/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix057_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:14:59,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:14:59,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:14:59,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:14:59,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:14:59,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:14:59,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:14:59,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:14:59,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:14:59,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:14:59,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:14:59,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:14:59,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:14:59,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:14:59,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:14:59,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:14:59,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:14:59,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:14:59,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:14:59,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:14:59,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:14:59,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:14:59,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:14:59,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:14:59,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:14:59,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:14:59,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:14:59,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:14:59,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 20:14:59,575 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:14:59,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:14:59,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:14:59,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:14:59,577 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:14:59,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:14:59,577 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:14:59,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:14:59,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:14:59,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:14:59,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:14:59,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:14:59,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:14:59,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:14:59,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:14:59,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:14:59,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:14:59,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:14:59,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:14:59,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:14:59,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:14:59,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:14:59,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:14:59,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:14:59,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:14:59,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:14:59,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:14:59,580 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:14:59,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:14:59,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:14:59,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:14:59,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:14:59,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:14:59,776 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:14:59,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_rmo.opt.i [2021-03-11 20:14:59,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/991fab83a/484130ea99a64484a1cfa4fa26ae3ee2/FLAG1a104cb5a [2021-03-11 20:15:00,235 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:15:00,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_rmo.opt.i [2021-03-11 20:15:00,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/991fab83a/484130ea99a64484a1cfa4fa26ae3ee2/FLAG1a104cb5a [2021-03-11 20:15:00,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/991fab83a/484130ea99a64484a1cfa4fa26ae3ee2 [2021-03-11 20:15:00,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:15:00,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:15:00,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:15:00,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:15:00,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:15:00,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:15:00" (1/1) ... [2021-03-11 20:15:00,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a864365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:00, skipping insertion in model container [2021-03-11 20:15:00,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:15:00" (1/1) ... [2021-03-11 20:15:00,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:15:00,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:15:00,734 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_rmo.opt.i[948,961] [2021-03-11 20:15:00,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:15:00,913 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:15:00,919 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_rmo.opt.i[948,961] [2021-03-11 20:15:00,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:15:01,012 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:15:01,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01 WrapperNode [2021-03-11 20:15:01,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:15:01,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:15:01,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:15:01,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:15:01,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01" (1/1) ... [2021-03-11 20:15:01,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01" (1/1) ... [2021-03-11 20:15:01,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:15:01,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:15:01,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:15:01,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:15:01,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01" (1/1) ... [2021-03-11 20:15:01,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01" (1/1) ... [2021-03-11 20:15:01,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01" (1/1) ... [2021-03-11 20:15:01,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01" (1/1) ... [2021-03-11 20:15:01,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01" (1/1) ... [2021-03-11 20:15:01,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01" (1/1) ... [2021-03-11 20:15:01,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01" (1/1) ... [2021-03-11 20:15:01,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:15:01,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:15:01,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:15:01,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:15:01,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:15:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:15:01,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:15:01,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:15:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:15:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:15:01,221 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:15:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:15:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:15:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:15:01,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:15:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-11 20:15:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-11 20:15:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:15:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:15:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:15:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:15:01,231 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:15:02,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:15:02,687 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-11 20:15:02,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:15:02 BoogieIcfgContainer [2021-03-11 20:15:02,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:15:02,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:15:02,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:15:02,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:15:02,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:15:00" (1/3) ... [2021-03-11 20:15:02,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7376ddd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:15:02, skipping insertion in model container [2021-03-11 20:15:02,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:15:01" (2/3) ... [2021-03-11 20:15:02,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7376ddd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:15:02, skipping insertion in model container [2021-03-11 20:15:02,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:15:02" (3/3) ... [2021-03-11 20:15:02,696 INFO L111 eAbstractionObserver]: Analyzing ICFG mix057_rmo.opt.i [2021-03-11 20:15:02,702 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:15:02,704 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 20:15:02,705 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:15:02,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,736 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,738 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,738 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,738 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,738 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,738 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,738 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,738 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,738 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,739 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,739 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,739 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,739 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,739 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,739 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,739 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,739 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,739 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,740 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,740 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,740 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,740 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,740 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,740 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,740 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,741 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,741 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,741 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,741 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,741 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,742 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,742 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,743 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,743 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,743 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,744 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,744 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,746 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,746 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,746 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,746 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,746 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,746 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,746 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,746 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,749 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,750 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,751 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,751 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,751 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,755 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,755 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,755 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,755 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,755 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,755 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,755 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,756 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,757 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:15:02,757 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:15:02,768 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-11 20:15:02,787 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:15:02,787 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:15:02,787 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:15:02,787 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:15:02,787 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:15:02,788 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:15:02,788 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:15:02,788 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:15:02,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 244 flow [2021-03-11 20:15:02,831 INFO L129 PetriNetUnfolder]: 2/108 cut-off events. [2021-03-11 20:15:02,831 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:15:02,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 2/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2021-03-11 20:15:02,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 112 transitions, 244 flow [2021-03-11 20:15:02,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 108 transitions, 228 flow [2021-03-11 20:15:02,847 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:15:02,852 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 108 transitions, 228 flow [2021-03-11 20:15:02,853 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 108 transitions, 228 flow [2021-03-11 20:15:02,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 108 transitions, 228 flow [2021-03-11 20:15:02,866 INFO L129 PetriNetUnfolder]: 2/108 cut-off events. [2021-03-11 20:15:02,866 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:15:02,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 2/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2021-03-11 20:15:02,868 INFO L116 LiptonReduction]: Number of co-enabled transitions 2406 [2021-03-11 20:15:04,750 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 228 DAG size of output: 187 [2021-03-11 20:15:05,069 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-11 20:15:06,421 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 312 DAG size of output: 268 [2021-03-11 20:15:06,954 WARN L205 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2021-03-11 20:15:08,546 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-03-11 20:15:08,945 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 91 [2021-03-11 20:15:09,078 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-03-11 20:15:10,479 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2021-03-11 20:15:10,658 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-03-11 20:15:10,960 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2021-03-11 20:15:11,099 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-03-11 20:15:11,103 INFO L131 LiptonReduction]: Checked pairs total: 6239 [2021-03-11 20:15:11,103 INFO L133 LiptonReduction]: Total number of compositions: 91 [2021-03-11 20:15:11,104 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8259 [2021-03-11 20:15:11,110 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-11 20:15:11,110 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:15:11,110 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:11,110 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:11,110 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:11,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:11,113 INFO L82 PathProgramCache]: Analyzing trace with hash 92749097, now seen corresponding path program 1 times [2021-03-11 20:15:11,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:11,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96066337] [2021-03-11 20:15:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:11,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:11,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:11,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96066337] [2021-03-11 20:15:11,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:11,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:15:11,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672288367] [2021-03-11 20:15:11,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:15:11,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:11,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:15:11,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:15:11,287 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 203 [2021-03-11 20:15:11,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 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) [2021-03-11 20:15:11,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:11,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 203 [2021-03-11 20:15:11,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:11,350 INFO L129 PetriNetUnfolder]: 16/68 cut-off events. [2021-03-11 20:15:11,350 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:15:11,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 68 events. 16/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 213 event pairs, 2 based on Foata normal form. 6/72 useless extension candidates. Maximal degree in co-relation 105. Up to 27 conditions per place. [2021-03-11 20:15:11,352 INFO L132 encePairwiseOnDemand]: 199/203 looper letters, 7 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2021-03-11 20:15:11,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 30 transitions, 90 flow [2021-03-11 20:15:11,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:15:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:15:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2021-03-11 20:15:11,362 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8669950738916257 [2021-03-11 20:15:11,362 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2021-03-11 20:15:11,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2021-03-11 20:15:11,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:11,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2021-03-11 20:15:11,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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) [2021-03-11 20:15:11,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2021-03-11 20:15:11,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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) [2021-03-11 20:15:11,375 INFO L185 Difference]: Start difference. First operand has 41 places, 29 transitions, 70 flow. Second operand 3 states and 528 transitions. [2021-03-11 20:15:11,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 30 transitions, 90 flow [2021-03-11 20:15:11,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 86 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 20:15:11,378 INFO L241 Difference]: Finished difference. Result has 38 places, 27 transitions, 66 flow [2021-03-11 20:15:11,379 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2021-03-11 20:15:11,380 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2021-03-11 20:15:11,380 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 66 flow [2021-03-11 20:15:11,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 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) [2021-03-11 20:15:11,380 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:11,380 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:11,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:15:11,381 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:11,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1424927287, now seen corresponding path program 1 times [2021-03-11 20:15:11,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:11,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005181460] [2021-03-11 20:15:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:11,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:11,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:11,501 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:11,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:11,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005181460] [2021-03-11 20:15:11,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:11,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:15:11,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245193424] [2021-03-11 20:15:11,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:15:11,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:11,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:15:11,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:15:11,506 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 203 [2021-03-11 20:15:11,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 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) [2021-03-11 20:15:11,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:11,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 203 [2021-03-11 20:15:11,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:11,530 INFO L129 PetriNetUnfolder]: 13/63 cut-off events. [2021-03-11 20:15:11,530 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:15:11,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 63 events. 13/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 179 event pairs, 2 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 98. Up to 15 conditions per place. [2021-03-11 20:15:11,531 INFO L132 encePairwiseOnDemand]: 197/203 looper letters, 4 selfloop transitions, 3 changer transitions 8/36 dead transitions. [2021-03-11 20:15:11,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 114 flow [2021-03-11 20:15:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:15:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:15:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 872 transitions. [2021-03-11 20:15:11,533 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8591133004926108 [2021-03-11 20:15:11,533 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 872 transitions. [2021-03-11 20:15:11,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 872 transitions. [2021-03-11 20:15:11,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:11,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 872 transitions. [2021-03-11 20:15:11,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.4) internal successors, (872), 5 states have internal predecessors, (872), 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) [2021-03-11 20:15:11,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:11,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:11,537 INFO L185 Difference]: Start difference. First operand has 38 places, 27 transitions, 66 flow. Second operand 5 states and 872 transitions. [2021-03-11 20:15:11,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 114 flow [2021-03-11 20:15:11,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:15:11,538 INFO L241 Difference]: Finished difference. Result has 43 places, 28 transitions, 87 flow [2021-03-11 20:15:11,538 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2021-03-11 20:15:11,538 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2021-03-11 20:15:11,539 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 87 flow [2021-03-11 20:15:11,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 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) [2021-03-11 20:15:11,539 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:11,539 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:11,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:15:11,539 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:11,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:11,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1223076667, now seen corresponding path program 1 times [2021-03-11 20:15:11,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:11,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443319938] [2021-03-11 20:15:11,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:11,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:11,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:11,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:11,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:11,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443319938] [2021-03-11 20:15:11,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:11,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:15:11,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858210836] [2021-03-11 20:15:11,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:15:11,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:11,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:15:11,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:15:11,598 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 203 [2021-03-11 20:15:11,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 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) [2021-03-11 20:15:11,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:11,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 203 [2021-03-11 20:15:11,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:11,620 INFO L129 PetriNetUnfolder]: 19/82 cut-off events. [2021-03-11 20:15:11,620 INFO L130 PetriNetUnfolder]: For 50/59 co-relation queries the response was YES. [2021-03-11 20:15:11,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 82 events. 19/82 cut-off events. For 50/59 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 292 event pairs, 6 based on Foata normal form. 5/81 useless extension candidates. Maximal degree in co-relation 170. Up to 26 conditions per place. [2021-03-11 20:15:11,621 INFO L132 encePairwiseOnDemand]: 198/203 looper letters, 4 selfloop transitions, 3 changer transitions 5/35 dead transitions. [2021-03-11 20:15:11,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 127 flow [2021-03-11 20:15:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:15:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:15:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 869 transitions. [2021-03-11 20:15:11,622 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8561576354679803 [2021-03-11 20:15:11,622 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 869 transitions. [2021-03-11 20:15:11,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 869 transitions. [2021-03-11 20:15:11,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:11,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 869 transitions. [2021-03-11 20:15:11,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 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) [2021-03-11 20:15:11,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:11,626 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:11,626 INFO L185 Difference]: Start difference. First operand has 43 places, 28 transitions, 87 flow. Second operand 5 states and 869 transitions. [2021-03-11 20:15:11,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 127 flow [2021-03-11 20:15:11,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 122 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:15:11,627 INFO L241 Difference]: Finished difference. Result has 45 places, 30 transitions, 109 flow [2021-03-11 20:15:11,627 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2021-03-11 20:15:11,628 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2021-03-11 20:15:11,628 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 109 flow [2021-03-11 20:15:11,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 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) [2021-03-11 20:15:11,628 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:11,628 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:11,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:15:11,628 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:11,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:11,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1012850751, now seen corresponding path program 1 times [2021-03-11 20:15:11,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:11,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734833799] [2021-03-11 20:15:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:11,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:11,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:11,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:11,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:11,662 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:11,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:11,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734833799] [2021-03-11 20:15:11,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:11,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:15:11,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219534422] [2021-03-11 20:15:11,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:15:11,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:11,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:15:11,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:15:11,666 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 203 [2021-03-11 20:15:11,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2021-03-11 20:15:11,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:11,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 203 [2021-03-11 20:15:11,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:11,689 INFO L129 PetriNetUnfolder]: 11/80 cut-off events. [2021-03-11 20:15:11,689 INFO L130 PetriNetUnfolder]: For 91/126 co-relation queries the response was YES. [2021-03-11 20:15:11,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 80 events. 11/80 cut-off events. For 91/126 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 322 event pairs, 2 based on Foata normal form. 8/82 useless extension candidates. Maximal degree in co-relation 199. Up to 23 conditions per place. [2021-03-11 20:15:11,690 INFO L132 encePairwiseOnDemand]: 199/203 looper letters, 5 selfloop transitions, 3 changer transitions 2/33 dead transitions. [2021-03-11 20:15:11,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 149 flow [2021-03-11 20:15:11,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:15:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:15:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 866 transitions. [2021-03-11 20:15:11,692 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8532019704433498 [2021-03-11 20:15:11,692 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 866 transitions. [2021-03-11 20:15:11,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 866 transitions. [2021-03-11 20:15:11,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:11,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 866 transitions. [2021-03-11 20:15:11,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 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) [2021-03-11 20:15:11,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:11,696 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:11,696 INFO L185 Difference]: Start difference. First operand has 45 places, 30 transitions, 109 flow. Second operand 5 states and 866 transitions. [2021-03-11 20:15:11,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 149 flow [2021-03-11 20:15:11,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 33 transitions, 138 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-11 20:15:11,697 INFO L241 Difference]: Finished difference. Result has 48 places, 30 transitions, 117 flow [2021-03-11 20:15:11,697 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=48, PETRI_TRANSITIONS=30} [2021-03-11 20:15:11,697 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2021-03-11 20:15:11,697 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 30 transitions, 117 flow [2021-03-11 20:15:11,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2021-03-11 20:15:11,698 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:11,698 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:11,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:15:11,698 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:11,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:11,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1667504759, now seen corresponding path program 1 times [2021-03-11 20:15:11,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:11,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290630689] [2021-03-11 20:15:11,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:11,784 INFO L142 QuantifierPusher]: treesize reduction 10, result has 61.5 percent of original size [2021-03-11 20:15:11,785 INFO L147 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size 11 [2021-03-11 20:15:11,797 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-03-11 20:15:11,798 INFO L147 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size 15 [2021-03-11 20:15:11,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:11,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:11,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290630689] [2021-03-11 20:15:11,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:11,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:15:11,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645479743] [2021-03-11 20:15:11,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:15:11,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:11,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:15:11,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:15:11,817 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 203 [2021-03-11 20:15:11,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 30 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 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) [2021-03-11 20:15:11,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:11,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 203 [2021-03-11 20:15:11,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:11,947 INFO L129 PetriNetUnfolder]: 246/533 cut-off events. [2021-03-11 20:15:11,947 INFO L130 PetriNetUnfolder]: For 1482/1556 co-relation queries the response was YES. [2021-03-11 20:15:11,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 533 events. 246/533 cut-off events. For 1482/1556 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3210 event pairs, 157 based on Foata normal form. 42/537 useless extension candidates. Maximal degree in co-relation 1483. Up to 291 conditions per place. [2021-03-11 20:15:11,953 INFO L132 encePairwiseOnDemand]: 197/203 looper letters, 7 selfloop transitions, 6 changer transitions 7/42 dead transitions. [2021-03-11 20:15:11,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 187 flow [2021-03-11 20:15:11,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:15:11,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:15:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 964 transitions. [2021-03-11 20:15:11,955 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7914614121510674 [2021-03-11 20:15:11,955 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 964 transitions. [2021-03-11 20:15:11,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 964 transitions. [2021-03-11 20:15:11,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:11,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 964 transitions. [2021-03-11 20:15:11,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 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) [2021-03-11 20:15:11,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2021-03-11 20:15:11,959 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2021-03-11 20:15:11,959 INFO L185 Difference]: Start difference. First operand has 48 places, 30 transitions, 117 flow. Second operand 6 states and 964 transitions. [2021-03-11 20:15:11,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 187 flow [2021-03-11 20:15:11,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 178 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-11 20:15:11,964 INFO L241 Difference]: Finished difference. Result has 52 places, 35 transitions, 149 flow [2021-03-11 20:15:11,965 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2021-03-11 20:15:11,966 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2021-03-11 20:15:11,966 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 149 flow [2021-03-11 20:15:11,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 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) [2021-03-11 20:15:11,966 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:11,966 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:11,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:15:11,966 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:11,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:11,967 INFO L82 PathProgramCache]: Analyzing trace with hash -187053725, now seen corresponding path program 1 times [2021-03-11 20:15:11,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:11,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327008048] [2021-03-11 20:15:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:12,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 20:15:12,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:15:12,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:15:12,061 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:12,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:12,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327008048] [2021-03-11 20:15:12,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:12,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:15:12,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797444587] [2021-03-11 20:15:12,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:15:12,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:12,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:15:12,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:15:12,066 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 203 [2021-03-11 20:15:12,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 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) [2021-03-11 20:15:12,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:12,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 203 [2021-03-11 20:15:12,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:12,205 INFO L129 PetriNetUnfolder]: 194/438 cut-off events. [2021-03-11 20:15:12,205 INFO L130 PetriNetUnfolder]: For 1175/1232 co-relation queries the response was YES. [2021-03-11 20:15:12,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 438 events. 194/438 cut-off events. For 1175/1232 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2525 event pairs, 63 based on Foata normal form. 39/448 useless extension candidates. Maximal degree in co-relation 1333. Up to 216 conditions per place. [2021-03-11 20:15:12,208 INFO L132 encePairwiseOnDemand]: 198/203 looper letters, 9 selfloop transitions, 6 changer transitions 5/42 dead transitions. [2021-03-11 20:15:12,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 42 transitions, 215 flow [2021-03-11 20:15:12,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:15:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:15:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 926 transitions. [2021-03-11 20:15:12,210 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7602627257799671 [2021-03-11 20:15:12,210 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 926 transitions. [2021-03-11 20:15:12,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 926 transitions. [2021-03-11 20:15:12,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:12,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 926 transitions. [2021-03-11 20:15:12,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 154.33333333333334) internal successors, (926), 6 states have internal predecessors, (926), 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) [2021-03-11 20:15:12,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2021-03-11 20:15:12,214 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2021-03-11 20:15:12,214 INFO L185 Difference]: Start difference. First operand has 52 places, 35 transitions, 149 flow. Second operand 6 states and 926 transitions. [2021-03-11 20:15:12,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 42 transitions, 215 flow [2021-03-11 20:15:12,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 211 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-11 20:15:12,218 INFO L241 Difference]: Finished difference. Result has 56 places, 35 transitions, 166 flow [2021-03-11 20:15:12,218 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=56, PETRI_TRANSITIONS=35} [2021-03-11 20:15:12,218 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2021-03-11 20:15:12,218 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 35 transitions, 166 flow [2021-03-11 20:15:12,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 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) [2021-03-11 20:15:12,218 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:12,218 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:12,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:15:12,219 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:12,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:12,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1823530859, now seen corresponding path program 1 times [2021-03-11 20:15:12,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:12,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736121099] [2021-03-11 20:15:12,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:12,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:15:12,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 20:15:12,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 20:15:12,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:12,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:12,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736121099] [2021-03-11 20:15:12,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:12,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:15:12,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953806367] [2021-03-11 20:15:12,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:15:12,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:12,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:15:12,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:15:12,305 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 203 [2021-03-11 20:15:12,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 35 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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) [2021-03-11 20:15:12,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:12,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 203 [2021-03-11 20:15:12,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:12,379 INFO L129 PetriNetUnfolder]: 156/375 cut-off events. [2021-03-11 20:15:12,379 INFO L130 PetriNetUnfolder]: For 1165/1220 co-relation queries the response was YES. [2021-03-11 20:15:12,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 375 events. 156/375 cut-off events. For 1165/1220 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2218 event pairs, 92 based on Foata normal form. 31/375 useless extension candidates. Maximal degree in co-relation 1176. Up to 197 conditions per place. [2021-03-11 20:15:12,382 INFO L132 encePairwiseOnDemand]: 198/203 looper letters, 11 selfloop transitions, 5 changer transitions 6/44 dead transitions. [2021-03-11 20:15:12,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 44 transitions, 246 flow [2021-03-11 20:15:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:15:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:15:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 820 transitions. [2021-03-11 20:15:12,384 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8078817733990148 [2021-03-11 20:15:12,384 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 820 transitions. [2021-03-11 20:15:12,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 820 transitions. [2021-03-11 20:15:12,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:12,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 820 transitions. [2021-03-11 20:15:12,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 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) [2021-03-11 20:15:12,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:12,387 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:12,387 INFO L185 Difference]: Start difference. First operand has 56 places, 35 transitions, 166 flow. Second operand 5 states and 820 transitions. [2021-03-11 20:15:12,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 44 transitions, 246 flow [2021-03-11 20:15:12,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 44 transitions, 231 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-11 20:15:12,390 INFO L241 Difference]: Finished difference. Result has 57 places, 37 transitions, 186 flow [2021-03-11 20:15:12,390 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2021-03-11 20:15:12,390 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2021-03-11 20:15:12,390 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 186 flow [2021-03-11 20:15:12,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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) [2021-03-11 20:15:12,392 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:12,392 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:12,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:15:12,392 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:12,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:12,392 INFO L82 PathProgramCache]: Analyzing trace with hash -918520257, now seen corresponding path program 1 times [2021-03-11 20:15:12,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:12,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938448925] [2021-03-11 20:15:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:12,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:15:12,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 20:15:12,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:15:12,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 20:15:12,469 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:12,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:12,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938448925] [2021-03-11 20:15:12,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:12,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:15:12,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625216990] [2021-03-11 20:15:12,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:15:12,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:12,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:15:12,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:15:12,475 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 203 [2021-03-11 20:15:12,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 153.85714285714286) internal successors, (1077), 7 states have internal predecessors, (1077), 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) [2021-03-11 20:15:12,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:12,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 203 [2021-03-11 20:15:12,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:12,617 INFO L129 PetriNetUnfolder]: 161/378 cut-off events. [2021-03-11 20:15:12,617 INFO L130 PetriNetUnfolder]: For 1239/1275 co-relation queries the response was YES. [2021-03-11 20:15:12,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1363 conditions, 378 events. 161/378 cut-off events. For 1239/1275 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2152 event pairs, 36 based on Foata normal form. 25/380 useless extension candidates. Maximal degree in co-relation 1339. Up to 188 conditions per place. [2021-03-11 20:15:12,620 INFO L132 encePairwiseOnDemand]: 196/203 looper letters, 12 selfloop transitions, 10 changer transitions 5/49 dead transitions. [2021-03-11 20:15:12,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 296 flow [2021-03-11 20:15:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:15:12,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:15:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1094 transitions. [2021-03-11 20:15:12,623 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7698803659394793 [2021-03-11 20:15:12,623 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1094 transitions. [2021-03-11 20:15:12,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1094 transitions. [2021-03-11 20:15:12,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:12,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1094 transitions. [2021-03-11 20:15:12,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 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) [2021-03-11 20:15:12,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:12,627 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:12,627 INFO L185 Difference]: Start difference. First operand has 57 places, 37 transitions, 186 flow. Second operand 7 states and 1094 transitions. [2021-03-11 20:15:12,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 296 flow [2021-03-11 20:15:12,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 49 transitions, 280 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-11 20:15:12,631 INFO L241 Difference]: Finished difference. Result has 61 places, 41 transitions, 221 flow [2021-03-11 20:15:12,631 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2021-03-11 20:15:12,631 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2021-03-11 20:15:12,631 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 221 flow [2021-03-11 20:15:12,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 153.85714285714286) internal successors, (1077), 7 states have internal predecessors, (1077), 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) [2021-03-11 20:15:12,632 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:12,632 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:12,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:15:12,632 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:12,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:12,632 INFO L82 PathProgramCache]: Analyzing trace with hash 983650055, now seen corresponding path program 2 times [2021-03-11 20:15:12,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:12,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765795307] [2021-03-11 20:15:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:12,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:15:12,686 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-03-11 20:15:12,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 20:15:12,701 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.8 percent of original size [2021-03-11 20:15:12,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 20:15:12,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 20:15:12,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:12,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:12,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765795307] [2021-03-11 20:15:12,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:12,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:15:12,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851900903] [2021-03-11 20:15:12,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:15:12,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:12,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:15:12,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:15:12,725 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 203 [2021-03-11 20:15:12,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 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) [2021-03-11 20:15:12,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:12,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 203 [2021-03-11 20:15:12,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:12,853 INFO L129 PetriNetUnfolder]: 147/374 cut-off events. [2021-03-11 20:15:12,853 INFO L130 PetriNetUnfolder]: For 1616/1654 co-relation queries the response was YES. [2021-03-11 20:15:12,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 374 events. 147/374 cut-off events. For 1616/1654 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2207 event pairs, 33 based on Foata normal form. 30/379 useless extension candidates. Maximal degree in co-relation 1468. Up to 153 conditions per place. [2021-03-11 20:15:12,856 INFO L132 encePairwiseOnDemand]: 196/203 looper letters, 15 selfloop transitions, 9 changer transitions 5/51 dead transitions. [2021-03-11 20:15:12,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 51 transitions, 355 flow [2021-03-11 20:15:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:15:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:15:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1065 transitions. [2021-03-11 20:15:12,858 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7494722026741731 [2021-03-11 20:15:12,858 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1065 transitions. [2021-03-11 20:15:12,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1065 transitions. [2021-03-11 20:15:12,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:12,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1065 transitions. [2021-03-11 20:15:12,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.14285714285714) internal successors, (1065), 7 states have internal predecessors, (1065), 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) [2021-03-11 20:15:12,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:12,863 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:12,863 INFO L185 Difference]: Start difference. First operand has 61 places, 41 transitions, 221 flow. Second operand 7 states and 1065 transitions. [2021-03-11 20:15:12,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 51 transitions, 355 flow [2021-03-11 20:15:12,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 51 transitions, 335 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-11 20:15:12,867 INFO L241 Difference]: Finished difference. Result has 66 places, 43 transitions, 259 flow [2021-03-11 20:15:12,867 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=66, PETRI_TRANSITIONS=43} [2021-03-11 20:15:12,867 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2021-03-11 20:15:12,867 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 43 transitions, 259 flow [2021-03-11 20:15:12,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 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) [2021-03-11 20:15:12,868 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:12,868 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:12,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:15:12,868 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:12,868 INFO L82 PathProgramCache]: Analyzing trace with hash 2027313862, now seen corresponding path program 1 times [2021-03-11 20:15:12,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:12,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098344836] [2021-03-11 20:15:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:12,912 INFO L142 QuantifierPusher]: treesize reduction 10, result has 63.0 percent of original size [2021-03-11 20:15:12,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:15:12,921 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-03-11 20:15:12,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 20:15:12,930 INFO L142 QuantifierPusher]: treesize reduction 10, result has 63.0 percent of original size [2021-03-11 20:15:12,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:15:12,941 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-03-11 20:15:12,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 20:15:12,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:12,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 20:15:12,959 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:12,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:12,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098344836] [2021-03-11 20:15:12,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:12,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 20:15:12,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523413915] [2021-03-11 20:15:12,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 20:15:12,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:12,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 20:15:12,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-11 20:15:12,966 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 203 [2021-03-11 20:15:12,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 43 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 148.875) internal successors, (1191), 8 states have internal predecessors, (1191), 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) [2021-03-11 20:15:12,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:12,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 203 [2021-03-11 20:15:12,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:13,080 INFO L129 PetriNetUnfolder]: 152/372 cut-off events. [2021-03-11 20:15:13,080 INFO L130 PetriNetUnfolder]: For 1714/1749 co-relation queries the response was YES. [2021-03-11 20:15:13,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 372 events. 152/372 cut-off events. For 1714/1749 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2088 event pairs, 26 based on Foata normal form. 16/362 useless extension candidates. Maximal degree in co-relation 1645. Up to 195 conditions per place. [2021-03-11 20:15:13,084 INFO L132 encePairwiseOnDemand]: 195/203 looper letters, 16 selfloop transitions, 15 changer transitions 2/55 dead transitions. [2021-03-11 20:15:13,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 55 transitions, 418 flow [2021-03-11 20:15:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:15:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:15:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 908 transitions. [2021-03-11 20:15:13,086 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7454844006568144 [2021-03-11 20:15:13,086 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 908 transitions. [2021-03-11 20:15:13,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 908 transitions. [2021-03-11 20:15:13,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:13,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 908 transitions. [2021-03-11 20:15:13,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.33333333333334) internal successors, (908), 6 states have internal predecessors, (908), 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) [2021-03-11 20:15:13,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2021-03-11 20:15:13,089 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2021-03-11 20:15:13,089 INFO L185 Difference]: Start difference. First operand has 66 places, 43 transitions, 259 flow. Second operand 6 states and 908 transitions. [2021-03-11 20:15:13,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 55 transitions, 418 flow [2021-03-11 20:15:13,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 55 transitions, 389 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-11 20:15:13,093 INFO L241 Difference]: Finished difference. Result has 67 places, 50 transitions, 339 flow [2021-03-11 20:15:13,093 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2021-03-11 20:15:13,093 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2021-03-11 20:15:13,093 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 339 flow [2021-03-11 20:15:13,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 148.875) internal successors, (1191), 8 states have internal predecessors, (1191), 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) [2021-03-11 20:15:13,094 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:13,094 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:13,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:15:13,094 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:13,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1631293572, now seen corresponding path program 2 times [2021-03-11 20:15:13,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:13,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560563671] [2021-03-11 20:15:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:13,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:13,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 20:15:13,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:13,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:15:13,157 INFO L142 QuantifierPusher]: treesize reduction 31, result has 26.2 percent of original size [2021-03-11 20:15:13,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 20:15:13,165 INFO L142 QuantifierPusher]: treesize reduction 45, result has 26.2 percent of original size [2021-03-11 20:15:13,165 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-03-11 20:15:13,178 INFO L142 QuantifierPusher]: treesize reduction 16, result has 56.8 percent of original size [2021-03-11 20:15:13,179 INFO L147 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-03-11 20:15:13,184 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:13,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:13,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560563671] [2021-03-11 20:15:13,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:13,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:15:13,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430571787] [2021-03-11 20:15:13,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:15:13,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:13,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:15:13,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:15:13,191 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 203 [2021-03-11 20:15:13,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 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) [2021-03-11 20:15:13,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:13,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 203 [2021-03-11 20:15:13,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:13,298 INFO L129 PetriNetUnfolder]: 155/381 cut-off events. [2021-03-11 20:15:13,298 INFO L130 PetriNetUnfolder]: For 1864/1899 co-relation queries the response was YES. [2021-03-11 20:15:13,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 381 events. 155/381 cut-off events. For 1864/1899 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2152 event pairs, 40 based on Foata normal form. 16/371 useless extension candidates. Maximal degree in co-relation 1843. Up to 185 conditions per place. [2021-03-11 20:15:13,302 INFO L132 encePairwiseOnDemand]: 195/203 looper letters, 12 selfloop transitions, 22 changer transitions 2/58 dead transitions. [2021-03-11 20:15:13,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 493 flow [2021-03-11 20:15:13,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:15:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:15:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1093 transitions. [2021-03-11 20:15:13,304 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7691766361717101 [2021-03-11 20:15:13,304 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1093 transitions. [2021-03-11 20:15:13,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1093 transitions. [2021-03-11 20:15:13,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:13,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1093 transitions. [2021-03-11 20:15:13,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.14285714285714) internal successors, (1093), 7 states have internal predecessors, (1093), 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) [2021-03-11 20:15:13,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:13,308 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:13,308 INFO L185 Difference]: Start difference. First operand has 67 places, 50 transitions, 339 flow. Second operand 7 states and 1093 transitions. [2021-03-11 20:15:13,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 493 flow [2021-03-11 20:15:13,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 461 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-11 20:15:13,312 INFO L241 Difference]: Finished difference. Result has 72 places, 55 transitions, 433 flow [2021-03-11 20:15:13,312 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2021-03-11 20:15:13,312 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2021-03-11 20:15:13,312 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 433 flow [2021-03-11 20:15:13,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 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) [2021-03-11 20:15:13,312 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:13,312 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:13,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:15:13,313 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:13,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:13,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1016785000, now seen corresponding path program 3 times [2021-03-11 20:15:13,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:13,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174285802] [2021-03-11 20:15:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:13,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:13,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 20:15:13,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:13,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 20:15:13,417 INFO L142 QuantifierPusher]: treesize reduction 20, result has 75.0 percent of original size [2021-03-11 20:15:13,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 20:15:13,439 INFO L142 QuantifierPusher]: treesize reduction 10, result has 63.0 percent of original size [2021-03-11 20:15:13,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:15:13,440 INFO L142 QuantifierPusher]: treesize reduction 10, result has 52.4 percent of original size [2021-03-11 20:15:13,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 20:15:13,448 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:13,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:13,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174285802] [2021-03-11 20:15:13,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:13,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:15:13,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547089937] [2021-03-11 20:15:13,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:15:13,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:13,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:15:13,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:15:13,454 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 203 [2021-03-11 20:15:13,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 433 flow. Second operand has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 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) [2021-03-11 20:15:13,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:13,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 203 [2021-03-11 20:15:13,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:13,564 INFO L129 PetriNetUnfolder]: 161/402 cut-off events. [2021-03-11 20:15:13,564 INFO L130 PetriNetUnfolder]: For 2522/2559 co-relation queries the response was YES. [2021-03-11 20:15:13,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2194 conditions, 402 events. 161/402 cut-off events. For 2522/2559 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2338 event pairs, 29 based on Foata normal form. 18/394 useless extension candidates. Maximal degree in co-relation 2162. Up to 215 conditions per place. [2021-03-11 20:15:13,568 INFO L132 encePairwiseOnDemand]: 195/203 looper letters, 26 selfloop transitions, 13 changer transitions 2/63 dead transitions. [2021-03-11 20:15:13,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 611 flow [2021-03-11 20:15:13,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:15:13,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:15:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1036 transitions. [2021-03-11 20:15:13,570 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.729064039408867 [2021-03-11 20:15:13,570 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1036 transitions. [2021-03-11 20:15:13,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1036 transitions. [2021-03-11 20:15:13,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:13,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1036 transitions. [2021-03-11 20:15:13,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 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) [2021-03-11 20:15:13,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:13,574 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:13,574 INFO L185 Difference]: Start difference. First operand has 72 places, 55 transitions, 433 flow. Second operand 7 states and 1036 transitions. [2021-03-11 20:15:13,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 611 flow [2021-03-11 20:15:13,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 63 transitions, 566 flow, removed 15 selfloop flow, removed 3 redundant places. [2021-03-11 20:15:13,580 INFO L241 Difference]: Finished difference. Result has 76 places, 57 transitions, 465 flow [2021-03-11 20:15:13,580 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=465, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2021-03-11 20:15:13,580 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2021-03-11 20:15:13,580 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 465 flow [2021-03-11 20:15:13,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 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) [2021-03-11 20:15:13,581 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:13,581 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:13,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 20:15:13,581 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:13,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:13,581 INFO L82 PathProgramCache]: Analyzing trace with hash -36482314, now seen corresponding path program 4 times [2021-03-11 20:15:13,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:13,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713077465] [2021-03-11 20:15:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:13,623 INFO L142 QuantifierPusher]: treesize reduction 10, result has 63.0 percent of original size [2021-03-11 20:15:13,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:15:13,632 INFO L142 QuantifierPusher]: treesize reduction 10, result has 66.7 percent of original size [2021-03-11 20:15:13,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 20:15:13,642 INFO L142 QuantifierPusher]: treesize reduction 10, result has 63.0 percent of original size [2021-03-11 20:15:13,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:15:13,650 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.6 percent of original size [2021-03-11 20:15:13,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 20:15:13,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:13,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 20:15:13,679 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:13,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:13,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713077465] [2021-03-11 20:15:13,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:13,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 20:15:13,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483681057] [2021-03-11 20:15:13,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 20:15:13,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:13,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 20:15:13,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 20:15:13,686 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 203 [2021-03-11 20:15:13,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 465 flow. Second operand has 8 states, 8 states have (on average 145.875) internal successors, (1167), 8 states have internal predecessors, (1167), 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) [2021-03-11 20:15:13,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:13,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 203 [2021-03-11 20:15:13,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:13,809 INFO L129 PetriNetUnfolder]: 161/408 cut-off events. [2021-03-11 20:15:13,809 INFO L130 PetriNetUnfolder]: For 2672/2709 co-relation queries the response was YES. [2021-03-11 20:15:13,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 408 events. 161/408 cut-off events. For 2672/2709 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2408 event pairs, 29 based on Foata normal form. 18/400 useless extension candidates. Maximal degree in co-relation 2179. Up to 203 conditions per place. [2021-03-11 20:15:13,813 INFO L132 encePairwiseOnDemand]: 197/203 looper letters, 24 selfloop transitions, 15 changer transitions 2/63 dead transitions. [2021-03-11 20:15:13,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 63 transitions, 623 flow [2021-03-11 20:15:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:15:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:15:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1035 transitions. [2021-03-11 20:15:13,816 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7283603096410978 [2021-03-11 20:15:13,816 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1035 transitions. [2021-03-11 20:15:13,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1035 transitions. [2021-03-11 20:15:13,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:13,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1035 transitions. [2021-03-11 20:15:13,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.85714285714286) internal successors, (1035), 7 states have internal predecessors, (1035), 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) [2021-03-11 20:15:13,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:13,829 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:13,829 INFO L185 Difference]: Start difference. First operand has 76 places, 57 transitions, 465 flow. Second operand 7 states and 1035 transitions. [2021-03-11 20:15:13,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 63 transitions, 623 flow [2021-03-11 20:15:13,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 63 transitions, 583 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-11 20:15:13,834 INFO L241 Difference]: Finished difference. Result has 78 places, 58 transitions, 495 flow [2021-03-11 20:15:13,834 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=495, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2021-03-11 20:15:13,834 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2021-03-11 20:15:13,835 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 58 transitions, 495 flow [2021-03-11 20:15:13,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 145.875) internal successors, (1167), 8 states have internal predecessors, (1167), 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) [2021-03-11 20:15:13,835 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:13,835 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:13,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 20:15:13,835 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:13,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:13,835 INFO L82 PathProgramCache]: Analyzing trace with hash 49047938, now seen corresponding path program 1 times [2021-03-11 20:15:13,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:13,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356166917] [2021-03-11 20:15:13,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:13,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:13,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:13,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:13,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:13,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:13,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:13,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356166917] [2021-03-11 20:15:13,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:13,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:15:13,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049383357] [2021-03-11 20:15:13,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:15:13,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:13,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:15:13,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:15:13,884 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2021-03-11 20:15:13,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 58 transitions, 495 flow. Second operand has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 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) [2021-03-11 20:15:13,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:13,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2021-03-11 20:15:13,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:14,119 INFO L129 PetriNetUnfolder]: 968/1848 cut-off events. [2021-03-11 20:15:14,120 INFO L130 PetriNetUnfolder]: For 10601/11292 co-relation queries the response was YES. [2021-03-11 20:15:14,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 1848 events. 968/1848 cut-off events. For 10601/11292 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 13364 event pairs, 142 based on Foata normal form. 166/1764 useless extension candidates. Maximal degree in co-relation 7634. Up to 652 conditions per place. [2021-03-11 20:15:14,138 INFO L132 encePairwiseOnDemand]: 196/203 looper letters, 13 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2021-03-11 20:15:14,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 67 transitions, 551 flow [2021-03-11 20:15:14,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:15:14,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:15:14,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 674 transitions. [2021-03-11 20:15:14,140 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8300492610837439 [2021-03-11 20:15:14,140 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 674 transitions. [2021-03-11 20:15:14,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 674 transitions. [2021-03-11 20:15:14,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:14,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 674 transitions. [2021-03-11 20:15:14,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 168.5) internal successors, (674), 4 states have internal predecessors, (674), 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) [2021-03-11 20:15:14,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 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) [2021-03-11 20:15:14,143 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 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) [2021-03-11 20:15:14,143 INFO L185 Difference]: Start difference. First operand has 78 places, 58 transitions, 495 flow. Second operand 4 states and 674 transitions. [2021-03-11 20:15:14,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 67 transitions, 551 flow [2021-03-11 20:15:14,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 505 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-11 20:15:14,157 INFO L241 Difference]: Finished difference. Result has 76 places, 63 transitions, 507 flow [2021-03-11 20:15:14,157 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=507, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2021-03-11 20:15:14,157 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2021-03-11 20:15:14,157 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 507 flow [2021-03-11 20:15:14,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 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) [2021-03-11 20:15:14,158 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:14,158 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:14,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 20:15:14,158 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:14,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:14,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1429443980, now seen corresponding path program 1 times [2021-03-11 20:15:14,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:14,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860185354] [2021-03-11 20:15:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:14,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:14,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 20:15:14,218 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-03-11 20:15:14,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 20:15:14,233 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-03-11 20:15:14,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 20:15:14,252 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-03-11 20:15:14,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 20:15:14,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:14,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 20:15:14,273 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:14,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:14,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860185354] [2021-03-11 20:15:14,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:14,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:15:14,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980804309] [2021-03-11 20:15:14,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:15:14,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:14,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:15:14,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:15:14,280 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 203 [2021-03-11 20:15:14,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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) [2021-03-11 20:15:14,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:14,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 203 [2021-03-11 20:15:14,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:14,588 INFO L129 PetriNetUnfolder]: 968/1967 cut-off events. [2021-03-11 20:15:14,589 INFO L130 PetriNetUnfolder]: For 9370/10798 co-relation queries the response was YES. [2021-03-11 20:15:14,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8342 conditions, 1967 events. 968/1967 cut-off events. For 9370/10798 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 15457 event pairs, 307 based on Foata normal form. 135/1802 useless extension candidates. Maximal degree in co-relation 8307. Up to 1148 conditions per place. [2021-03-11 20:15:14,610 INFO L132 encePairwiseOnDemand]: 197/203 looper letters, 20 selfloop transitions, 22 changer transitions 0/69 dead transitions. [2021-03-11 20:15:14,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 69 transitions, 669 flow [2021-03-11 20:15:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 20:15:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 20:15:14,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1205 transitions. [2021-03-11 20:15:14,612 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7419950738916257 [2021-03-11 20:15:14,612 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1205 transitions. [2021-03-11 20:15:14,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1205 transitions. [2021-03-11 20:15:14,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:14,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1205 transitions. [2021-03-11 20:15:14,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 150.625) internal successors, (1205), 8 states have internal predecessors, (1205), 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) [2021-03-11 20:15:14,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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) [2021-03-11 20:15:14,616 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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) [2021-03-11 20:15:14,616 INFO L185 Difference]: Start difference. First operand has 76 places, 63 transitions, 507 flow. Second operand 8 states and 1205 transitions. [2021-03-11 20:15:14,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 69 transitions, 669 flow [2021-03-11 20:15:14,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 69 transitions, 659 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-03-11 20:15:14,627 INFO L241 Difference]: Finished difference. Result has 85 places, 65 transitions, 602 flow [2021-03-11 20:15:14,628 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=602, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2021-03-11 20:15:14,628 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2021-03-11 20:15:14,628 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 602 flow [2021-03-11 20:15:14,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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) [2021-03-11 20:15:14,628 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:14,628 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:15:14,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 20:15:14,628 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:14,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:14,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2033543238, now seen corresponding path program 1 times [2021-03-11 20:15:14,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:14,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557805342] [2021-03-11 20:15:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:14,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:14,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:14,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:14,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:14,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:14,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:14,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:14,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:14,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557805342] [2021-03-11 20:15:14,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:14,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:15:14,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337026944] [2021-03-11 20:15:14,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:15:14,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:14,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:15:14,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:15:14,676 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2021-03-11 20:15:14,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 602 flow. Second operand has 5 states, 5 states have (on average 164.8) internal successors, (824), 5 states have internal predecessors, (824), 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) [2021-03-11 20:15:14,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:14,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2021-03-11 20:15:14,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:14,878 INFO L129 PetriNetUnfolder]: 711/1511 cut-off events. [2021-03-11 20:15:14,878 INFO L130 PetriNetUnfolder]: For 8761/14396 co-relation queries the response was YES. [2021-03-11 20:15:14,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6447 conditions, 1511 events. 711/1511 cut-off events. For 8761/14396 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 11508 event pairs, 68 based on Foata normal form. 279/1528 useless extension candidates. Maximal degree in co-relation 6408. Up to 994 conditions per place. [2021-03-11 20:15:14,891 INFO L132 encePairwiseOnDemand]: 196/203 looper letters, 14 selfloop transitions, 10 changer transitions 0/74 dead transitions. [2021-03-11 20:15:14,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 74 transitions, 686 flow [2021-03-11 20:15:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:15:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:15:14,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 843 transitions. [2021-03-11 20:15:14,896 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8305418719211822 [2021-03-11 20:15:14,896 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 843 transitions. [2021-03-11 20:15:14,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 843 transitions. [2021-03-11 20:15:14,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:14,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 843 transitions. [2021-03-11 20:15:14,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.6) internal successors, (843), 5 states have internal predecessors, (843), 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) [2021-03-11 20:15:14,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:14,899 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:14,899 INFO L185 Difference]: Start difference. First operand has 85 places, 65 transitions, 602 flow. Second operand 5 states and 843 transitions. [2021-03-11 20:15:14,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 74 transitions, 686 flow [2021-03-11 20:15:14,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 74 transitions, 647 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-11 20:15:14,912 INFO L241 Difference]: Finished difference. Result has 87 places, 70 transitions, 642 flow [2021-03-11 20:15:14,912 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=642, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2021-03-11 20:15:14,912 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2021-03-11 20:15:14,912 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 642 flow [2021-03-11 20:15:14,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 164.8) internal successors, (824), 5 states have internal predecessors, (824), 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) [2021-03-11 20:15:14,913 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:14,913 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] [2021-03-11 20:15:14,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 20:15:14,913 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:14,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:14,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1685658490, now seen corresponding path program 1 times [2021-03-11 20:15:14,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:14,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878790986] [2021-03-11 20:15:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:14,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:14,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:14,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:14,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:14,948 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:14,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:14,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:14,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878790986] [2021-03-11 20:15:14,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:14,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:15:14,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152239483] [2021-03-11 20:15:14,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:15:14,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:14,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:15:14,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:15:14,955 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 203 [2021-03-11 20:15:14,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 642 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2021-03-11 20:15:14,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:14,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 203 [2021-03-11 20:15:14,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:15,165 INFO L129 PetriNetUnfolder]: 947/2084 cut-off events. [2021-03-11 20:15:15,165 INFO L130 PetriNetUnfolder]: For 11531/15225 co-relation queries the response was YES. [2021-03-11 20:15:15,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9467 conditions, 2084 events. 947/2084 cut-off events. For 11531/15225 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 17408 event pairs, 168 based on Foata normal form. 86/1793 useless extension candidates. Maximal degree in co-relation 9426. Up to 1458 conditions per place. [2021-03-11 20:15:15,186 INFO L132 encePairwiseOnDemand]: 199/203 looper letters, 6 selfloop transitions, 5 changer transitions 1/74 dead transitions. [2021-03-11 20:15:15,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 74 transitions, 728 flow [2021-03-11 20:15:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:15:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:15:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 866 transitions. [2021-03-11 20:15:15,188 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8532019704433498 [2021-03-11 20:15:15,188 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 866 transitions. [2021-03-11 20:15:15,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 866 transitions. [2021-03-11 20:15:15,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:15,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 866 transitions. [2021-03-11 20:15:15,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 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) [2021-03-11 20:15:15,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:15,191 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:15,191 INFO L185 Difference]: Start difference. First operand has 87 places, 70 transitions, 642 flow. Second operand 5 states and 866 transitions. [2021-03-11 20:15:15,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 74 transitions, 728 flow [2021-03-11 20:15:15,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 74 transitions, 705 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-03-11 20:15:15,204 INFO L241 Difference]: Finished difference. Result has 92 places, 72 transitions, 672 flow [2021-03-11 20:15:15,205 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=672, PETRI_PLACES=92, PETRI_TRANSITIONS=72} [2021-03-11 20:15:15,205 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2021-03-11 20:15:15,205 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 72 transitions, 672 flow [2021-03-11 20:15:15,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 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) [2021-03-11 20:15:15,205 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:15,206 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] [2021-03-11 20:15:15,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 20:15:15,206 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash -325659415, now seen corresponding path program 1 times [2021-03-11 20:15:15,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:15,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598103751] [2021-03-11 20:15:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:15,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:15,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:15,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:15,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:15,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:15,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598103751] [2021-03-11 20:15:15,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:15,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:15:15,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721669788] [2021-03-11 20:15:15,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:15:15,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:15,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:15:15,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:15:15,264 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2021-03-11 20:15:15,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 72 transitions, 672 flow. Second operand has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 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) [2021-03-11 20:15:15,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:15,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2021-03-11 20:15:15,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:15,437 INFO L129 PetriNetUnfolder]: 742/1527 cut-off events. [2021-03-11 20:15:15,437 INFO L130 PetriNetUnfolder]: For 7876/16224 co-relation queries the response was YES. [2021-03-11 20:15:15,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6844 conditions, 1527 events. 742/1527 cut-off events. For 7876/16224 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 11393 event pairs, 11 based on Foata normal form. 344/1537 useless extension candidates. Maximal degree in co-relation 6801. Up to 1178 conditions per place. [2021-03-11 20:15:15,449 INFO L132 encePairwiseOnDemand]: 196/203 looper letters, 13 selfloop transitions, 14 changer transitions 4/68 dead transitions. [2021-03-11 20:15:15,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 68 transitions, 628 flow [2021-03-11 20:15:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:15:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:15:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1012 transitions. [2021-03-11 20:15:15,453 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8308702791461412 [2021-03-11 20:15:15,453 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1012 transitions. [2021-03-11 20:15:15,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1012 transitions. [2021-03-11 20:15:15,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:15,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1012 transitions. [2021-03-11 20:15:15,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 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) [2021-03-11 20:15:15,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2021-03-11 20:15:15,459 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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) [2021-03-11 20:15:15,459 INFO L185 Difference]: Start difference. First operand has 92 places, 72 transitions, 672 flow. Second operand 6 states and 1012 transitions. [2021-03-11 20:15:15,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 68 transitions, 628 flow [2021-03-11 20:15:15,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 68 transitions, 606 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-11 20:15:15,467 INFO L241 Difference]: Finished difference. Result has 94 places, 60 transitions, 531 flow [2021-03-11 20:15:15,467 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=531, PETRI_PLACES=94, PETRI_TRANSITIONS=60} [2021-03-11 20:15:15,467 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2021-03-11 20:15:15,467 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 60 transitions, 531 flow [2021-03-11 20:15:15,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 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) [2021-03-11 20:15:15,468 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:15,468 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] [2021-03-11 20:15:15,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 20:15:15,468 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:15,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:15,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1642507867, now seen corresponding path program 1 times [2021-03-11 20:15:15,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:15,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970321297] [2021-03-11 20:15:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:15,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:15,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:15,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:15,504 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 20:15:15,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:15:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:15,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970321297] [2021-03-11 20:15:15,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:15,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:15:15,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930839118] [2021-03-11 20:15:15,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:15:15,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:15,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:15:15,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:15:15,510 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 203 [2021-03-11 20:15:15,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 60 transitions, 531 flow. Second operand has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 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) [2021-03-11 20:15:15,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:15,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 203 [2021-03-11 20:15:15,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:15,752 INFO L129 PetriNetUnfolder]: 1379/2790 cut-off events. [2021-03-11 20:15:15,752 INFO L130 PetriNetUnfolder]: For 15012/20481 co-relation queries the response was YES. [2021-03-11 20:15:15,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13384 conditions, 2790 events. 1379/2790 cut-off events. For 15012/20481 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 23955 event pairs, 36 based on Foata normal form. 93/2243 useless extension candidates. Maximal degree in co-relation 13340. Up to 2225 conditions per place. [2021-03-11 20:15:15,770 INFO L132 encePairwiseOnDemand]: 199/203 looper letters, 6 selfloop transitions, 2 changer transitions 3/64 dead transitions. [2021-03-11 20:15:15,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 64 transitions, 613 flow [2021-03-11 20:15:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:15:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:15:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 850 transitions. [2021-03-11 20:15:15,772 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8374384236453202 [2021-03-11 20:15:15,772 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 850 transitions. [2021-03-11 20:15:15,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 850 transitions. [2021-03-11 20:15:15,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:15,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 850 transitions. [2021-03-11 20:15:15,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 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) [2021-03-11 20:15:15,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:15,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2021-03-11 20:15:15,774 INFO L185 Difference]: Start difference. First operand has 94 places, 60 transitions, 531 flow. Second operand 5 states and 850 transitions. [2021-03-11 20:15:15,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 64 transitions, 613 flow [2021-03-11 20:15:15,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 64 transitions, 566 flow, removed 16 selfloop flow, removed 7 redundant places. [2021-03-11 20:15:15,801 INFO L241 Difference]: Finished difference. Result has 90 places, 59 transitions, 480 flow [2021-03-11 20:15:15,801 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=90, PETRI_TRANSITIONS=59} [2021-03-11 20:15:15,801 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2021-03-11 20:15:15,801 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 59 transitions, 480 flow [2021-03-11 20:15:15,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 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) [2021-03-11 20:15:15,801 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:15,802 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] [2021-03-11 20:15:15,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 20:15:15,802 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:15,802 INFO L82 PathProgramCache]: Analyzing trace with hash 2137550357, now seen corresponding path program 2 times [2021-03-11 20:15:15,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:15,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071286844] [2021-03-11 20:15:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:15:15,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:15,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:15,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:15,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:15,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:15:15,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:15:15,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:15:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:15:15,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071286844] [2021-03-11 20:15:15,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:15:15,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 20:15:15,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152732319] [2021-03-11 20:15:15,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:15:15,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:15:15,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:15:15,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:15:15,858 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 203 [2021-03-11 20:15:15,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 59 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 164.85714285714286) internal successors, (1154), 7 states have internal predecessors, (1154), 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) [2021-03-11 20:15:15,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:15:15,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 203 [2021-03-11 20:15:15,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:15:16,161 INFO L129 PetriNetUnfolder]: 1321/2609 cut-off events. [2021-03-11 20:15:16,161 INFO L130 PetriNetUnfolder]: For 11539/26998 co-relation queries the response was YES. [2021-03-11 20:15:16,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12021 conditions, 2609 events. 1321/2609 cut-off events. For 11539/26998 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 21868 event pairs, 0 based on Foata normal form. 496/2476 useless extension candidates. Maximal degree in co-relation 11984. Up to 1369 conditions per place. [2021-03-11 20:15:16,178 INFO L132 encePairwiseOnDemand]: 196/203 looper letters, 5 selfloop transitions, 18 changer transitions 13/60 dead transitions. [2021-03-11 20:15:16,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 60 transitions, 534 flow [2021-03-11 20:15:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:15:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:15:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1173 transitions. [2021-03-11 20:15:16,179 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8254750175932442 [2021-03-11 20:15:16,179 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1173 transitions. [2021-03-11 20:15:16,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1173 transitions. [2021-03-11 20:15:16,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:15:16,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1173 transitions. [2021-03-11 20:15:16,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 167.57142857142858) internal successors, (1173), 7 states have internal predecessors, (1173), 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) [2021-03-11 20:15:16,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:16,182 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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) [2021-03-11 20:15:16,182 INFO L185 Difference]: Start difference. First operand has 90 places, 59 transitions, 480 flow. Second operand 7 states and 1173 transitions. [2021-03-11 20:15:16,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 60 transitions, 534 flow [2021-03-11 20:15:16,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 60 transitions, 474 flow, removed 19 selfloop flow, removed 9 redundant places. [2021-03-11 20:15:16,211 INFO L241 Difference]: Finished difference. Result has 88 places, 47 transitions, 376 flow [2021-03-11 20:15:16,211 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=88, PETRI_TRANSITIONS=47} [2021-03-11 20:15:16,211 INFO L335 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2021-03-11 20:15:16,211 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 47 transitions, 376 flow [2021-03-11 20:15:16,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 164.85714285714286) internal successors, (1154), 7 states have internal predecessors, (1154), 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) [2021-03-11 20:15:16,211 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:15:16,212 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] [2021-03-11 20:15:16,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 20:15:16,212 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:15:16,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:15:16,212 INFO L82 PathProgramCache]: Analyzing trace with hash -543675236, now seen corresponding path program 1 times [2021-03-11 20:15:16,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:15:16,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060634980] [2021-03-11 20:15:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:15:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:15:16,232 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:15:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:15:16,251 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:15:16,270 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 20:15:16,270 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 20:15:16,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 20:15:16,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:15:16 BasicIcfg [2021-03-11 20:15:16,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:15:16,332 INFO L168 Benchmark]: Toolchain (without parser) took 15736.97 ms. Allocated memory was 255.9 MB in the beginning and 648.0 MB in the end (delta: 392.2 MB). Free memory was 233.4 MB in the beginning and 260.5 MB in the end (delta: -27.0 MB). Peak memory consumption was 365.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:16,332 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:15:16,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.67 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 232.8 MB in the beginning and 327.0 MB in the end (delta: -94.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:16,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.35 ms. Allocated memory is still 367.0 MB. Free memory was 327.0 MB in the beginning and 324.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:16,332 INFO L168 Benchmark]: Boogie Preprocessor took 43.67 ms. Allocated memory is still 367.0 MB. Free memory was 324.1 MB in the beginning and 322.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:16,332 INFO L168 Benchmark]: RCFGBuilder took 1567.01 ms. Allocated memory is still 367.0 MB. Free memory was 322.0 MB in the beginning and 247.8 MB in the end (delta: 74.3 MB). Peak memory consumption was 76.0 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:16,332 INFO L168 Benchmark]: TraceAbstraction took 13639.64 ms. Allocated memory was 367.0 MB in the beginning and 648.0 MB in the end (delta: 281.0 MB). Free memory was 246.8 MB in the beginning and 260.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 267.3 MB. Max. memory is 16.0 GB. [2021-03-11 20:15:16,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 415.67 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 232.8 MB in the beginning and 327.0 MB in the end (delta: -94.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 63.35 ms. Allocated memory is still 367.0 MB. Free memory was 327.0 MB in the beginning and 324.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 43.67 ms. Allocated memory is still 367.0 MB. Free memory was 324.1 MB in the beginning and 322.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1567.01 ms. Allocated memory is still 367.0 MB. Free memory was 322.0 MB in the beginning and 247.8 MB in the end (delta: 74.3 MB). Peak memory consumption was 76.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 13639.64 ms. Allocated memory was 367.0 MB in the beginning and 648.0 MB in the end (delta: 281.0 MB). Free memory was 246.8 MB in the beginning and 260.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 267.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8249.3ms, 119 PlacesBefore, 41 PlacesAfterwards, 108 TransitionsBefore, 29 TransitionsAfterwards, 2406 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 TotalNumberOfCompositions, 6239 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2995, positive: 2814, positive conditional: 0, positive unconditional: 2814, negative: 181, negative conditional: 0, negative unconditional: 181, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1620, positive: 1574, positive conditional: 0, positive unconditional: 1574, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1620, positive: 1553, positive conditional: 0, positive unconditional: 1553, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 67, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 828, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 777, negative conditional: 0, negative unconditional: 777, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2995, positive: 1240, positive conditional: 0, positive unconditional: 1240, negative: 135, negative conditional: 0, negative unconditional: 135, unknown: 1620, unknown conditional: 0, unknown unconditional: 1620] , Statistics on independence cache: Total cache size (in pairs): 184, Positive cache size: 163, Positive conditional cache size: 0, Positive unconditional cache size: 163, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p3_EAX = 0; [L714] 0 int a = 0; [L715] 0 _Bool main$tmp_guard0; [L716] 0 _Bool main$tmp_guard1; [L718] 0 int x = 0; [L720] 0 int y = 0; [L722] 0 int z = 0; [L723] 0 _Bool z$flush_delayed; [L724] 0 int z$mem_tmp; [L725] 0 _Bool z$r_buff0_thd0; [L726] 0 _Bool z$r_buff0_thd1; [L727] 0 _Bool z$r_buff0_thd2; [L728] 0 _Bool z$r_buff0_thd3; [L729] 0 _Bool z$r_buff0_thd4; [L730] 0 _Bool z$r_buff1_thd0; [L731] 0 _Bool z$r_buff1_thd1; [L732] 0 _Bool z$r_buff1_thd2; [L733] 0 _Bool z$r_buff1_thd3; [L734] 0 _Bool z$r_buff1_thd4; [L735] 0 _Bool z$read_delayed; [L736] 0 int *z$read_delayed_var; [L737] 0 int z$w_buff0; [L738] 0 _Bool z$w_buff0_used; [L739] 0 int z$w_buff1; [L740] 0 _Bool z$w_buff1_used; [L741] 0 _Bool weak$$choice0; [L742] 0 _Bool weak$$choice2; [L834] 0 pthread_t t1533; [L835] FCALL, FORK 0 pthread_create(&t1533, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L836] 0 pthread_t t1534; [L837] FCALL, FORK 0 pthread_create(&t1534, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L838] 0 pthread_t t1535; [L839] FCALL, FORK 0 pthread_create(&t1535, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L840] 0 pthread_t t1536; [L841] FCALL, FORK 0 pthread_create(&t1536, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L796] 4 z$w_buff1 = z$w_buff0 [L797] 4 z$w_buff0 = 2 [L798] 4 z$w_buff1_used = z$w_buff0_used [L799] 4 z$w_buff0_used = (_Bool)1 [L18] COND FALSE 4 !(!expression) [L801] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L802] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L803] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L804] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L805] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L806] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L809] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L746] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L749] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L761] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L764] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L776] 3 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L779] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L812] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L812] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L813] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L813] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L814] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L814] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L815] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L815] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L816] EXPR 4 z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L816] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 [L754] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L756] 1 return 0; [L769] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L771] 2 return 0; [L782] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L782] EXPR 3 z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z [L782] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L782] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L783] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L783] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L784] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L784] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L785] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L785] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L786] EXPR 3 z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L786] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 [L789] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L791] 3 return 0; [L819] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L821] 4 return 0; [L843] 0 main$tmp_guard0 = __unbuffered_cnt == 4 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z=2, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L3] COND FALSE 0 !(!cond) [L847] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L847] EXPR 0 z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z [L847] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L847] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L848] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L848] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L849] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L849] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L850] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L850] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L851] EXPR 0 z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L851] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 [L854] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L855] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L856] 0 z$flush_delayed = weak$$choice2 [L857] 0 z$mem_tmp = z [L858] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L858] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L859] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L859] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0) [L859] EXPR 0 weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L859] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L860] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L860] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1) [L860] EXPR 0 weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L860] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L861] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L861] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used) [L861] EXPR 0 weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L861] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L862] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L862] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L862] EXPR 0 weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L862] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L863] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L863] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0) [L863] EXPR 0 weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L863] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L864] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L864] EXPR 0 !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L864] EXPR 0 weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L864] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L865] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2 && __unbuffered_p3_EAX == 0) [L866] EXPR 0 z$flush_delayed ? z$mem_tmp : z [L866] 0 z = z$flush_delayed ? z$mem_tmp : z [L867] 0 z$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=0, x=2, y=2, z=2, z$flush_delayed=0, z$mem_tmp=2, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 111 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 13487.2ms, OverallIterations: 21, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3371.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8319.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 102 SDtfs, 63 SDslu, 117 SDs, 0 SdLazy, 574 SolverSat, 183 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 603.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 614.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=672occurred in iteration=17, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 45.1ms SsaConstructionTime, 371.9ms SatisfiabilityAnalysisTime, 1146.9ms InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 311 ConstructedInterpolants, 0 QuantifiedInterpolants, 2161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...