/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:31:35,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:31:35,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:31:35,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 02:31:35,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:31:35,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:31:35,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:31:35,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:31:35,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:31:35,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:31:35,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:31:35,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:31:35,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:31:35,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:31:35,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:31:35,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:31:35,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:31:35,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:31:35,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:31:35,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:31:35,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:31:35,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:31:35,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:31:35,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:31:35,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:31:35,236 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:31:35,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:31:35,236 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:31:35,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:31:35,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:31:35,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:31:35,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:31:35,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:31:35,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:31:35,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:31:35,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:31:35,237 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:31:35,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:31:35,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:31:35,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:31:35,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:31:35,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:31:35,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:31:35,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:31:35,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:31:35,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:31:35,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:31:35,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:31:35,238 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:31:35,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:31:35,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:31:35,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:31:35,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:31:35,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:31:35,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:31:35,497 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:31:35,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.opt.i [2021-03-11 02:31:35,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa233d08e/2146dbb6f8234a1fbc39f071ada3522b/FLAG765475326 [2021-03-11 02:31:35,999 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:31:36,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.opt.i [2021-03-11 02:31:36,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa233d08e/2146dbb6f8234a1fbc39f071ada3522b/FLAG765475326 [2021-03-11 02:31:36,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa233d08e/2146dbb6f8234a1fbc39f071ada3522b [2021-03-11 02:31:36,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:31:36,539 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:31:36,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:31:36,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:31:36,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:31:36,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:31:36" (1/1) ... [2021-03-11 02:31:36,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6ca871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36, skipping insertion in model container [2021-03-11 02:31:36,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:31:36" (1/1) ... [2021-03-11 02:31:36,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:31:36,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:31:36,680 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/safe007_pso.opt.i[949,962] [2021-03-11 02:31:36,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:31:36,819 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:31:36,829 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/safe007_pso.opt.i[949,962] [2021-03-11 02:31:36,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:31:36,905 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:31:36,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36 WrapperNode [2021-03-11 02:31:36,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:31:36,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:31:36,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:31:36,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:31:36,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36" (1/1) ... [2021-03-11 02:31:36,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36" (1/1) ... [2021-03-11 02:31:36,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:31:36,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:31:36,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:31:36,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:31:36,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36" (1/1) ... [2021-03-11 02:31:36,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36" (1/1) ... [2021-03-11 02:31:36,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36" (1/1) ... [2021-03-11 02:31:36,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36" (1/1) ... [2021-03-11 02:31:36,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36" (1/1) ... [2021-03-11 02:31:36,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36" (1/1) ... [2021-03-11 02:31:36,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36" (1/1) ... [2021-03-11 02:31:36,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:31:36,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:31:36,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:31:36,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:31:36,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36" (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 02:31:37,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:31:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:31:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:31:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:31:37,030 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:31:37,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:31:37,031 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:31:37,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:31:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:31:37,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:31:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:31:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:31:37,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:31:37,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:31:37,033 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 02:31:37,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:31:37,385 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:31:37,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:31:37 BoogieIcfgContainer [2021-03-11 02:31:37,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:31:37,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:31:37,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:31:37,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:31:37,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:31:36" (1/3) ... [2021-03-11 02:31:37,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e708906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:31:37, skipping insertion in model container [2021-03-11 02:31:37,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:36" (2/3) ... [2021-03-11 02:31:37,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e708906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:31:37, skipping insertion in model container [2021-03-11 02:31:37,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:31:37" (3/3) ... [2021-03-11 02:31:37,393 INFO L111 eAbstractionObserver]: Analyzing ICFG safe007_pso.opt.i [2021-03-11 02:31:37,397 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:31:37,400 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:31:37,401 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:31:37,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,429 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,429 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,429 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,429 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,430 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,430 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,430 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,430 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,431 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,431 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,432 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,432 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,433 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,434 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,434 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,435 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,436 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,436 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,436 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,436 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,437 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,438 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,438 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,438 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,438 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,444 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,444 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,445 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,446 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:37,447 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:31:37,459 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:31:37,473 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:31:37,473 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:31:37,473 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:31:37,473 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:31:37,474 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:31:37,474 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:31:37,474 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:31:37,474 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:31:37,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-03-11 02:31:37,503 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-03-11 02:31:37,503 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:31:37,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 02:31:37,506 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-03-11 02:31:37,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-03-11 02:31:37,526 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-11 02:31:37,527 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:31:37,527 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:37,527 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:37,528 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:37,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:37,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1296421566, now seen corresponding path program 1 times [2021-03-11 02:31:37,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:37,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368910658] [2021-03-11 02:31:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:37,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:37,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:37,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:37,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:37,777 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:31:37,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:31:37,790 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:37,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:37,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:37,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:37,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:37,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:37,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:37,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:37,838 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 02:31:37,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368910658] [2021-03-11 02:31:37,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:37,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:31:37,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309604141] [2021-03-11 02:31:37,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:31:37,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:37,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:31:37,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:31:37,856 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 76 [2021-03-11 02:31:37,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 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 02:31:37,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:37,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 76 [2021-03-11 02:31:37,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:38,058 INFO L129 PetriNetUnfolder]: 69/227 cut-off events. [2021-03-11 02:31:38,058 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:31:38,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 227 events. 69/227 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 945 event pairs, 22 based on Foata normal form. 10/228 useless extension candidates. Maximal degree in co-relation 338. Up to 49 conditions per place. [2021-03-11 02:31:38,060 INFO L132 encePairwiseOnDemand]: 69/76 looper letters, 12 selfloop transitions, 2 changer transitions 22/84 dead transitions. [2021-03-11 02:31:38,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 84 transitions, 249 flow [2021-03-11 02:31:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:31:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:31:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 580 transitions. [2021-03-11 02:31:38,071 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.847953216374269 [2021-03-11 02:31:38,072 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 580 transitions. [2021-03-11 02:31:38,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 580 transitions. [2021-03-11 02:31:38,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:38,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 580 transitions. [2021-03-11 02:31:38,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.44444444444444) internal successors, (580), 9 states have internal predecessors, (580), 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 02:31:38,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 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 02:31:38,083 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 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 02:31:38,085 INFO L185 Difference]: Start difference. First operand has 70 places, 61 transitions, 131 flow. Second operand 9 states and 580 transitions. [2021-03-11 02:31:38,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 84 transitions, 249 flow [2021-03-11 02:31:38,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:31:38,090 INFO L241 Difference]: Finished difference. Result has 82 places, 60 transitions, 146 flow [2021-03-11 02:31:38,091 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=146, PETRI_PLACES=82, PETRI_TRANSITIONS=60} [2021-03-11 02:31:38,091 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2021-03-11 02:31:38,092 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 60 transitions, 146 flow [2021-03-11 02:31:38,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 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 02:31:38,092 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:38,092 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:38,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:31:38,092 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:38,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash 417553791, now seen corresponding path program 1 times [2021-03-11 02:31:38,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:38,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137995110] [2021-03-11 02:31:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:38,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:38,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:38,154 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:31:38,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:31:38,177 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:38,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:38,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:38,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:38,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:38,246 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 02:31:38,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137995110] [2021-03-11 02:31:38,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:38,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:31:38,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81978473] [2021-03-11 02:31:38,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:31:38,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:38,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:31:38,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:31:38,249 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 76 [2021-03-11 02:31:38,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 60 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 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 02:31:38,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:38,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 76 [2021-03-11 02:31:38,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:38,494 INFO L129 PetriNetUnfolder]: 24/150 cut-off events. [2021-03-11 02:31:38,495 INFO L130 PetriNetUnfolder]: For 37/49 co-relation queries the response was YES. [2021-03-11 02:31:38,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 150 events. 24/150 cut-off events. For 37/49 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 465 event pairs, 1 based on Foata normal form. 4/147 useless extension candidates. Maximal degree in co-relation 246. Up to 24 conditions per place. [2021-03-11 02:31:38,496 INFO L132 encePairwiseOnDemand]: 69/76 looper letters, 11 selfloop transitions, 3 changer transitions 16/78 dead transitions. [2021-03-11 02:31:38,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 78 transitions, 263 flow [2021-03-11 02:31:38,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:31:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:31:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 632 transitions. [2021-03-11 02:31:38,503 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-03-11 02:31:38,503 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 632 transitions. [2021-03-11 02:31:38,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 632 transitions. [2021-03-11 02:31:38,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:38,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 632 transitions. [2021-03-11 02:31:38,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.2) internal successors, (632), 10 states have internal predecessors, (632), 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 02:31:38,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 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 02:31:38,506 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 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 02:31:38,506 INFO L185 Difference]: Start difference. First operand has 82 places, 60 transitions, 146 flow. Second operand 10 states and 632 transitions. [2021-03-11 02:31:38,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 78 transitions, 263 flow [2021-03-11 02:31:38,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 78 transitions, 229 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-03-11 02:31:38,508 INFO L241 Difference]: Finished difference. Result has 84 places, 60 transitions, 152 flow [2021-03-11 02:31:38,509 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=152, PETRI_PLACES=84, PETRI_TRANSITIONS=60} [2021-03-11 02:31:38,509 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2021-03-11 02:31:38,509 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 60 transitions, 152 flow [2021-03-11 02:31:38,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 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 02:31:38,510 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:38,510 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:38,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:31:38,510 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:38,510 INFO L82 PathProgramCache]: Analyzing trace with hash -929171362, now seen corresponding path program 1 times [2021-03-11 02:31:38,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:38,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906253001] [2021-03-11 02:31:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:38,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:38,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:38,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:38,571 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:31:38,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:31:38,587 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:38,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:38,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:38,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:38,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:38,651 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 02:31:38,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906253001] [2021-03-11 02:31:38,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:38,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:31:38,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140229330] [2021-03-11 02:31:38,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:31:38,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:38,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:31:38,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:31:38,654 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-03-11 02:31:38,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 60 transitions, 152 flow. Second operand has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 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 02:31:38,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:38,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-03-11 02:31:38,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:38,831 INFO L129 PetriNetUnfolder]: 29/153 cut-off events. [2021-03-11 02:31:38,831 INFO L130 PetriNetUnfolder]: For 44/88 co-relation queries the response was YES. [2021-03-11 02:31:38,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 153 events. 29/153 cut-off events. For 44/88 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 505 event pairs, 5 based on Foata normal form. 4/151 useless extension candidates. Maximal degree in co-relation 276. Up to 20 conditions per place. [2021-03-11 02:31:38,840 INFO L132 encePairwiseOnDemand]: 68/76 looper letters, 12 selfloop transitions, 4 changer transitions 18/80 dead transitions. [2021-03-11 02:31:38,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 285 flow [2021-03-11 02:31:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:31:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:31:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 616 transitions. [2021-03-11 02:31:38,842 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8105263157894737 [2021-03-11 02:31:38,842 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 616 transitions. [2021-03-11 02:31:38,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 616 transitions. [2021-03-11 02:31:38,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:38,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 616 transitions. [2021-03-11 02:31:38,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.6) internal successors, (616), 10 states have internal predecessors, (616), 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 02:31:38,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 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 02:31:38,846 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 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 02:31:38,846 INFO L185 Difference]: Start difference. First operand has 84 places, 60 transitions, 152 flow. Second operand 10 states and 616 transitions. [2021-03-11 02:31:38,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 285 flow [2021-03-11 02:31:38,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 251 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-03-11 02:31:38,850 INFO L241 Difference]: Finished difference. Result has 86 places, 60 transitions, 164 flow [2021-03-11 02:31:38,850 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=164, PETRI_PLACES=86, PETRI_TRANSITIONS=60} [2021-03-11 02:31:38,851 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2021-03-11 02:31:38,851 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 60 transitions, 164 flow [2021-03-11 02:31:38,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 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 02:31:38,851 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:38,851 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:38,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:31:38,851 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:38,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:38,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1957553368, now seen corresponding path program 1 times [2021-03-11 02:31:38,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:38,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930474900] [2021-03-11 02:31:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:38,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:38,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:38,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:38,956 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:31:38,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:31:38,964 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:38,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:38,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:38,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:38,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:38,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:38,999 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 02:31:38,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930474900] [2021-03-11 02:31:38,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:38,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:31:39,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602913062] [2021-03-11 02:31:39,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:31:39,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:39,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:31:39,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:31:39,001 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-03-11 02:31:39,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 60 transitions, 164 flow. Second operand has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 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 02:31:39,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:39,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-03-11 02:31:39,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:39,126 INFO L129 PetriNetUnfolder]: 11/103 cut-off events. [2021-03-11 02:31:39,126 INFO L130 PetriNetUnfolder]: For 58/68 co-relation queries the response was YES. [2021-03-11 02:31:39,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 103 events. 11/103 cut-off events. For 58/68 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 258 event pairs, 2 based on Foata normal form. 5/106 useless extension candidates. Maximal degree in co-relation 203. Up to 10 conditions per place. [2021-03-11 02:31:39,127 INFO L132 encePairwiseOnDemand]: 67/76 looper letters, 9 selfloop transitions, 5 changer transitions 18/77 dead transitions. [2021-03-11 02:31:39,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 301 flow [2021-03-11 02:31:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:31:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:31:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 671 transitions. [2021-03-11 02:31:39,129 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8026315789473685 [2021-03-11 02:31:39,129 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 671 transitions. [2021-03-11 02:31:39,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 671 transitions. [2021-03-11 02:31:39,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:39,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 671 transitions. [2021-03-11 02:31:39,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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 02:31:39,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 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 02:31:39,132 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 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 02:31:39,132 INFO L185 Difference]: Start difference. First operand has 86 places, 60 transitions, 164 flow. Second operand 11 states and 671 transitions. [2021-03-11 02:31:39,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 301 flow [2021-03-11 02:31:39,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 238 flow, removed 23 selfloop flow, removed 11 redundant places. [2021-03-11 02:31:39,135 INFO L241 Difference]: Finished difference. Result has 87 places, 59 transitions, 164 flow [2021-03-11 02:31:39,135 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=164, PETRI_PLACES=87, PETRI_TRANSITIONS=59} [2021-03-11 02:31:39,137 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 17 predicate places. [2021-03-11 02:31:39,137 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 59 transitions, 164 flow [2021-03-11 02:31:39,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 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 02:31:39,137 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:39,137 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:31:39,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:31:39,138 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash 535580645, now seen corresponding path program 1 times [2021-03-11 02:31:39,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:39,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284193001] [2021-03-11 02:31:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:39,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:39,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:39,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:39,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:39,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:39,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:39,207 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:31:39,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:31:39,218 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:39,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:39,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:39,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:39,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:39,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:39,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:39,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:39,251 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 02:31:39,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284193001] [2021-03-11 02:31:39,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:39,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:31:39,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615282266] [2021-03-11 02:31:39,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:31:39,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:39,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:31:39,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:31:39,254 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-03-11 02:31:39,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 59 transitions, 164 flow. Second operand has 8 states, 8 states have (on average 59.625) internal successors, (477), 8 states have internal predecessors, (477), 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 02:31:39,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:39,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-03-11 02:31:39,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:39,352 INFO L129 PetriNetUnfolder]: 4/65 cut-off events. [2021-03-11 02:31:39,352 INFO L130 PetriNetUnfolder]: For 23/24 co-relation queries the response was YES. [2021-03-11 02:31:39,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 65 events. 4/65 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 2/67 useless extension candidates. Maximal degree in co-relation 117. Up to 5 conditions per place. [2021-03-11 02:31:39,354 INFO L132 encePairwiseOnDemand]: 68/76 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2021-03-11 02:31:39,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 64 transitions, 224 flow [2021-03-11 02:31:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:31:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:31:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 660 transitions. [2021-03-11 02:31:39,356 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2021-03-11 02:31:39,356 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 660 transitions. [2021-03-11 02:31:39,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 660 transitions. [2021-03-11 02:31:39,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:39,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 660 transitions. [2021-03-11 02:31:39,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 60.0) internal successors, (660), 11 states have internal predecessors, (660), 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 02:31:39,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 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 02:31:39,359 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 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 02:31:39,359 INFO L185 Difference]: Start difference. First operand has 87 places, 59 transitions, 164 flow. Second operand 11 states and 660 transitions. [2021-03-11 02:31:39,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 64 transitions, 224 flow [2021-03-11 02:31:39,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 188 flow, removed 12 selfloop flow, removed 9 redundant places. [2021-03-11 02:31:39,361 INFO L241 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2021-03-11 02:31:39,362 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2021-03-11 02:31:39,362 INFO L335 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2021-03-11 02:31:39,362 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2021-03-11 02:31:39,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 59.625) internal successors, (477), 8 states have internal predecessors, (477), 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 02:31:39,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:31:39,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:31:39 BasicIcfg [2021-03-11 02:31:39,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:31:39,367 INFO L168 Benchmark]: Toolchain (without parser) took 2830.30 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 234.8 MB in the beginning and 249.1 MB in the end (delta: -14.3 MB). Peak memory consumption was 82.7 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:39,367 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.1 MB in the end (delta: 104.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:31:39,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.73 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 234.4 MB in the beginning and 317.6 MB in the end (delta: -83.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:39,370 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.35 ms. Allocated memory is still 354.4 MB. Free memory was 317.6 MB in the beginning and 315.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:39,370 INFO L168 Benchmark]: Boogie Preprocessor took 28.76 ms. Allocated memory is still 354.4 MB. Free memory was 315.6 MB in the beginning and 314.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:31:39,371 INFO L168 Benchmark]: RCFGBuilder took 405.39 ms. Allocated memory is still 354.4 MB. Free memory was 314.0 MB in the beginning and 291.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:39,372 INFO L168 Benchmark]: TraceAbstraction took 1977.04 ms. Allocated memory is still 354.4 MB. Free memory was 291.5 MB in the beginning and 249.1 MB in the end (delta: 42.4 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:39,376 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 was 238.2 MB in the beginning and 238.1 MB in the end (delta: 104.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 364.73 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 234.4 MB in the beginning and 317.6 MB in the end (delta: -83.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.35 ms. Allocated memory is still 354.4 MB. Free memory was 317.6 MB in the beginning and 315.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.76 ms. Allocated memory is still 354.4 MB. Free memory was 315.6 MB in the beginning and 314.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 405.39 ms. Allocated memory is still 354.4 MB. Free memory was 314.0 MB in the beginning and 291.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1977.04 ms. Allocated memory is still 354.4 MB. Free memory was 291.5 MB in the beginning and 249.1 MB in the end (delta: 42.4 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 18.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1892.3ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 945.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 81 SDtfs, 160 SDslu, 248 SDs, 0 SdLazy, 150 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 147.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 751.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=3, InterpolantAutomatonStates: 51, 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: 22.4ms SsaConstructionTime, 97.9ms SatisfiabilityAnalysisTime, 665.9ms InterpolantComputationTime, 224 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 219 ConstructedInterpolants, 0 QuantifiedInterpolants, 997 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...