/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:36:06,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:36:06,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:36:06,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:36:06,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:36:06,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:36:06,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:36:06,492 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-FA-NoLbe.epf [2021-03-10 17:36:06,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:36:06,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:36:06,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:36:06,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:36:06,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:36:06,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:36:06,508 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:36:06,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:36:06,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:36:06,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:36:06,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:36:06,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:36:06,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:36:06,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:36:06,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:36:06,509 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:36:06,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:36:06,509 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:36:06,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:36:06,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:36:06,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:36:06,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:36:06,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:36:06,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:36:06,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:36:06,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:36:06,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:36:06,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:36:06,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:36:06,510 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:36:06,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:36:06,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:36:06,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:36:06,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:36:06,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:36:06,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:36:06,777 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:36:06,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2021-03-10 17:36:06,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffb893549/7d0f7ff4f993428299ad8f5f508ed3b4/FLAGc351e4e33 [2021-03-10 17:36:07,269 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:36:07,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.oepc.i [2021-03-10 17:36:07,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffb893549/7d0f7ff4f993428299ad8f5f508ed3b4/FLAGc351e4e33 [2021-03-10 17:36:07,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffb893549/7d0f7ff4f993428299ad8f5f508ed3b4 [2021-03-10 17:36:07,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:36:07,603 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:36:07,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:36:07,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:36:07,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:36:07,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:36:07" (1/1) ... [2021-03-10 17:36:07,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd0c7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07, skipping insertion in model container [2021-03-10 17:36:07,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:36:07" (1/1) ... [2021-03-10 17:36:07,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:36:07,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:36:07,719 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/safe034_tso.oepc.i[950,963] [2021-03-10 17:36:07,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:36:07,838 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:36:07,875 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/safe034_tso.oepc.i[950,963] [2021-03-10 17:36:07,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:36:07,947 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:36:07,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07 WrapperNode [2021-03-10 17:36:07,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:36:07,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:36:07,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:36:07,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:36:07,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07" (1/1) ... [2021-03-10 17:36:07,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07" (1/1) ... [2021-03-10 17:36:07,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:36:08,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:36:08,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:36:08,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:36:08,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07" (1/1) ... [2021-03-10 17:36:08,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07" (1/1) ... [2021-03-10 17:36:08,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07" (1/1) ... [2021-03-10 17:36:08,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07" (1/1) ... [2021-03-10 17:36:08,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07" (1/1) ... [2021-03-10 17:36:08,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07" (1/1) ... [2021-03-10 17:36:08,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07" (1/1) ... [2021-03-10 17:36:08,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:36:08,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:36:08,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:36:08,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:36:08,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:36:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:36:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:36:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:36:08,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:36:08,093 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:36:08,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:36:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:36:08,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:36:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:36:08,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:36:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:36:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:36:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:36:08,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:36:08,096 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:36:08,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:36:08,367 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:36:08,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:36:08 BoogieIcfgContainer [2021-03-10 17:36:08,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:36:08,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:36:08,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:36:08,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:36:08,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:36:07" (1/3) ... [2021-03-10 17:36:08,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30999076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:36:08, skipping insertion in model container [2021-03-10 17:36:08,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:36:07" (2/3) ... [2021-03-10 17:36:08,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30999076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:36:08, skipping insertion in model container [2021-03-10 17:36:08,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:36:08" (3/3) ... [2021-03-10 17:36:08,377 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.oepc.i [2021-03-10 17:36:08,380 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:36:08,381 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:36:08,383 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:36:08,384 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:36:08,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,401 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,401 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,401 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,402 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,402 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,402 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,404 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,404 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,404 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,404 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,407 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,407 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,409 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,410 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,411 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,411 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:36:08,412 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:36:08,423 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:36:08,435 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:36:08,435 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:36:08,435 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:36:08,436 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:36:08,436 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:36:08,436 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:36:08,436 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:36:08,436 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:36:08,448 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-03-10 17:36:08,825 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:36:08,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:36:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:36:08,895 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:36:08,896 INFO L519 BasicCegarLoop]: 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] [2021-03-10 17:36:08,896 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:36:08,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:36:08,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2092073770, now seen corresponding path program 1 times [2021-03-10 17:36:08,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:36:08,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425683843] [2021-03-10 17:36:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:36:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:36:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:36:09,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425683843] [2021-03-10 17:36:09,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:36:09,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:36:09,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151791248] [2021-03-10 17:36:09,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:36:09,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:36:09,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:36:09,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:36:09,202 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2021-03-10 17:36:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:36:09,427 INFO L93 Difference]: Finished difference Result 12606 states and 43918 transitions. [2021-03-10 17:36:09,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:36:09,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) Word has length 40 [2021-03-10 17:36:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:36:09,473 INFO L225 Difference]: With dead ends: 12606 [2021-03-10 17:36:09,473 INFO L226 Difference]: Without dead ends: 4451 [2021-03-10 17:36:09,474 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 86.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:36:09,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2021-03-10 17:36:09,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 4451. [2021-03-10 17:36:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4451 states, 4450 states have (on average 3.418876404494382) internal successors, (15214), 4450 states have internal predecessors, (15214), 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) [2021-03-10 17:36:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4451 states to 4451 states and 15214 transitions. [2021-03-10 17:36:09,719 INFO L78 Accepts]: Start accepts. Automaton has 4451 states and 15214 transitions. Word has length 40 [2021-03-10 17:36:09,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:36:09,719 INFO L480 AbstractCegarLoop]: Abstraction has 4451 states and 15214 transitions. [2021-03-10 17:36:09,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2021-03-10 17:36:09,720 INFO L276 IsEmpty]: Start isEmpty. Operand 4451 states and 15214 transitions. [2021-03-10 17:36:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 17:36:09,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:36:09,726 INFO L519 BasicCegarLoop]: 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] [2021-03-10 17:36:09,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:36:09,726 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:36:09,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:36:09,727 INFO L82 PathProgramCache]: Analyzing trace with hash -2093227861, now seen corresponding path program 1 times [2021-03-10 17:36:09,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:36:09,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750950304] [2021-03-10 17:36:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:36:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:36:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:36:09,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750950304] [2021-03-10 17:36:09,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:36:09,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:36:09,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302019672] [2021-03-10 17:36:09,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:36:09,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:36:09,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:36:09,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:36:09,808 INFO L87 Difference]: Start difference. First operand 4451 states and 15214 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-03-10 17:36:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:36:09,946 INFO L93 Difference]: Finished difference Result 5263 states and 17595 transitions. [2021-03-10 17:36:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:36:09,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) Word has length 42 [2021-03-10 17:36:09,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:36:09,965 INFO L225 Difference]: With dead ends: 5263 [2021-03-10 17:36:09,965 INFO L226 Difference]: Without dead ends: 3891 [2021-03-10 17:36:09,966 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 65.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:36:09,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2021-03-10 17:36:10,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3891. [2021-03-10 17:36:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3891 states, 3890 states have (on average 3.3352185089974293) internal successors, (12974), 3890 states have internal predecessors, (12974), 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) [2021-03-10 17:36:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3891 states to 3891 states and 12974 transitions. [2021-03-10 17:36:10,063 INFO L78 Accepts]: Start accepts. Automaton has 3891 states and 12974 transitions. Word has length 42 [2021-03-10 17:36:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:36:10,064 INFO L480 AbstractCegarLoop]: Abstraction has 3891 states and 12974 transitions. [2021-03-10 17:36:10,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-03-10 17:36:10,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3891 states and 12974 transitions. [2021-03-10 17:36:10,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:36:10,071 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:36:10,072 INFO L519 BasicCegarLoop]: 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] [2021-03-10 17:36:10,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:36:10,072 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:36:10,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:36:10,078 INFO L82 PathProgramCache]: Analyzing trace with hash 857817644, now seen corresponding path program 1 times [2021-03-10 17:36:10,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:36:10,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238210252] [2021-03-10 17:36:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:36:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:36:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:36:10,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238210252] [2021-03-10 17:36:10,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:36:10,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:36:10,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353121783] [2021-03-10 17:36:10,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:36:10,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:36:10,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:36:10,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:36:10,240 INFO L87 Difference]: Start difference. First operand 3891 states and 12974 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2021-03-10 17:36:10,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:36:10,379 INFO L93 Difference]: Finished difference Result 3531 states and 11303 transitions. [2021-03-10 17:36:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:36:10,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) Word has length 44 [2021-03-10 17:36:10,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:36:10,389 INFO L225 Difference]: With dead ends: 3531 [2021-03-10 17:36:10,389 INFO L226 Difference]: Without dead ends: 2415 [2021-03-10 17:36:10,389 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:36:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2021-03-10 17:36:10,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2415. [2021-03-10 17:36:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2414 states have (on average 3.1325600662800333) internal successors, (7562), 2414 states have internal predecessors, (7562), 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) [2021-03-10 17:36:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 7562 transitions. [2021-03-10 17:36:10,435 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 7562 transitions. Word has length 44 [2021-03-10 17:36:10,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:36:10,435 INFO L480 AbstractCegarLoop]: Abstraction has 2415 states and 7562 transitions. [2021-03-10 17:36:10,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2021-03-10 17:36:10,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 7562 transitions. [2021-03-10 17:36:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:36:10,439 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:36:10,439 INFO L519 BasicCegarLoop]: 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] [2021-03-10 17:36:10,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:36:10,439 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:36:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:36:10,441 INFO L82 PathProgramCache]: Analyzing trace with hash 205922990, now seen corresponding path program 1 times [2021-03-10 17:36:10,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:36:10,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135893483] [2021-03-10 17:36:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:36:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:36:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:36:10,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135893483] [2021-03-10 17:36:10,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:36:10,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:36:10,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528225566] [2021-03-10 17:36:10,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:36:10,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:36:10,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:36:10,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:36:10,575 INFO L87 Difference]: Start difference. First operand 2415 states and 7562 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2021-03-10 17:36:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:36:10,711 INFO L93 Difference]: Finished difference Result 1767 states and 5339 transitions. [2021-03-10 17:36:10,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:36:10,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) Word has length 48 [2021-03-10 17:36:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:36:10,717 INFO L225 Difference]: With dead ends: 1767 [2021-03-10 17:36:10,718 INFO L226 Difference]: Without dead ends: 1227 [2021-03-10 17:36:10,718 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:36:10,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2021-03-10 17:36:10,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1227. [2021-03-10 17:36:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 2.938009787928222) internal successors, (3602), 1226 states have internal predecessors, (3602), 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) [2021-03-10 17:36:10,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 3602 transitions. [2021-03-10 17:36:10,740 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 3602 transitions. Word has length 48 [2021-03-10 17:36:10,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:36:10,740 INFO L480 AbstractCegarLoop]: Abstraction has 1227 states and 3602 transitions. [2021-03-10 17:36:10,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2021-03-10 17:36:10,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 3602 transitions. [2021-03-10 17:36:10,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-03-10 17:36:10,743 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:36:10,743 INFO L519 BasicCegarLoop]: 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, 1, 1, 1] [2021-03-10 17:36:10,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:36:10,743 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:36:10,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:36:10,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1014464848, now seen corresponding path program 1 times [2021-03-10 17:36:10,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:36:10,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024401571] [2021-03-10 17:36:10,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:36:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:36:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:36:10,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024401571] [2021-03-10 17:36:10,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:36:10,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:36:10,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915295552] [2021-03-10 17:36:10,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:36:10,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:36:10,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:36:10,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:36:10,856 INFO L87 Difference]: Start difference. First operand 1227 states and 3602 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) [2021-03-10 17:36:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:36:10,911 INFO L93 Difference]: Finished difference Result 1750 states and 5145 transitions. [2021-03-10 17:36:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 17:36:10,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) Word has length 52 [2021-03-10 17:36:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:36:10,914 INFO L225 Difference]: With dead ends: 1750 [2021-03-10 17:36:10,915 INFO L226 Difference]: Without dead ends: 857 [2021-03-10 17:36:10,915 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-10 17:36:10,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2021-03-10 17:36:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 857. [2021-03-10 17:36:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 2.8703271028037385) internal successors, (2457), 856 states have internal predecessors, (2457), 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) [2021-03-10 17:36:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2457 transitions. [2021-03-10 17:36:10,930 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2457 transitions. Word has length 52 [2021-03-10 17:36:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:36:10,931 INFO L480 AbstractCegarLoop]: Abstraction has 857 states and 2457 transitions. [2021-03-10 17:36:10,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) [2021-03-10 17:36:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2457 transitions. [2021-03-10 17:36:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-03-10 17:36:10,933 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:36:10,935 INFO L519 BasicCegarLoop]: 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, 1, 1, 1] [2021-03-10 17:36:10,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:36:10,935 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:36:10,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:36:10,936 INFO L82 PathProgramCache]: Analyzing trace with hash -870741778, now seen corresponding path program 2 times [2021-03-10 17:36:10,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:36:10,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500004652] [2021-03-10 17:36:10,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:36:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:36:11,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:36:11,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500004652] [2021-03-10 17:36:11,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:36:11,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:36:11,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125891175] [2021-03-10 17:36:11,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:36:11,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:36:11,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:36:11,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:36:11,052 INFO L87 Difference]: Start difference. First operand 857 states and 2457 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-03-10 17:36:11,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:36:11,138 INFO L93 Difference]: Finished difference Result 1324 states and 3826 transitions. [2021-03-10 17:36:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:36:11,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) Word has length 52 [2021-03-10 17:36:11,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:36:11,142 INFO L225 Difference]: With dead ends: 1324 [2021-03-10 17:36:11,142 INFO L226 Difference]: Without dead ends: 713 [2021-03-10 17:36:11,142 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:36:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-03-10 17:36:11,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 681. [2021-03-10 17:36:11,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 2.825) internal successors, (1921), 680 states have internal predecessors, (1921), 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) [2021-03-10 17:36:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1921 transitions. [2021-03-10 17:36:11,155 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1921 transitions. Word has length 52 [2021-03-10 17:36:11,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:36:11,155 INFO L480 AbstractCegarLoop]: Abstraction has 681 states and 1921 transitions. [2021-03-10 17:36:11,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-03-10 17:36:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1921 transitions. [2021-03-10 17:36:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-03-10 17:36:11,157 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:36:11,157 INFO L519 BasicCegarLoop]: 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, 1, 1, 1] [2021-03-10 17:36:11,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:36:11,157 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:36:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:36:11,158 INFO L82 PathProgramCache]: Analyzing trace with hash -45690480, now seen corresponding path program 3 times [2021-03-10 17:36:11,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:36:11,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649169387] [2021-03-10 17:36:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:36:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:36:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:36:11,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649169387] [2021-03-10 17:36:11,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:36:11,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:36:11,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131148936] [2021-03-10 17:36:11,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:36:11,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:36:11,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:36:11,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:36:11,258 INFO L87 Difference]: Start difference. First operand 681 states and 1921 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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) [2021-03-10 17:36:11,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:36:11,335 INFO L93 Difference]: Finished difference Result 1084 states and 3098 transitions. [2021-03-10 17:36:11,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:36:11,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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) Word has length 52 [2021-03-10 17:36:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:36:11,344 INFO L225 Difference]: With dead ends: 1084 [2021-03-10 17:36:11,344 INFO L226 Difference]: Without dead ends: 637 [2021-03-10 17:36:11,345 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 85.8ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:36:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-03-10 17:36:11,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2021-03-10 17:36:11,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 2.809748427672956) internal successors, (1787), 636 states have internal predecessors, (1787), 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) [2021-03-10 17:36:11,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1787 transitions. [2021-03-10 17:36:11,355 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1787 transitions. Word has length 52 [2021-03-10 17:36:11,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:36:11,355 INFO L480 AbstractCegarLoop]: Abstraction has 637 states and 1787 transitions. [2021-03-10 17:36:11,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 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) [2021-03-10 17:36:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1787 transitions. [2021-03-10 17:36:11,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-03-10 17:36:11,356 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:36:11,356 INFO L519 BasicCegarLoop]: 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, 1, 1, 1] [2021-03-10 17:36:11,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:36:11,357 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:36:11,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:36:11,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1599903478, now seen corresponding path program 4 times [2021-03-10 17:36:11,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:36:11,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75136331] [2021-03-10 17:36:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:36:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:36:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:36:11,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75136331] [2021-03-10 17:36:11,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:36:11,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:36:11,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526911263] [2021-03-10 17:36:11,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:36:11,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:36:11,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:36:11,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:36:11,421 INFO L87 Difference]: Start difference. First operand 637 states and 1787 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-03-10 17:36:11,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:36:11,490 INFO L93 Difference]: Finished difference Result 583 states and 1625 transitions. [2021-03-10 17:36:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:36:11,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) Word has length 52 [2021-03-10 17:36:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:36:11,492 INFO L225 Difference]: With dead ends: 583 [2021-03-10 17:36:11,492 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:36:11,493 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:36:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:36:11,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:36:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-03-10 17:36:11,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:36:11,496 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-03-10 17:36:11,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:36:11,496 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:36:11,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-03-10 17:36:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:36:11,497 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:36:11,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:36:11,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:36:11 BasicIcfg [2021-03-10 17:36:11,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:36:11,501 INFO L168 Benchmark]: Toolchain (without parser) took 3901.53 ms. Allocated memory was 255.9 MB in the beginning and 1.0 GB in the end (delta: 780.1 MB). Free memory was 234.7 MB in the beginning and 733.3 MB in the end (delta: -498.6 MB). Peak memory consumption was 281.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:36:11,503 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 7.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:36:11,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.01 ms. Allocated memory was 255.9 MB in the beginning and 402.7 MB in the end (delta: 146.8 MB). Free memory was 234.3 MB in the beginning and 366.9 MB in the end (delta: -132.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-10 17:36:11,503 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.12 ms. Allocated memory is still 402.7 MB. Free memory was 366.9 MB in the beginning and 365.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:36:11,506 INFO L168 Benchmark]: Boogie Preprocessor took 27.58 ms. Allocated memory is still 402.7 MB. Free memory was 365.0 MB in the beginning and 363.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:36:11,506 INFO L168 Benchmark]: RCFGBuilder took 339.14 ms. Allocated memory is still 402.7 MB. Free memory was 363.9 MB in the beginning and 341.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:36:11,506 INFO L168 Benchmark]: TraceAbstraction took 3127.35 ms. Allocated memory was 402.7 MB in the beginning and 1.0 GB in the end (delta: 633.3 MB). Free memory was 340.8 MB in the beginning and 733.3 MB in the end (delta: -392.5 MB). Peak memory consumption was 244.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:36:11,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 7.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 344.01 ms. Allocated memory was 255.9 MB in the beginning and 402.7 MB in the end (delta: 146.8 MB). Free memory was 234.3 MB in the beginning and 366.9 MB in the end (delta: -132.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.12 ms. Allocated memory is still 402.7 MB. Free memory was 366.9 MB in the beginning and 365.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.58 ms. Allocated memory is still 402.7 MB. Free memory was 365.0 MB in the beginning and 363.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 339.14 ms. Allocated memory is still 402.7 MB. Free memory was 363.9 MB in the beginning and 341.2 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3127.35 ms. Allocated memory was 402.7 MB in the beginning and 1.0 GB in the end (delta: 633.3 MB). Free memory was 340.8 MB in the beginning and 733.3 MB in the end (delta: -392.5 MB). Peak memory consumption was 244.0 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3063.5ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 92.0ms, AutomataDifference: 1058.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 389.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 712 SDtfs, 1014 SDslu, 2391 SDs, 0 SdLazy, 282 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 192.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 699.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 438.1ms AutomataMinimizationTime, 8 MinimizatonAttempts, 32 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.3ms SsaConstructionTime, 159.8ms SatisfiabilityAnalysisTime, 723.6ms InterpolantComputationTime, 382 NumberOfCodeBlocks, 382 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 1180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...