/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 23:34:09,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 23:34:09,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 23:34:09,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 23:34:09,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 23:34:09,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 23:34:09,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 23:34:09,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 23:34:09,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 23:34:09,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 23:34:09,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 23:34:09,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 23:34:09,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 23:34:09,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 23:34:09,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 23:34:09,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 23:34:09,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 23:34:09,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 23:34:09,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 23:34:09,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 23:34:09,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 23:34:09,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 23:34:09,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 23:34:09,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 23:34:09,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-12 23:34:09,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 23:34:09,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 23:34:09,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 23:34:09,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf [2021-08-12 23:34:09,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 23:34:09,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 23:34:09,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 23:34:09,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 23:34:09,684 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 23:34:09,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 23:34:09,685 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 23:34:09,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 23:34:09,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 23:34:09,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 23:34:09,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 23:34:09,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 23:34:09,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 23:34:09,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 23:34:09,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 23:34:09,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 23:34:09,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 23:34:09,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 23:34:09,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 23:34:09,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 23:34:09,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 23:34:09,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 23:34:09,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 23:34:09,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 23:34:09,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 23:34:09,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 23:34:09,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 23:34:09,688 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 23:34:09,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 23:34:09,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 23:34:09,689 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-12 23:34:09,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 23:34:10,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 23:34:10,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 23:34:10,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 23:34:10,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-12 23:34:10,034 INFO L275 PluginConnector]: CDTParser initialized [2021-08-12 23:34:10,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-08-12 23:34:10,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6f544cfd/cc157c8fdcf94b1cb0fe57e355c2f42d/FLAG31359b1a5 [2021-08-12 23:34:10,648 INFO L306 CDTParser]: Found 1 translation units. [2021-08-12 23:34:10,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-08-12 23:34:10,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6f544cfd/cc157c8fdcf94b1cb0fe57e355c2f42d/FLAG31359b1a5 [2021-08-12 23:34:11,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6f544cfd/cc157c8fdcf94b1cb0fe57e355c2f42d [2021-08-12 23:34:11,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 23:34:11,092 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-12 23:34:11,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-12 23:34:11,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-12 23:34:11,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-12 23:34:11,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 11:34:11" (1/1) ... [2021-08-12 23:34:11,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c33d6e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11, skipping insertion in model container [2021-08-12 23:34:11,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 11:34:11" (1/1) ... [2021-08-12 23:34:11,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-12 23:34:11,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-12 23:34:11,319 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-12 23:34:11,455 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-08-12 23:34:11,463 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-08-12 23:34:11,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 23:34:11,479 INFO L203 MainTranslator]: Completed pre-run [2021-08-12 23:34:11,501 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-12 23:34:11,517 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-08-12 23:34:11,519 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-08-12 23:34:11,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 23:34:11,596 INFO L208 MainTranslator]: Completed translation [2021-08-12 23:34:11,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11 WrapperNode [2021-08-12 23:34:11,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-12 23:34:11,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 23:34:11,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 23:34:11,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 23:34:11,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11" (1/1) ... [2021-08-12 23:34:11,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11" (1/1) ... [2021-08-12 23:34:11,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 23:34:11,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 23:34:11,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 23:34:11,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 23:34:11,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11" (1/1) ... [2021-08-12 23:34:11,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11" (1/1) ... [2021-08-12 23:34:11,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11" (1/1) ... [2021-08-12 23:34:11,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11" (1/1) ... [2021-08-12 23:34:11,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11" (1/1) ... [2021-08-12 23:34:11,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11" (1/1) ... [2021-08-12 23:34:11,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11" (1/1) ... [2021-08-12 23:34:11,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 23:34:11,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 23:34:11,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 23:34:11,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 23:34:11,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11" (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 [2021-08-12 23:34:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-12 23:34:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-08-12 23:34:11,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-08-12 23:34:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-08-12 23:34:11,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-08-12 23:34:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-12 23:34:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-12 23:34:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-12 23:34:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-12 23:34:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-12 23:34:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-12 23:34:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 23:34:11,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 23:34:11,758 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 23:34:12,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 23:34:12,222 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-12 23:34:12,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 11:34:12 BoogieIcfgContainer [2021-08-12 23:34:12,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 23:34:12,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 23:34:12,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 23:34:12,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 23:34:12,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.08 11:34:11" (1/3) ... [2021-08-12 23:34:12,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bc6879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 11:34:12, skipping insertion in model container [2021-08-12 23:34:12,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 11:34:11" (2/3) ... [2021-08-12 23:34:12,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bc6879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 11:34:12, skipping insertion in model container [2021-08-12 23:34:12,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 11:34:12" (3/3) ... [2021-08-12 23:34:12,230 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-08-12 23:34:12,234 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 23:34:12,235 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-12 23:34:12,235 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 23:34:12,270 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,271 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,271 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,272 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,273 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,273 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,273 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,273 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,274 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,274 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,274 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,275 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,276 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,276 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,276 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,277 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,277 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,278 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,278 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,279 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,279 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,281 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,283 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,285 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,286 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,287 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,287 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,296 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,297 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,297 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,297 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,297 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 23:34:12,308 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-12 23:34:12,329 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-12 23:34:12,355 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 23:34:12,355 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 23:34:12,355 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 23:34:12,355 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 23:34:12,355 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 23:34:12,355 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 23:34:12,355 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 23:34:12,356 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 23:34:12,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 94 places, 102 transitions, 226 flow [2021-08-12 23:34:12,421 INFO L129 PetriNetUnfolder]: 14/102 cut-off events. [2021-08-12 23:34:12,422 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-12 23:34:12,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 102 events. 14/102 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place. [2021-08-12 23:34:12,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 102 transitions, 226 flow [2021-08-12 23:34:12,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 90 transitions, 192 flow [2021-08-12 23:34:12,459 INFO L129 PetriNetUnfolder]: 4/47 cut-off events. [2021-08-12 23:34:12,459 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 23:34:12,460 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 23:34:12,465 INFO L266 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] [2021-08-12 23:34:12,466 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 23:34:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 23:34:12,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1600769794, now seen corresponding path program 1 times [2021-08-12 23:34:12,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 23:34:12,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615678440] [2021-08-12 23:34:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 23:34:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 23:34:12,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:12,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:34:12,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:12,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:34:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 23:34:12,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 23:34:12,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615678440] [2021-08-12 23:34:12,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615678440] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 23:34:12,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 23:34:12,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 23:34:12,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774290748] [2021-08-12 23:34:12,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-08-12 23:34:12,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 23:34:12,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-12 23:34:12,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-12 23:34:12,702 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 102 [2021-08-12 23:34:12,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 192 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:12,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 23:34:12,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 102 [2021-08-12 23:34:12,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 23:34:12,728 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2021-08-12 23:34:12,729 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-12 23:34:12,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 85 events. 6/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 7/83 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-08-12 23:34:12,732 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 0 selfloop transitions, 0 changer transitions 1/83 dead transitions. [2021-08-12 23:34:12,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 178 flow [2021-08-12 23:34:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-12 23:34:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-08-12 23:34:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 197 transitions. [2021-08-12 23:34:12,742 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9656862745098039 [2021-08-12 23:34:12,743 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 197 transitions. [2021-08-12 23:34:12,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 197 transitions. [2021-08-12 23:34:12,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 23:34:12,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 197 transitions. [2021-08-12 23:34:12,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:12,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:12,758 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:12,759 INFO L348 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2021-08-12 23:34:12,759 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 178 flow [2021-08-12 23:34:12,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:12,759 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 23:34:12,759 INFO L266 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] [2021-08-12 23:34:12,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 23:34:12,760 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 23:34:12,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 23:34:12,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1600740003, now seen corresponding path program 1 times [2021-08-12 23:34:12,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 23:34:12,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604973400] [2021-08-12 23:34:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 23:34:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 23:34:12,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:12,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:34:12,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:12,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 23:34:12,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:12,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:34:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 23:34:12,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 23:34:12,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604973400] [2021-08-12 23:34:12,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604973400] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 23:34:12,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 23:34:12,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 23:34:12,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816149690] [2021-08-12 23:34:12,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 23:34:12,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 23:34:12,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 23:34:12,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 23:34:12,859 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 102 [2021-08-12 23:34:12,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:12,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 23:34:12,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 102 [2021-08-12 23:34:12,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 23:34:12,903 INFO L129 PetriNetUnfolder]: 13/145 cut-off events. [2021-08-12 23:34:12,903 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-08-12 23:34:12,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 145 events. 13/145 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 488 event pairs, 2 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 184. Up to 18 conditions per place. [2021-08-12 23:34:12,905 INFO L132 encePairwiseOnDemand]: 97/102 looper letters, 7 selfloop transitions, 3 changer transitions 1/86 dead transitions. [2021-08-12 23:34:12,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 86 transitions, 204 flow [2021-08-12 23:34:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 23:34:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 23:34:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2021-08-12 23:34:12,908 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9019607843137255 [2021-08-12 23:34:12,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2021-08-12 23:34:12,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2021-08-12 23:34:12,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 23:34:12,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2021-08-12 23:34:12,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:12,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:12,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:12,911 INFO L348 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2021-08-12 23:34:12,911 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 204 flow [2021-08-12 23:34:12,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:12,912 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 23:34:12,912 INFO L266 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] [2021-08-12 23:34:12,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 23:34:12,912 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 23:34:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 23:34:12,913 INFO L82 PathProgramCache]: Analyzing trace with hash -339940789, now seen corresponding path program 1 times [2021-08-12 23:34:12,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 23:34:12,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800302086] [2021-08-12 23:34:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 23:34:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 23:34:12,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:12,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:34:12,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:12,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 23:34:12,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:12,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:34:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 23:34:12,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 23:34:12,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800302086] [2021-08-12 23:34:12,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800302086] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 23:34:12,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 23:34:12,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 23:34:12,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699306827] [2021-08-12 23:34:12,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 23:34:12,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 23:34:12,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 23:34:12,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 23:34:12,973 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 102 [2021-08-12 23:34:12,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:12,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 23:34:12,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 102 [2021-08-12 23:34:12,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 23:34:13,025 INFO L129 PetriNetUnfolder]: 8/127 cut-off events. [2021-08-12 23:34:13,026 INFO L130 PetriNetUnfolder]: For 11/17 co-relation queries the response was YES. [2021-08-12 23:34:13,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 127 events. 8/127 cut-off events. For 11/17 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 379 event pairs, 2 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 175. Up to 11 conditions per place. [2021-08-12 23:34:13,027 INFO L132 encePairwiseOnDemand]: 98/102 looper letters, 6 selfloop transitions, 2 changer transitions 1/84 dead transitions. [2021-08-12 23:34:13,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 212 flow [2021-08-12 23:34:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 23:34:13,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 23:34:13,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2021-08-12 23:34:13,030 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8954248366013072 [2021-08-12 23:34:13,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2021-08-12 23:34:13,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2021-08-12 23:34:13,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 23:34:13,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2021-08-12 23:34:13,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,033 INFO L348 CegarLoopForPetriNet]: 83 programPoint places, 5 predicate places. [2021-08-12 23:34:13,033 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 212 flow [2021-08-12 23:34:13,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,033 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 23:34:13,033 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 23:34:13,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 23:34:13,034 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 23:34:13,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 23:34:13,034 INFO L82 PathProgramCache]: Analyzing trace with hash 234972812, now seen corresponding path program 1 times [2021-08-12 23:34:13,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 23:34:13,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702751180] [2021-08-12 23:34:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 23:34:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 23:34:13,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:13,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:34:13,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:13,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 23:34:13,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:13,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 23:34:13,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:13,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:34:13,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 23:34:13,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 23:34:13,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702751180] [2021-08-12 23:34:13,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702751180] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 23:34:13,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 23:34:13,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 23:34:13,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931946580] [2021-08-12 23:34:13,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 23:34:13,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 23:34:13,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 23:34:13,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 23:34:13,123 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2021-08-12 23:34:13,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 23:34:13,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2021-08-12 23:34:13,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 23:34:13,214 INFO L129 PetriNetUnfolder]: 47/280 cut-off events. [2021-08-12 23:34:13,214 INFO L130 PetriNetUnfolder]: For 22/28 co-relation queries the response was YES. [2021-08-12 23:34:13,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 280 events. 47/280 cut-off events. For 22/28 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1350 event pairs, 9 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 410. Up to 27 conditions per place. [2021-08-12 23:34:13,218 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 11 selfloop transitions, 10 changer transitions 1/95 dead transitions. [2021-08-12 23:34:13,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 95 transitions, 276 flow [2021-08-12 23:34:13,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 23:34:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 23:34:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-08-12 23:34:13,220 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8784313725490196 [2021-08-12 23:34:13,220 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-08-12 23:34:13,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-08-12 23:34:13,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 23:34:13,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-08-12 23:34:13,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,225 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,226 INFO L348 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2021-08-12 23:34:13,226 INFO L482 AbstractCegarLoop]: Abstraction has has 92 places, 95 transitions, 276 flow [2021-08-12 23:34:13,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,226 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 23:34:13,226 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 23:34:13,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 23:34:13,226 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-12 23:34:13,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 23:34:13,227 INFO L82 PathProgramCache]: Analyzing trace with hash 303952502, now seen corresponding path program 2 times [2021-08-12 23:34:13,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 23:34:13,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667078491] [2021-08-12 23:34:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 23:34:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 23:34:13,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:13,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:34:13,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:13,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 23:34:13,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:13,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-12 23:34:13,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 23:34:13,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 23:34:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 23:34:13,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 23:34:13,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667078491] [2021-08-12 23:34:13,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667078491] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 23:34:13,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 23:34:13,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-12 23:34:13,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630235727] [2021-08-12 23:34:13,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 23:34:13,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 23:34:13,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 23:34:13,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 23:34:13,311 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 102 [2021-08-12 23:34:13,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 95 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 23:34:13,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 102 [2021-08-12 23:34:13,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 23:34:13,406 INFO L129 PetriNetUnfolder]: 120/453 cut-off events. [2021-08-12 23:34:13,406 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-08-12 23:34:13,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 453 events. 120/453 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2473 event pairs, 15 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 705. Up to 39 conditions per place. [2021-08-12 23:34:13,409 INFO L132 encePairwiseOnDemand]: 95/102 looper letters, 0 selfloop transitions, 0 changer transitions 103/103 dead transitions. [2021-08-12 23:34:13,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 103 transitions, 331 flow [2021-08-12 23:34:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-12 23:34:13,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-12 23:34:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2021-08-12 23:34:13,412 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8803921568627451 [2021-08-12 23:34:13,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 449 transitions. [2021-08-12 23:34:13,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 449 transitions. [2021-08-12 23:34:13,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 23:34:13,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 449 transitions. [2021-08-12 23:34:13,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,415 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,415 INFO L348 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2021-08-12 23:34:13,415 INFO L482 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 331 flow [2021-08-12 23:34:13,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 23:34:13,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown