/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/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 00:59:37,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 00:59:37,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 00:59:37,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 00:59:37,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 00:59:37,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 00:59:37,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 00:59:37,963 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 [2021-04-15 00:59:37,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 00:59:37,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 00:59:37,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 00:59:37,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 00:59:37,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 00:59:37,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 00:59:37,994 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 00:59:37,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 00:59:37,994 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 00:59:37,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 00:59:37,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 00:59:37,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 00:59:37,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 00:59:37,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 00:59:37,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 00:59:37,995 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 00:59:37,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 00:59:37,995 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 00:59:37,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 00:59:37,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 00:59:37,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 00:59:37,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 00:59:37,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 00:59:37,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 00:59:37,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 00:59:37,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 00:59:37,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 00:59:37,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 00:59:37,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 00:59:37,997 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 00:59:37,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 00:59:37,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 00:59:38,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 00:59:38,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 00:59:38,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 00:59:38,257 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 00:59:38,258 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 00:59:38,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-04-15 00:59:38,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc4c07a70/5544074cfab848dabfbda49175bebc0f/FLAGff58a81be [2021-04-15 00:59:38,773 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 00:59:38,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-04-15 00:59:38,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc4c07a70/5544074cfab848dabfbda49175bebc0f/FLAGff58a81be [2021-04-15 00:59:38,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc4c07a70/5544074cfab848dabfbda49175bebc0f [2021-04-15 00:59:38,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 00:59:38,809 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 00:59:38,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 00:59:38,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 00:59:38,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 00:59:38,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 12:59:38" (1/1) ... [2021-04-15 00:59:38,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba0a77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:38, skipping insertion in model container [2021-04-15 00:59:38,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 12:59:38" (1/1) ... [2021-04-15 00:59:38,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 00:59:38,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 00:59:38,991 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/safe011_tso.opt.i[949,962] [2021-04-15 00:59:39,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 00:59:39,166 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 00:59:39,174 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/safe011_tso.opt.i[949,962] [2021-04-15 00:59:39,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 00:59:39,253 INFO L208 MainTranslator]: Completed translation [2021-04-15 00:59:39,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39 WrapperNode [2021-04-15 00:59:39,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 00:59:39,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 00:59:39,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 00:59:39,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 00:59:39,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39" (1/1) ... [2021-04-15 00:59:39,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39" (1/1) ... [2021-04-15 00:59:39,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 00:59:39,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 00:59:39,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 00:59:39,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 00:59:39,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39" (1/1) ... [2021-04-15 00:59:39,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39" (1/1) ... [2021-04-15 00:59:39,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39" (1/1) ... [2021-04-15 00:59:39,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39" (1/1) ... [2021-04-15 00:59:39,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39" (1/1) ... [2021-04-15 00:59:39,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39" (1/1) ... [2021-04-15 00:59:39,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39" (1/1) ... [2021-04-15 00:59:39,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 00:59:39,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 00:59:39,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 00:59:39,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 00:59:39,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39" (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 [2021-04-15 00:59:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 00:59:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-15 00:59:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 00:59:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 00:59:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-15 00:59:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-15 00:59:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-15 00:59:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-15 00:59:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-15 00:59:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-15 00:59:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 00:59:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-15 00:59:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 00:59:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 00:59:39,391 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 00:59:39,591 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 00:59:39,591 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-15 00:59:39,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 12:59:39 BoogieIcfgContainer [2021-04-15 00:59:39,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 00:59:39,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 00:59:39,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 00:59:39,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 00:59:39,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 12:59:38" (1/3) ... [2021-04-15 00:59:39,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5134daae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 12:59:39, skipping insertion in model container [2021-04-15 00:59:39,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:59:39" (2/3) ... [2021-04-15 00:59:39,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5134daae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 12:59:39, skipping insertion in model container [2021-04-15 00:59:39,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 12:59:39" (3/3) ... [2021-04-15 00:59:39,597 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2021-04-15 00:59:39,603 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 00:59:39,603 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 00:59:39,605 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 00:59:39,605 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 00:59:39,639 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,640 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,640 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,640 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,640 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,640 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,640 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,640 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,641 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,641 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,641 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,641 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,641 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,641 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,642 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,642 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,642 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,642 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,642 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,642 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,642 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,643 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,643 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,643 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,643 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,643 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,644 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,644 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,661 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,661 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,661 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,661 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:59:39,662 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-15 00:59:39,677 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-15 00:59:39,696 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 00:59:39,696 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 00:59:39,696 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 00:59:39,696 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 00:59:39,697 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 00:59:39,697 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 00:59:39,697 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 00:59:39,697 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 00:59:39,707 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 74 transitions, 163 flow [2021-04-15 00:59:40,174 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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) [2021-04-15 00:59:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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) [2021-04-15 00:59:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-04-15 00:59:40,223 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:59:40,224 INFO L551 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] [2021-04-15 00:59:40,224 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:59:40,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:59:40,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2097917691, now seen corresponding path program 1 times [2021-04-15 00:59:40,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:59:40,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118332846] [2021-04-15 00:59:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:59:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:59:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:59:40,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118332846] [2021-04-15 00:59:40,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:59:40,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 00:59:40,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708082791] [2021-04-15 00:59:40,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 00:59:40,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:59:40,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 00:59:40,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 00:59:40,586 INFO L87 Difference]: Start difference. First operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-04-15 00:59:40,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:59:40,883 INFO L93 Difference]: Finished difference Result 21437 states and 74235 transitions. [2021-04-15 00:59:40,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 00:59:40,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2021-04-15 00:59:40,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:59:40,938 INFO L225 Difference]: With dead ends: 21437 [2021-04-15 00:59:40,939 INFO L226 Difference]: Without dead ends: 6702 [2021-04-15 00:59:40,940 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 108.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 00:59:41,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6702 states. [2021-04-15 00:59:41,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6702 to 5406. [2021-04-15 00:59:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 3.347826086956522) internal successors, (18095), 5405 states have internal predecessors, (18095), 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) [2021-04-15 00:59:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 18095 transitions. [2021-04-15 00:59:41,279 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 18095 transitions. Word has length 39 [2021-04-15 00:59:41,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:59:41,280 INFO L480 AbstractCegarLoop]: Abstraction has 5406 states and 18095 transitions. [2021-04-15 00:59:41,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-04-15 00:59:41,280 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 18095 transitions. [2021-04-15 00:59:41,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-04-15 00:59:41,288 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:59:41,288 INFO L551 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] [2021-04-15 00:59:41,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 00:59:41,288 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:59:41,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:59:41,289 INFO L82 PathProgramCache]: Analyzing trace with hash 178725702, now seen corresponding path program 1 times [2021-04-15 00:59:41,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:59:41,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507754263] [2021-04-15 00:59:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:59:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:59:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:59:41,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507754263] [2021-04-15 00:59:41,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:59:41,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 00:59:41,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740804915] [2021-04-15 00:59:41,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 00:59:41,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:59:41,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 00:59:41,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 00:59:41,433 INFO L87 Difference]: Start difference. First operand 5406 states and 18095 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-04-15 00:59:41,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:59:41,691 INFO L93 Difference]: Finished difference Result 7694 states and 25434 transitions. [2021-04-15 00:59:41,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 00:59:41,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 41 [2021-04-15 00:59:41,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:59:41,718 INFO L225 Difference]: With dead ends: 7694 [2021-04-15 00:59:41,718 INFO L226 Difference]: Without dead ends: 5922 [2021-04-15 00:59:41,719 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 128.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 00:59:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2021-04-15 00:59:41,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 4506. [2021-04-15 00:59:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4505 states have (on average 3.320976692563818) internal successors, (14961), 4505 states have internal predecessors, (14961), 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) [2021-04-15 00:59:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 14961 transitions. [2021-04-15 00:59:41,836 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 14961 transitions. Word has length 41 [2021-04-15 00:59:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:59:41,836 INFO L480 AbstractCegarLoop]: Abstraction has 4506 states and 14961 transitions. [2021-04-15 00:59:41,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-04-15 00:59:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 14961 transitions. [2021-04-15 00:59:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-04-15 00:59:41,845 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:59:41,845 INFO L551 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] [2021-04-15 00:59:41,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 00:59:41,846 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:59:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:59:41,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1166869702, now seen corresponding path program 1 times [2021-04-15 00:59:41,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:59:41,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708440270] [2021-04-15 00:59:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:59:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:59:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:59:42,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708440270] [2021-04-15 00:59:42,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:59:42,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 00:59:42,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914009385] [2021-04-15 00:59:42,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 00:59:42,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:59:42,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 00:59:42,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 00:59:42,008 INFO L87 Difference]: Start difference. First operand 4506 states and 14961 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-04-15 00:59:42,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:59:42,274 INFO L93 Difference]: Finished difference Result 7733 states and 25311 transitions. [2021-04-15 00:59:42,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 00:59:42,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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 41 [2021-04-15 00:59:42,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:59:42,305 INFO L225 Difference]: With dead ends: 7733 [2021-04-15 00:59:42,306 INFO L226 Difference]: Without dead ends: 5838 [2021-04-15 00:59:42,306 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 242.8ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-04-15 00:59:42,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2021-04-15 00:59:42,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 4414. [2021-04-15 00:59:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4414 states, 4413 states have (on average 3.3052345343303875) internal successors, (14586), 4413 states have internal predecessors, (14586), 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) [2021-04-15 00:59:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 14586 transitions. [2021-04-15 00:59:42,482 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 14586 transitions. Word has length 41 [2021-04-15 00:59:42,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:59:42,482 INFO L480 AbstractCegarLoop]: Abstraction has 4414 states and 14586 transitions. [2021-04-15 00:59:42,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-04-15 00:59:42,482 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 14586 transitions. [2021-04-15 00:59:42,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-04-15 00:59:42,489 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:59:42,489 INFO L551 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] [2021-04-15 00:59:42,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 00:59:42,489 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:59:42,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:59:42,490 INFO L82 PathProgramCache]: Analyzing trace with hash 706496095, now seen corresponding path program 1 times [2021-04-15 00:59:42,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:59:42,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507420458] [2021-04-15 00:59:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:59:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:59:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:59:42,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507420458] [2021-04-15 00:59:42,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:59:42,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 00:59:42,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229723760] [2021-04-15 00:59:42,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 00:59:42,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:59:42,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 00:59:42,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-15 00:59:42,601 INFO L87 Difference]: Start difference. First operand 4414 states and 14586 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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) [2021-04-15 00:59:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:59:42,727 INFO L93 Difference]: Finished difference Result 5528 states and 17949 transitions. [2021-04-15 00:59:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 00:59:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 43 [2021-04-15 00:59:42,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:59:42,734 INFO L225 Difference]: With dead ends: 5528 [2021-04-15 00:59:42,735 INFO L226 Difference]: Without dead ends: 2493 [2021-04-15 00:59:42,735 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 00:59:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2021-04-15 00:59:42,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2301. [2021-04-15 00:59:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2300 states have (on average 3.13) internal successors, (7199), 2300 states have internal predecessors, (7199), 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) [2021-04-15 00:59:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 7199 transitions. [2021-04-15 00:59:42,775 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 7199 transitions. Word has length 43 [2021-04-15 00:59:42,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:59:42,775 INFO L480 AbstractCegarLoop]: Abstraction has 2301 states and 7199 transitions. [2021-04-15 00:59:42,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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) [2021-04-15 00:59:42,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 7199 transitions. [2021-04-15 00:59:42,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-04-15 00:59:42,778 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:59:42,778 INFO L551 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] [2021-04-15 00:59:42,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 00:59:42,779 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:59:42,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:59:42,779 INFO L82 PathProgramCache]: Analyzing trace with hash 778391601, now seen corresponding path program 1 times [2021-04-15 00:59:42,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:59:42,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11691592] [2021-04-15 00:59:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:59:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:59:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:59:42,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11691592] [2021-04-15 00:59:42,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:59:42,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 00:59:42,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685022605] [2021-04-15 00:59:42,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 00:59:42,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:59:42,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 00:59:42,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 00:59:42,869 INFO L87 Difference]: Start difference. First operand 2301 states and 7199 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2021-04-15 00:59:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:59:42,971 INFO L93 Difference]: Finished difference Result 2621 states and 8155 transitions. [2021-04-15 00:59:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 00:59:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 [2021-04-15 00:59:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:59:42,975 INFO L225 Difference]: With dead ends: 2621 [2021-04-15 00:59:42,975 INFO L226 Difference]: Without dead ends: 2061 [2021-04-15 00:59:42,975 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 89.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 00:59:42,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2021-04-15 00:59:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 2061. [2021-04-15 00:59:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2060 states have (on average 3.096601941747573) internal successors, (6379), 2060 states have internal predecessors, (6379), 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) [2021-04-15 00:59:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 6379 transitions. [2021-04-15 00:59:43,006 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 6379 transitions. Word has length 44 [2021-04-15 00:59:43,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:59:43,007 INFO L480 AbstractCegarLoop]: Abstraction has 2061 states and 6379 transitions. [2021-04-15 00:59:43,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2021-04-15 00:59:43,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 6379 transitions. [2021-04-15 00:59:43,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-04-15 00:59:43,010 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:59:43,011 INFO L551 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] [2021-04-15 00:59:43,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-15 00:59:43,011 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:59:43,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:59:43,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1854979728, now seen corresponding path program 1 times [2021-04-15 00:59:43,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:59:43,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112463863] [2021-04-15 00:59:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:59:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:59:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:59:43,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112463863] [2021-04-15 00:59:43,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:59:43,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 00:59:43,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323241807] [2021-04-15 00:59:43,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 00:59:43,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:59:43,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 00:59:43,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 00:59:43,098 INFO L87 Difference]: Start difference. First operand 2061 states and 6379 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-04-15 00:59:43,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:59:43,178 INFO L93 Difference]: Finished difference Result 2538 states and 7737 transitions. [2021-04-15 00:59:43,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 00:59:43,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2021-04-15 00:59:43,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:59:43,182 INFO L225 Difference]: With dead ends: 2538 [2021-04-15 00:59:43,182 INFO L226 Difference]: Without dead ends: 1842 [2021-04-15 00:59:43,183 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 00:59:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2021-04-15 00:59:43,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1842. [2021-04-15 00:59:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 3.033134166214014) internal successors, (5584), 1841 states have internal predecessors, (5584), 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) [2021-04-15 00:59:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 5584 transitions. [2021-04-15 00:59:43,211 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 5584 transitions. Word has length 46 [2021-04-15 00:59:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:59:43,211 INFO L480 AbstractCegarLoop]: Abstraction has 1842 states and 5584 transitions. [2021-04-15 00:59:43,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-04-15 00:59:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 5584 transitions. [2021-04-15 00:59:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-15 00:59:43,214 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:59:43,214 INFO L551 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] [2021-04-15 00:59:43,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-15 00:59:43,215 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:59:43,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:59:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1454541897, now seen corresponding path program 1 times [2021-04-15 00:59:43,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:59:43,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848620501] [2021-04-15 00:59:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:59:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:59:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:59:43,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848620501] [2021-04-15 00:59:43,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:59:43,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 00:59:43,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108584494] [2021-04-15 00:59:43,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 00:59:43,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:59:43,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 00:59:43,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 00:59:43,298 INFO L87 Difference]: Start difference. First operand 1842 states and 5584 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-04-15 00:59:43,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:59:43,390 INFO L93 Difference]: Finished difference Result 1779 states and 5218 transitions. [2021-04-15 00:59:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 00:59:43,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 47 [2021-04-15 00:59:43,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:59:43,393 INFO L225 Difference]: With dead ends: 1779 [2021-04-15 00:59:43,393 INFO L226 Difference]: Without dead ends: 1231 [2021-04-15 00:59:43,394 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-04-15 00:59:43,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-04-15 00:59:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2021-04-15 00:59:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 2.8601626016260164) internal successors, (3518), 1230 states have internal predecessors, (3518), 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) [2021-04-15 00:59:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 3518 transitions. [2021-04-15 00:59:43,412 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 3518 transitions. Word has length 47 [2021-04-15 00:59:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:59:43,412 INFO L480 AbstractCegarLoop]: Abstraction has 1231 states and 3518 transitions. [2021-04-15 00:59:43,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-04-15 00:59:43,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 3518 transitions. [2021-04-15 00:59:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-04-15 00:59:43,414 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:59:43,414 INFO L551 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] [2021-04-15 00:59:43,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-15 00:59:43,415 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:59:43,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:59:43,415 INFO L82 PathProgramCache]: Analyzing trace with hash 689421770, now seen corresponding path program 1 times [2021-04-15 00:59:43,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:59:43,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907465700] [2021-04-15 00:59:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:59:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:59:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:59:43,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907465700] [2021-04-15 00:59:43,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:59:43,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 00:59:43,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267035752] [2021-04-15 00:59:43,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 00:59:43,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:59:43,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 00:59:43,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 00:59:43,486 INFO L87 Difference]: Start difference. First operand 1231 states and 3518 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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) [2021-04-15 00:59:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:59:43,550 INFO L93 Difference]: Finished difference Result 799 states and 2195 transitions. [2021-04-15 00:59:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 00:59:43,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 49 [2021-04-15 00:59:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:59:43,552 INFO L225 Difference]: With dead ends: 799 [2021-04-15 00:59:43,552 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 00:59:43,553 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 66.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-04-15 00:59:43,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 00:59:43,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 00:59:43,554 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) [2021-04-15 00:59:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 00:59:43,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-04-15 00:59:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:59:43,555 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 00:59:43,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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) [2021-04-15 00:59:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 00:59:43,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 00:59:43,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-15 00:59:43,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 12:59:43 BasicIcfg [2021-04-15 00:59:43,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 00:59:43,559 INFO L168 Benchmark]: Toolchain (without parser) took 4749.95 ms. Allocated memory was 255.9 MB in the beginning and 1.1 GB in the end (delta: 799.0 MB). Free memory was 235.2 MB in the beginning and 741.7 MB in the end (delta: -506.5 MB). Peak memory consumption was 293.6 MB. Max. memory is 16.0 GB. [2021-04-15 00:59:43,561 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 00:59:43,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.23 ms. Allocated memory was 255.9 MB in the beginning and 394.3 MB in the end (delta: 138.4 MB). Free memory was 234.6 MB in the beginning and 357.0 MB in the end (delta: -122.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-04-15 00:59:43,562 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.56 ms. Allocated memory is still 394.3 MB. Free memory was 357.0 MB in the beginning and 354.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 00:59:43,564 INFO L168 Benchmark]: Boogie Preprocessor took 30.59 ms. Allocated memory is still 394.3 MB. Free memory was 354.8 MB in the beginning and 353.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 00:59:43,564 INFO L168 Benchmark]: RCFGBuilder took 269.14 ms. Allocated memory is still 394.3 MB. Free memory was 353.2 MB in the beginning and 331.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-04-15 00:59:43,564 INFO L168 Benchmark]: TraceAbstraction took 3965.02 ms. Allocated memory was 394.3 MB in the beginning and 1.1 GB in the end (delta: 660.6 MB). Free memory was 331.1 MB in the beginning and 741.7 MB in the end (delta: -410.5 MB). Peak memory consumption was 253.2 MB. Max. memory is 16.0 GB. [2021-04-15 00:59:43,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 442.23 ms. Allocated memory was 255.9 MB in the beginning and 394.3 MB in the end (delta: 138.4 MB). Free memory was 234.6 MB in the beginning and 357.0 MB in the end (delta: -122.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 37.56 ms. Allocated memory is still 394.3 MB. Free memory was 357.0 MB in the beginning and 354.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.59 ms. Allocated memory is still 394.3 MB. Free memory was 354.8 MB in the beginning and 353.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 269.14 ms. Allocated memory is still 394.3 MB. Free memory was 353.2 MB in the beginning and 331.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3965.02 ms. Allocated memory was 394.3 MB in the beginning and 1.1 GB in the end (delta: 660.6 MB). Free memory was 331.1 MB in the beginning and 741.7 MB in the end (delta: -410.5 MB). Peak memory consumption was 253.2 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3861.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 81.2ms, AutomataDifference: 1452.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 478.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 788 SDtfs, 1471 SDslu, 2545 SDs, 0 SdLazy, 312 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 202.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 869.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8818occurred in iteration=0, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 683.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 4328 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.6ms SsaConstructionTime, 179.7ms SatisfiabilityAnalysisTime, 757.0ms InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 342 ConstructedInterpolants, 0 QuantifiedInterpolants, 1438 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...