/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 00:19:54,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 00:19:54,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 00:19:54,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 00:19:54,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 00:19:54,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 00:19:54,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 00:19:54,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 00:19:54,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 00:19:54,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 00:19:54,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 00:19:54,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 00:19:54,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 00:19:54,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 00:19:54,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 00:19:54,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 00:19:54,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 00:19:54,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 00:19:54,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 00:19:54,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 00:19:54,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-07-14 00:19:54,657 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 00:19:54,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 00:19:54,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 00:19:54,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 00:19:54,660 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 00:19:54,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 00:19:54,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 00:19:54,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 00:19:54,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 00:19:54,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 00:19:54,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 00:19:54,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 00:19:54,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 00:19:54,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 00:19:54,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 00:19:54,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 00:19:54,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 00:19:54,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 00:19:54,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 00:19:54,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 00:19:54,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 00:19:54,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 00:19:54,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 00:19:54,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 00:19:54,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 00:19:54,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 00:19:54,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 00:19:54,663 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 00:19:54,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 00:19:54,664 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-14 00:19:54,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 00:19:54,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 00:19:54,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 00:19:54,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 00:19:54,940 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-14 00:19:54,941 INFO L275 PluginConnector]: CDTParser initialized [2021-07-14 00:19:54,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-07-14 00:19:54,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711773f5f/648564464546427086f8beb25923deb3/FLAG3f936bdae [2021-07-14 00:19:55,324 INFO L306 CDTParser]: Found 1 translation units. [2021-07-14 00:19:55,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-07-14 00:19:55,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711773f5f/648564464546427086f8beb25923deb3/FLAG3f936bdae [2021-07-14 00:19:55,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711773f5f/648564464546427086f8beb25923deb3 [2021-07-14 00:19:55,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 00:19:55,723 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-14 00:19:55,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-14 00:19:55,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-14 00:19:55,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-14 00:19:55,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:19:55" (1/1) ... [2021-07-14 00:19:55,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc97332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:55, skipping insertion in model container [2021-07-14 00:19:55,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:19:55" (1/1) ... [2021-07-14 00:19:55,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-14 00:19:55,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-14 00:19:55,878 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i[949,962] [2021-07-14 00:19:56,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-14 00:19:56,079 INFO L203 MainTranslator]: Completed pre-run [2021-07-14 00:19:56,087 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i[949,962] [2021-07-14 00:19:56,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-14 00:19:56,147 INFO L208 MainTranslator]: Completed translation [2021-07-14 00:19:56,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56 WrapperNode [2021-07-14 00:19:56,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-14 00:19:56,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 00:19:56,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 00:19:56,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 00:19:56,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56" (1/1) ... [2021-07-14 00:19:56,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56" (1/1) ... [2021-07-14 00:19:56,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 00:19:56,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 00:19:56,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 00:19:56,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 00:19:56,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56" (1/1) ... [2021-07-14 00:19:56,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56" (1/1) ... [2021-07-14 00:19:56,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56" (1/1) ... [2021-07-14 00:19:56,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56" (1/1) ... [2021-07-14 00:19:56,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56" (1/1) ... [2021-07-14 00:19:56,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56" (1/1) ... [2021-07-14 00:19:56,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56" (1/1) ... [2021-07-14 00:19:56,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 00:19:56,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 00:19:56,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 00:19:56,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 00:19:56,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56" (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 [2021-07-14 00:19:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-14 00:19:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-14 00:19:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-14 00:19:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-14 00:19:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-14 00:19:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-14 00:19:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-14 00:19:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-14 00:19:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-14 00:19:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-14 00:19:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-14 00:19:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-14 00:19:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 00:19:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 00:19:56,296 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 00:19:56,596 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 00:19:56,596 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-14 00:19:56,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:19:56 BoogieIcfgContainer [2021-07-14 00:19:56,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 00:19:56,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 00:19:56,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 00:19:56,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 00:19:56,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:19:55" (1/3) ... [2021-07-14 00:19:56,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61852c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:19:56, skipping insertion in model container [2021-07-14 00:19:56,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:19:56" (2/3) ... [2021-07-14 00:19:56,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61852c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:19:56, skipping insertion in model container [2021-07-14 00:19:56,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:19:56" (3/3) ... [2021-07-14 00:19:56,603 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2021-07-14 00:19:56,607 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 00:19:56,607 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 00:19:56,607 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 00:19:56,607 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 00:19:56,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,633 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,633 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,634 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,634 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,634 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,634 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,634 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,635 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,635 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,635 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,635 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,635 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,636 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,636 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,636 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,636 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,636 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,636 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,638 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,638 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,643 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,644 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,646 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-14 00:19:56,648 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-14 00:19:56,670 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-14 00:19:56,682 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 00:19:56,682 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 00:19:56,683 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 00:19:56,683 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 00:19:56,683 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 00:19:56,683 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 00:19:56,683 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 00:19:56,683 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 00:19:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 5557 states, 4766 states have (on average 2.0052454888795634) internal successors, (9557), 5556 states have internal predecessors, (9557), 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) [2021-07-14 00:19:57,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-07-14 00:19:57,181 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:19:57,182 INFO L508 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] [2021-07-14 00:19:57,182 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:19:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:19:57,186 INFO L82 PathProgramCache]: Analyzing trace with hash 292083127, now seen corresponding path program 1 times [2021-07-14 00:19:57,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:19:57,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770193598] [2021-07-14 00:19:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:19:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:19:57,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:57,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:57,456 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-14 00:19:57,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 00:19:57,470 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:19:57,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:19:57,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:57,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:57,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:57,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:57,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:57,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:19:57,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:19:57,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770193598] [2021-07-14 00:19:57,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770193598] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:19:57,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:19:57,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 00:19:57,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416434126] [2021-07-14 00:19:57,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 00:19:57,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:19:57,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 00:19:57,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-14 00:19:57,533 INFO L87 Difference]: Start difference. First operand has 5557 states, 4766 states have (on average 2.0052454888795634) internal successors, (9557), 5556 states have internal predecessors, (9557), 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 7.833333333333333) internal successors, (47), 6 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) [2021-07-14 00:19:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:19:57,780 INFO L93 Difference]: Finished difference Result 8709 states and 16118 transitions. [2021-07-14 00:19:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 00:19:57,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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 [2021-07-14 00:19:57,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:19:57,812 INFO L225 Difference]: With dead ends: 8709 [2021-07-14 00:19:57,813 INFO L226 Difference]: Without dead ends: 2902 [2021-07-14 00:19:57,814 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 129.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:19:57,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2021-07-14 00:19:57,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2360. [2021-07-14 00:19:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2311 states have (on average 2.159238424924275) internal successors, (4990), 2359 states have internal predecessors, (4990), 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) [2021-07-14 00:19:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 4990 transitions. [2021-07-14 00:19:57,929 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 4990 transitions. Word has length 47 [2021-07-14 00:19:57,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:19:57,929 INFO L482 AbstractCegarLoop]: Abstraction has 2360 states and 4990 transitions. [2021-07-14 00:19:57,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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) [2021-07-14 00:19:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 4990 transitions. [2021-07-14 00:19:57,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-14 00:19:57,932 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:19:57,932 INFO L508 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] [2021-07-14 00:19:57,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 00:19:57,932 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:19:57,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:19:57,933 INFO L82 PathProgramCache]: Analyzing trace with hash 460220920, now seen corresponding path program 1 times [2021-07-14 00:19:57,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:19:57,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372325219] [2021-07-14 00:19:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:19:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:19:57,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:57,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:57,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:57,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:19:57,994 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-14 00:19:57,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 00:19:58,002 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:19:58,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:19:58,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:58,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:58,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:19:58,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:19:58,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372325219] [2021-07-14 00:19:58,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372325219] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:19:58,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:19:58,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:19:58,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224915182] [2021-07-14 00:19:58,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:19:58,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:19:58,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:19:58,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:19:58,040 INFO L87 Difference]: Start difference. First operand 2360 states and 4990 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2021-07-14 00:19:58,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:19:58,232 INFO L93 Difference]: Finished difference Result 3416 states and 8294 transitions. [2021-07-14 00:19:58,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 00:19:58,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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 [2021-07-14 00:19:58,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:19:58,242 INFO L225 Difference]: With dead ends: 3416 [2021-07-14 00:19:58,242 INFO L226 Difference]: Without dead ends: 2252 [2021-07-14 00:19:58,243 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 145.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:19:58,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-07-14 00:19:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1806. [2021-07-14 00:19:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1757 states have (on average 2.244735344336938) internal successors, (3944), 1805 states have internal predecessors, (3944), 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) [2021-07-14 00:19:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 3944 transitions. [2021-07-14 00:19:58,284 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 3944 transitions. Word has length 49 [2021-07-14 00:19:58,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:19:58,285 INFO L482 AbstractCegarLoop]: Abstraction has 1806 states and 3944 transitions. [2021-07-14 00:19:58,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2021-07-14 00:19:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 3944 transitions. [2021-07-14 00:19:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-14 00:19:58,288 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:19:58,288 INFO L508 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] [2021-07-14 00:19:58,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 00:19:58,288 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:19:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:19:58,289 INFO L82 PathProgramCache]: Analyzing trace with hash -937764168, now seen corresponding path program 1 times [2021-07-14 00:19:58,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:19:58,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048292899] [2021-07-14 00:19:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:19:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:19:58,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:58,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:19:58,350 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-14 00:19:58,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 00:19:58,357 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:19:58,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:19:58,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:58,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:58,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:19:58,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:19:58,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048292899] [2021-07-14 00:19:58,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048292899] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:19:58,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:19:58,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:19:58,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534909028] [2021-07-14 00:19:58,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:19:58,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:19:58,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:19:58,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:19:58,389 INFO L87 Difference]: Start difference. First operand 1806 states and 3944 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2021-07-14 00:19:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:19:58,562 INFO L93 Difference]: Finished difference Result 2750 states and 6755 transitions. [2021-07-14 00:19:58,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 00:19:58,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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 [2021-07-14 00:19:58,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:19:58,570 INFO L225 Difference]: With dead ends: 2750 [2021-07-14 00:19:58,570 INFO L226 Difference]: Without dead ends: 2000 [2021-07-14 00:19:58,570 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 143.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:19:58,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2021-07-14 00:19:58,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1638. [2021-07-14 00:19:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1595 states have (on average 2.2420062695924763) internal successors, (3576), 1637 states have internal predecessors, (3576), 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) [2021-07-14 00:19:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 3576 transitions. [2021-07-14 00:19:58,605 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 3576 transitions. Word has length 49 [2021-07-14 00:19:58,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:19:58,607 INFO L482 AbstractCegarLoop]: Abstraction has 1638 states and 3576 transitions. [2021-07-14 00:19:58,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2021-07-14 00:19:58,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 3576 transitions. [2021-07-14 00:19:58,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-14 00:19:58,609 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:19:58,609 INFO L508 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] [2021-07-14 00:19:58,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 00:19:58,610 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:19:58,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:19:58,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1728864953, now seen corresponding path program 1 times [2021-07-14 00:19:58,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:19:58,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136801066] [2021-07-14 00:19:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:19:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:19:58,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:58,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:19:58,683 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:19:58,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:19:58,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:58,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:58,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:19:58,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:19:58,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136801066] [2021-07-14 00:19:58,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136801066] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:19:58,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:19:58,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 00:19:58,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964756209] [2021-07-14 00:19:58,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 00:19:58,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:19:58,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 00:19:58,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-14 00:19:58,742 INFO L87 Difference]: Start difference. First operand 1638 states and 3576 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-07-14 00:19:58,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:19:58,819 INFO L93 Difference]: Finished difference Result 1858 states and 4283 transitions. [2021-07-14 00:19:58,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 00:19:58,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 51 [2021-07-14 00:19:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:19:58,824 INFO L225 Difference]: With dead ends: 1858 [2021-07-14 00:19:58,824 INFO L226 Difference]: Without dead ends: 1382 [2021-07-14 00:19:58,825 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:19:58,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2021-07-14 00:19:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1368. [2021-07-14 00:19:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1335 states have (on average 2.1992509363295882) internal successors, (2936), 1367 states have internal predecessors, (2936), 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) [2021-07-14 00:19:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2936 transitions. [2021-07-14 00:19:58,847 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2936 transitions. Word has length 51 [2021-07-14 00:19:58,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:19:58,848 INFO L482 AbstractCegarLoop]: Abstraction has 1368 states and 2936 transitions. [2021-07-14 00:19:58,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-07-14 00:19:58,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2936 transitions. [2021-07-14 00:19:58,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-14 00:19:58,849 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:19:58,849 INFO L508 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] [2021-07-14 00:19:58,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-14 00:19:58,850 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:19:58,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:19:58,850 INFO L82 PathProgramCache]: Analyzing trace with hash -947312549, now seen corresponding path program 1 times [2021-07-14 00:19:58,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:19:58,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946776997] [2021-07-14 00:19:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:19:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:19:58,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:58,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:19:58,895 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-07-14 00:19:58,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-14 00:19:58,902 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-07-14 00:19:58,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-14 00:19:58,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:58,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:58,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:58,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:19:58,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:19:58,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946776997] [2021-07-14 00:19:58,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946776997] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:19:58,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:19:58,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:19:58,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167006605] [2021-07-14 00:19:58,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:19:58,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:19:58,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:19:58,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:19:58,933 INFO L87 Difference]: Start difference. First operand 1368 states and 2936 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) [2021-07-14 00:19:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:19:59,078 INFO L93 Difference]: Finished difference Result 2692 states and 6572 transitions. [2021-07-14 00:19:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 00:19:59,079 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 [2021-07-14 00:19:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:19:59,087 INFO L225 Difference]: With dead ends: 2692 [2021-07-14 00:19:59,087 INFO L226 Difference]: Without dead ends: 1876 [2021-07-14 00:19:59,088 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-14 00:19:59,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2021-07-14 00:19:59,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1200. [2021-07-14 00:19:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1175 states have (on average 2.1293617021276594) internal successors, (2502), 1199 states have internal predecessors, (2502), 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) [2021-07-14 00:19:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 2502 transitions. [2021-07-14 00:19:59,114 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 2502 transitions. Word has length 52 [2021-07-14 00:19:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:19:59,114 INFO L482 AbstractCegarLoop]: Abstraction has 1200 states and 2502 transitions. [2021-07-14 00:19:59,115 INFO L483 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) [2021-07-14 00:19:59,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 2502 transitions. [2021-07-14 00:19:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-14 00:19:59,117 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:19:59,117 INFO L508 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, 1] [2021-07-14 00:19:59,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-14 00:19:59,117 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:19:59,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:19:59,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1681251770, now seen corresponding path program 1 times [2021-07-14 00:19:59,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:19:59,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607136962] [2021-07-14 00:19:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:19:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:19:59,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:59,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:19:59,173 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:19:59,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:19:59,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:19:59,196 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:19:59,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:59,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:19:59,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:19:59,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607136962] [2021-07-14 00:19:59,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607136962] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:19:59,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:19:59,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 00:19:59,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799459051] [2021-07-14 00:19:59,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 00:19:59,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:19:59,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 00:19:59,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-14 00:19:59,209 INFO L87 Difference]: Start difference. First operand 1200 states and 2502 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-07-14 00:19:59,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:19:59,304 INFO L93 Difference]: Finished difference Result 1389 states and 2671 transitions. [2021-07-14 00:19:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 00:19:59,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2021-07-14 00:19:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:19:59,308 INFO L225 Difference]: With dead ends: 1389 [2021-07-14 00:19:59,308 INFO L226 Difference]: Without dead ends: 973 [2021-07-14 00:19:59,308 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 67.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-14 00:19:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-07-14 00:19:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 973. [2021-07-14 00:19:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 948 states have (on average 2.1645569620253164) internal successors, (2052), 972 states have internal predecessors, (2052), 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) [2021-07-14 00:19:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 2052 transitions. [2021-07-14 00:19:59,334 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 2052 transitions. Word has length 53 [2021-07-14 00:19:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:19:59,334 INFO L482 AbstractCegarLoop]: Abstraction has 973 states and 2052 transitions. [2021-07-14 00:19:59,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-07-14 00:19:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 2052 transitions. [2021-07-14 00:19:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-14 00:19:59,336 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:19:59,336 INFO L508 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, 1, 1, 1] [2021-07-14 00:19:59,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-14 00:19:59,336 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:19:59,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:19:59,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1615392003, now seen corresponding path program 1 times [2021-07-14 00:19:59,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:19:59,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257108939] [2021-07-14 00:19:59,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:19:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:19:59,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:59,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:19:59,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:19:59,392 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:19:59,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:19:59,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:19:59,421 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:19:59,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:59,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:19:59,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:19:59,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257108939] [2021-07-14 00:19:59,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257108939] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:19:59,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:19:59,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 00:19:59,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498499485] [2021-07-14 00:19:59,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 00:19:59,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:19:59,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 00:19:59,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-14 00:19:59,434 INFO L87 Difference]: Start difference. First operand 973 states and 2052 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-07-14 00:19:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:19:59,520 INFO L93 Difference]: Finished difference Result 785 states and 1437 transitions. [2021-07-14 00:19:59,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 00:19:59,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2021-07-14 00:19:59,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:19:59,522 INFO L225 Difference]: With dead ends: 785 [2021-07-14 00:19:59,522 INFO L226 Difference]: Without dead ends: 489 [2021-07-14 00:19:59,523 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-14 00:19:59,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-07-14 00:19:59,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2021-07-14 00:19:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 468 states have (on average 2.108974358974359) internal successors, (987), 488 states have internal predecessors, (987), 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) [2021-07-14 00:19:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 987 transitions. [2021-07-14 00:19:59,530 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 987 transitions. Word has length 55 [2021-07-14 00:19:59,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:19:59,530 INFO L482 AbstractCegarLoop]: Abstraction has 489 states and 987 transitions. [2021-07-14 00:19:59,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-07-14 00:19:59,530 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 987 transitions. [2021-07-14 00:19:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-14 00:19:59,531 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 00:19:59,531 INFO L508 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, 1, 1, 1, 1, 1] [2021-07-14 00:19:59,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-14 00:19:59,531 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-14 00:19:59,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 00:19:59,531 INFO L82 PathProgramCache]: Analyzing trace with hash -311422210, now seen corresponding path program 1 times [2021-07-14 00:19:59,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 00:19:59,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361518134] [2021-07-14 00:19:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 00:19:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 00:19:59,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:59,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:19:59,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:19:59,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 00:19:59,562 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-07-14 00:19:59,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-07-14 00:19:59,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-14 00:19:59,582 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-14 00:19:59,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-14 00:19:59,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 00:19:59,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 00:19:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 00:19:59,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 00:19:59,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361518134] [2021-07-14 00:19:59,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361518134] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 00:19:59,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 00:19:59,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 00:19:59,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148083341] [2021-07-14 00:19:59,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 00:19:59,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 00:19:59,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 00:19:59,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-14 00:19:59,592 INFO L87 Difference]: Start difference. First operand 489 states and 987 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-07-14 00:19:59,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 00:19:59,647 INFO L93 Difference]: Finished difference Result 180 states and 241 transitions. [2021-07-14 00:19:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 00:19:59,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 57 [2021-07-14 00:19:59,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 00:19:59,648 INFO L225 Difference]: With dead ends: 180 [2021-07-14 00:19:59,648 INFO L226 Difference]: Without dead ends: 0 [2021-07-14 00:19:59,648 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-07-14 00:19:59,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-14 00:19:59,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-14 00:19:59,648 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) [2021-07-14 00:19:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-14 00:19:59,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-07-14 00:19:59,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 00:19:59,648 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-14 00:19:59,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-07-14 00:19:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-14 00:19:59,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 00:19:59,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-14 00:19:59,650 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 00:19:59,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 12:19:59 BasicIcfg [2021-07-14 00:19:59,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 00:19:59,652 INFO L168 Benchmark]: Toolchain (without parser) took 3930.01 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 164.7 MB in the beginning and 117.2 MB in the end (delta: 47.5 MB). Peak memory consumption was 92.6 MB. Max. memory is 8.0 GB. [2021-07-14 00:19:59,652 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 202.4 MB. Free memory is still 182.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 00:19:59,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.02 ms. Allocated memory is still 202.4 MB. Free memory was 164.5 MB in the beginning and 175.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-07-14 00:19:59,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.44 ms. Allocated memory is still 202.4 MB. Free memory was 175.8 MB in the beginning and 173.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-14 00:19:59,653 INFO L168 Benchmark]: Boogie Preprocessor took 26.52 ms. Allocated memory is still 202.4 MB. Free memory was 173.8 MB in the beginning and 172.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 00:19:59,653 INFO L168 Benchmark]: RCFGBuilder took 371.56 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 149.7 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-07-14 00:19:59,653 INFO L168 Benchmark]: TraceAbstraction took 3052.52 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 149.1 MB in the beginning and 117.2 MB in the end (delta: 31.9 MB). Peak memory consumption was 76.9 MB. Max. memory is 8.0 GB. [2021-07-14 00:19:59,654 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 202.4 MB. Free memory is still 182.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 424.02 ms. Allocated memory is still 202.4 MB. Free memory was 164.5 MB in the beginning and 175.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.44 ms. Allocated memory is still 202.4 MB. Free memory was 175.8 MB in the beginning and 173.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.52 ms. Allocated memory is still 202.4 MB. Free memory was 173.8 MB in the beginning and 172.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 371.56 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 149.7 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3052.52 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 149.1 MB in the beginning and 117.2 MB in the end (delta: 31.9 MB). Peak memory consumption was 76.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 18324, positive: 17693, positive conditional: 17693, positive unconditional: 0, negative: 631, negative conditional: 631, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18248, positive: 17693, positive conditional: 0, positive unconditional: 17693, negative: 555, negative conditional: 0, negative unconditional: 555, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 658, positive: 639, positive conditional: 0, positive unconditional: 639, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 658, positive: 635, positive conditional: 0, positive unconditional: 635, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 60, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18248, positive: 17054, positive conditional: 0, positive unconditional: 17054, negative: 536, negative conditional: 0, negative unconditional: 536, unknown: 658, unknown conditional: 0, unknown unconditional: 658] , Statistics on independence cache: Total cache size (in pairs): 658, Positive cache size: 639, Positive conditional cache size: 0, Positive unconditional cache size: 639, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Independence queries for same thread: 76 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2968.4ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 48.0ms, AutomataDifference: 1166.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 463.6ms, PartialOrderReductionTime: 451.9ms, HoareTripleCheckerStatistics: 788 SDtfs, 1051 SDslu, 2423 SDs, 0 SdLazy, 314 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 211.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 861.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5557occurred in iteration=0, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 263.2ms AutomataMinimizationTime, 8 MinimizatonAttempts, 2040 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.2ms SsaConstructionTime, 159.0ms SatisfiabilityAnalysisTime, 709.9ms InterpolantComputationTime, 413 NumberOfCodeBlocks, 413 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 1445 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...