-11 19:53:17,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 8310 transitions. [2020-10-11 19:53:17,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:53:17,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 126 states and 8310 transitions. [2020-10-11 19:53:17,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 127 states. [2020-10-11 19:53:17,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 127 states. [2020-10-11 19:53:17,728 INFO L81 ComplementDD]: Finished complementDD. Result 127 states. [2020-10-11 19:53:17,728 INFO L185 Difference]: Start difference. First operand has 497 places, 1438 transitions, 23371 flow. Second operand 126 states and 8310 transitions. [2020-10-11 19:53:17,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 3025 transitions, 59404 flow [2020-10-11 19:56:51,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 3025 transitions, 57126 flow, removed 930 selfloop flow, removed 7 redundant places. [2020-10-11 19:56:51,909 INFO L241 Difference]: Finished difference. Result has 660 places, 1872 transitions, 34857 flow [2020-10-11 19:56:51,911 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=22075, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=34857, PETRI_PLACES=660, PETRI_TRANSITIONS=1872} [2020-10-11 19:56:51,911 INFO L341 CegarLoopForPetriNet]: 76 programPoint places, 584 predicate places. [2020-10-11 19:56:51,911 INFO L481 AbstractCegarLoop]: Abstraction has has 660 places, 1872 transitions, 34857 flow [2020-10-11 19:56:51,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-11 19:56:51,912 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:56:51,912 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:52,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-11 19:56:52,126 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:56:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:56:52,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1827797033, now seen corresponding path program 5 times [2020-10-11 19:56:52,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:56:52,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080357946] [2020-10-11 19:56:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:56:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:56:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:56:52,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080357946] [2020-10-11 19:56:52,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126788833] [2020-10-11 19:56:52,298 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 19:56:52,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 19:56:52,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 19:56:52,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 19:56:52,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 19:56:52,573 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:56:52,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 19:56:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:56:52,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 19:56:52,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-10-11 19:56:52,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379018366] [2020-10-11 19:56:52,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:56:52,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:56:52,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:56:52,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:56:56,467 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 90 [2020-10-11 19:56:56,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 1872 transitions, 34857 flow. Second operand 24 states. [2020-10-11 19:56:56,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:56:56,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 90 [2020-10-11 19:56:56,469 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:58:50,189 INFO L129 PetriNetUnfolder]: 48984/109382 cut-off events. [2020-10-11 19:58:50,189 INFO L130 PetriNetUnfolder]: For 6849782/6883383 co-relation queries the response was YES. [2020-10-11 19:58:57,353 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1038570 conditions, 109382 events. 48984/109382 cut-off events. For 6849782/6883383 co-relation queries the response was YES. Maximal size of possible extension queue 7776. Compared 1448895 event pairs, 8410 based on Foata normal form. 4252/112725 useless extension candidates. Maximal degree in co-relation 1038328. Up to 20033 conditions per place. [2020-10-11 19:58:58,239 INFO L132 encePairwiseOnDemand]: 72/90 looper letters, 1646 selfloop transitions, 1568 changer transitions 545/3797 dead transitions. [2020-10-11 19:58:58,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 809 places, 3797 transitions, 83558 flow [2020-10-11 19:58:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-10-11 19:58:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-11 19:58:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 10559 transitions. [2020-10-11 19:58:58,253 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7242112482853224 [2020-10-11 19:58:58,254 INFO L72 ComplementDD]: Start complementDD. Operand 162 states and 10559 transitions. [2020-10-11 19:58:58,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 162 states and 10559 transitions. [2020-10-11 19:58:58,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:58:58,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 162 states and 10559 transitions. [2020-10-11 19:58:58,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 163 states. [2020-10-11 19:58:58,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 163 states. [2020-10-11 19:58:58,291 INFO L81 ComplementDD]: Finished complementDD. Result 163 states. [2020-10-11 19:58:58,291 INFO L185 Difference]: Start difference. First operand has 660 places, 1872 transitions, 34857 flow. Second operand 162 states and 10559 transitions. [2020-10-11 19:58:58,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 809 places, 3797 transitions, 83558 flow Received shutdown request... [2020-10-11 20:01:22,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 20:01:22,055 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-11 20:01:22,062 WARN L235 ceAbstractionStarter]: Timeout [2020-10-11 20:01:22,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 08:01:22 BasicIcfg [2020-10-11 20:01:22,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 20:01:22,064 INFO L168 Benchmark]: Toolchain (without parser) took 735173.59 ms. Allocated memory was 249.0 MB in the beginning and 8.2 GB in the end (delta: 7.9 GB). Free memory was 204.2 MB in the beginning and 4.4 GB in the end (delta: -4.2 GB). Peak memory consumption was 6.5 GB. Max. memory is 14.2 GB. [2020-10-11 20:01:22,065 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 20:01:22,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.02 ms. Allocated memory was 249.0 MB in the beginning and 307.8 MB in the end (delta: 58.7 MB). Free memory was 204.2 MB in the beginning and 261.0 MB in the end (delta: -56.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. [2020-10-11 20:01:22,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.73 ms. Allocated memory is still 307.8 MB. Free memory was 261.0 MB in the beginning and 258.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 20:01:22,068 INFO L168 Benchmark]: Boogie Preprocessor took 29.12 ms. Allocated memory is still 307.8 MB. Free memory was 258.5 MB in the beginning and 256.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 20:01:22,068 INFO L168 Benchmark]: RCFGBuilder took 435.80 ms. Allocated memory is still 307.8 MB. Free memory was 256.0 MB in the beginning and 236.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-11 20:01:22,070 INFO L168 Benchmark]: TraceAbstraction took 733884.77 ms. Allocated memory was 307.8 MB in the beginning and 8.2 GB in the end (delta: 7.9 GB). Free memory was 236.6 MB in the beginning and 4.4 GB in the end (delta: -4.1 GB). Peak memory consumption was 6.5 GB. Max. memory is 14.2 GB. [2020-10-11 20:01:22,074 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 249.0 MB. Free memory is still 225.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 750.02 ms. Allocated memory was 249.0 MB in the beginning and 307.8 MB in the end (delta: 58.7 MB). Free memory was 204.2 MB in the beginning and 261.0 MB in the end (delta: -56.8 MB). Peak memory consumption was 26.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 67.73 ms. Allocated memory is still 307.8 MB. Free memory was 261.0 MB in the beginning and 258.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.12 ms. Allocated memory is still 307.8 MB. Free memory was 258.5 MB in the beginning and 256.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 435.80 ms. Allocated memory is still 307.8 MB. Free memory was 256.0 MB in the beginning and 236.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 733884.77 ms. Allocated memory was 307.8 MB in the beginning and 8.2 GB in the end (delta: 7.9 GB). Free memory was 236.6 MB in the beginning and 4.4 GB in the end (delta: -4.1 GB). Peak memory consumption was 6.5 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 3 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 733.6s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 728.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1196 SDtfs, 3948 SDslu, 10951 SDs, 0 SdLazy, 17060 SolverSat, 460 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1011 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32129 ImplicationChecksByTransitivity, 16.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34857occurred in iteration=7, 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, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 801 NumberOfCodeBlocks, 790 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 709 ConstructedInterpolants, 0 QuantifiedInterpolants, 128626 SizeOfPredicates, 63 NumberOfNonLiveVariables, 664 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 7/36 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 could not prove your program: Timeout Completed graceful shutdown