/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:00:07,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:00:07,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:00:07,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 01:00:07,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 01:00:07,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 01:00:07,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 01:00:07,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-04-15 01:00:07,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:00:07,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:00:07,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:00:07,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:00:07,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:00:07,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:00:07,164 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:00:07,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:00:07,164 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:00:07,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:00:07,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:00:07,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:00:07,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:00:07,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:00:07,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:00:07,165 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:00:07,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:00:07,165 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:00:07,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:00:07,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:00:07,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:00:07,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:00:07,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:00:07,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:00:07,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:00:07,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:00:07,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:00:07,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:00:07,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:00:07,166 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:00:07,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:00:07,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:00:07,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:00:07,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:00:07,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:00:07,414 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 01:00:07,414 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 01:00:07,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2021-04-15 01:00:07,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3b1b3df8/408a632d88f54283b92df68ee34e1e25/FLAG4edce6ae7 [2021-04-15 01:00:07,886 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 01:00:07,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2021-04-15 01:00:07,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3b1b3df8/408a632d88f54283b92df68ee34e1e25/FLAG4edce6ae7 [2021-04-15 01:00:07,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3b1b3df8/408a632d88f54283b92df68ee34e1e25 [2021-04-15 01:00:07,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:00:07,906 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 01:00:07,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 01:00:07,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 01:00:07,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 01:00:07,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:00:07" (1/1) ... [2021-04-15 01:00:07,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3bfd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:07, skipping insertion in model container [2021-04-15 01:00:07,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:00:07" (1/1) ... [2021-04-15 01:00:07,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 01:00:07,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 01:00:08,057 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i[949,962] [2021-04-15 01:00:08,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:00:08,195 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 01:00:08,202 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i[949,962] [2021-04-15 01:00:08,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:00:08,264 INFO L208 MainTranslator]: Completed translation [2021-04-15 01:00:08,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08 WrapperNode [2021-04-15 01:00:08,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 01:00:08,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:00:08,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:00:08,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:00:08,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08" (1/1) ... [2021-04-15 01:00:08,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08" (1/1) ... [2021-04-15 01:00:08,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:00:08,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:00:08,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:00:08,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:00:08,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08" (1/1) ... [2021-04-15 01:00:08,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08" (1/1) ... [2021-04-15 01:00:08,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08" (1/1) ... [2021-04-15 01:00:08,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08" (1/1) ... [2021-04-15 01:00:08,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08" (1/1) ... [2021-04-15 01:00:08,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08" (1/1) ... [2021-04-15 01:00:08,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08" (1/1) ... [2021-04-15 01:00:08,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:00:08,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:00:08,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:00:08,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:00:08,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:00:08,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 01:00:08,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-15 01:00:08,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 01:00:08,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 01:00:08,350 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-15 01:00:08,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-15 01:00:08,352 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-15 01:00:08,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-15 01:00:08,352 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-15 01:00:08,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-15 01:00:08,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 01:00:08,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-15 01:00:08,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:00:08,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:00:08,354 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 01:00:08,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:00:08,615 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-15 01:00:08,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:00:08 BoogieIcfgContainer [2021-04-15 01:00:08,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:00:08,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:00:08,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:00:08,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:00:08,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:00:07" (1/3) ... [2021-04-15 01:00:08,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b28859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:00:08, skipping insertion in model container [2021-04-15 01:00:08,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:08" (2/3) ... [2021-04-15 01:00:08,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b28859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:00:08, skipping insertion in model container [2021-04-15 01:00:08,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:00:08" (3/3) ... [2021-04-15 01:00:08,621 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2021-04-15 01:00:08,625 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 01:00:08,625 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:00:08,628 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 01:00:08,629 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 01:00:08,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,647 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,647 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,648 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,648 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,651 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,651 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,651 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,652 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,654 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,655 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,655 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,655 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,656 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,656 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,656 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,656 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:08,657 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-15 01:00:08,668 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-15 01:00:08,680 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:00:08,681 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:00:08,681 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:00:08,681 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:00:08,681 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:00:08,681 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:00:08,681 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:00:08,681 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:00:08,687 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-04-15 01:00:09,098 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:09,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-04-15 01:00:09,159 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:09,160 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:09,160 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:09,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:09,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1780672703, now seen corresponding path program 1 times [2021-04-15 01:00:09,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:09,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146179351] [2021-04-15 01:00:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:09,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146179351] [2021-04-15 01:00:09,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:09,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:00:09,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519368252] [2021-04-15 01:00:09,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:00:09,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:09,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:00:09,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:00:09,557 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:09,957 INFO L93 Difference]: Finished difference Result 18580 states and 63964 transitions. [2021-04-15 01:00:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:00:09,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-04-15 01:00:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:10,003 INFO L225 Difference]: With dead ends: 18580 [2021-04-15 01:00:10,004 INFO L226 Difference]: Without dead ends: 5950 [2021-04-15 01:00:10,005 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 211.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:00:10,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5950 states. [2021-04-15 01:00:10,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5950 to 4876. [2021-04-15 01:00:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4875 states have (on average 3.358974358974359) internal successors, (16375), 4875 states have internal predecessors, (16375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 16375 transitions. [2021-04-15 01:00:10,279 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 16375 transitions. Word has length 40 [2021-04-15 01:00:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:10,280 INFO L480 AbstractCegarLoop]: Abstraction has 4876 states and 16375 transitions. [2021-04-15 01:00:10,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 16375 transitions. [2021-04-15 01:00:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-04-15 01:00:10,291 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:10,292 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:10,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:00:10,296 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:10,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:10,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1597800416, now seen corresponding path program 1 times [2021-04-15 01:00:10,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:10,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197977404] [2021-04-15 01:00:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:10,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197977404] [2021-04-15 01:00:10,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:10,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:00:10,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346575261] [2021-04-15 01:00:10,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:00:10,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:10,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:00:10,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:00:10,442 INFO L87 Difference]: Start difference. First operand 4876 states and 16375 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:10,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:10,776 INFO L93 Difference]: Finished difference Result 7985 states and 26430 transitions. [2021-04-15 01:00:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-04-15 01:00:10,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-04-15 01:00:10,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:10,802 INFO L225 Difference]: With dead ends: 7985 [2021-04-15 01:00:10,802 INFO L226 Difference]: Without dead ends: 6005 [2021-04-15 01:00:10,803 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 195.2ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-04-15 01:00:10,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6005 states. [2021-04-15 01:00:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6005 to 4820. [2021-04-15 01:00:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 4819 states have (on average 3.34571487860552) internal successors, (16123), 4819 states have internal predecessors, (16123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 16123 transitions. [2021-04-15 01:00:10,937 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 16123 transitions. Word has length 42 [2021-04-15 01:00:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:10,938 INFO L480 AbstractCegarLoop]: Abstraction has 4820 states and 16123 transitions. [2021-04-15 01:00:10,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 16123 transitions. [2021-04-15 01:00:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-04-15 01:00:10,948 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:10,949 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:10,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 01:00:10,949 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:10,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:10,954 INFO L82 PathProgramCache]: Analyzing trace with hash 140625889, now seen corresponding path program 1 times [2021-04-15 01:00:10,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:10,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502246214] [2021-04-15 01:00:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:11,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502246214] [2021-04-15 01:00:11,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:11,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:00:11,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964508459] [2021-04-15 01:00:11,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:00:11,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:11,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:00:11,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:00:11,064 INFO L87 Difference]: Start difference. First operand 4820 states and 16123 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:11,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:11,236 INFO L93 Difference]: Finished difference Result 6646 states and 21901 transitions. [2021-04-15 01:00:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 01:00:11,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-04-15 01:00:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:11,258 INFO L225 Difference]: With dead ends: 6646 [2021-04-15 01:00:11,258 INFO L226 Difference]: Without dead ends: 3026 [2021-04-15 01:00:11,259 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 144.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:00:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2021-04-15 01:00:11,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2618. [2021-04-15 01:00:11,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2617 states have (on average 3.2361482613679784) internal successors, (8469), 2617 states have internal predecessors, (8469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 8469 transitions. [2021-04-15 01:00:11,311 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 8469 transitions. Word has length 44 [2021-04-15 01:00:11,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:11,311 INFO L480 AbstractCegarLoop]: Abstraction has 2618 states and 8469 transitions. [2021-04-15 01:00:11,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 8469 transitions. [2021-04-15 01:00:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-04-15 01:00:11,315 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:11,315 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:11,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 01:00:11,315 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:11,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:11,317 INFO L82 PathProgramCache]: Analyzing trace with hash -2033082139, now seen corresponding path program 1 times [2021-04-15 01:00:11,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:11,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973332933] [2021-04-15 01:00:11,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:11,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973332933] [2021-04-15 01:00:11,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:11,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:00:11,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186231962] [2021-04-15 01:00:11,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:00:11,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:11,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:00:11,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:00:11,426 INFO L87 Difference]: Start difference. First operand 2618 states and 8469 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:11,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:11,623 INFO L93 Difference]: Finished difference Result 3648 states and 11626 transitions. [2021-04-15 01:00:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:00:11,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2021-04-15 01:00:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:11,632 INFO L225 Difference]: With dead ends: 3648 [2021-04-15 01:00:11,632 INFO L226 Difference]: Without dead ends: 2832 [2021-04-15 01:00:11,632 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:00:11,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-04-15 01:00:11,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2378. [2021-04-15 01:00:11,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2378 states, 2377 states have (on average 3.2179217501051744) internal successors, (7649), 2377 states have internal predecessors, (7649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 7649 transitions. [2021-04-15 01:00:11,683 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 7649 transitions. Word has length 45 [2021-04-15 01:00:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:11,684 INFO L480 AbstractCegarLoop]: Abstraction has 2378 states and 7649 transitions. [2021-04-15 01:00:11,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 7649 transitions. [2021-04-15 01:00:11,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-15 01:00:11,687 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:11,687 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:11,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 01:00:11,688 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:11,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:11,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1941365722, now seen corresponding path program 1 times [2021-04-15 01:00:11,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:11,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046707669] [2021-04-15 01:00:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:11,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046707669] [2021-04-15 01:00:11,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:11,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:00:11,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296255203] [2021-04-15 01:00:11,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:00:11,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:00:11,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:00:11,789 INFO L87 Difference]: Start difference. First operand 2378 states and 7649 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:12,057 INFO L93 Difference]: Finished difference Result 4748 states and 15067 transitions. [2021-04-15 01:00:12,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-04-15 01:00:12,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-04-15 01:00:12,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:12,064 INFO L225 Difference]: With dead ends: 4748 [2021-04-15 01:00:12,064 INFO L226 Difference]: Without dead ends: 2642 [2021-04-15 01:00:12,065 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 202.6ms TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2021-04-15 01:00:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-04-15 01:00:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2230. [2021-04-15 01:00:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 2229 states have (on average 3.196052041274114) internal successors, (7124), 2229 states have internal predecessors, (7124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 7124 transitions. [2021-04-15 01:00:12,101 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 7124 transitions. Word has length 47 [2021-04-15 01:00:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:12,101 INFO L480 AbstractCegarLoop]: Abstraction has 2230 states and 7124 transitions. [2021-04-15 01:00:12,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 7124 transitions. [2021-04-15 01:00:12,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-04-15 01:00:12,104 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:12,104 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:12,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-15 01:00:12,104 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:12,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:12,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1765960948, now seen corresponding path program 1 times [2021-04-15 01:00:12,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:12,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238305320] [2021-04-15 01:00:12,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:12,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238305320] [2021-04-15 01:00:12,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:12,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 01:00:12,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106319531] [2021-04-15 01:00:12,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:00:12,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:12,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:00:12,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:00:12,180 INFO L87 Difference]: Start difference. First operand 2230 states and 7124 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:12,262 INFO L93 Difference]: Finished difference Result 2970 states and 9361 transitions. [2021-04-15 01:00:12,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:00:12,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-04-15 01:00:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:12,267 INFO L225 Difference]: With dead ends: 2970 [2021-04-15 01:00:12,268 INFO L226 Difference]: Without dead ends: 2018 [2021-04-15 01:00:12,268 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 58.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:00:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2021-04-15 01:00:12,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2018. [2021-04-15 01:00:12,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2017 states have (on average 3.14873574615766) internal successors, (6351), 2017 states have internal predecessors, (6351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 6351 transitions. [2021-04-15 01:00:12,298 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 6351 transitions. Word has length 48 [2021-04-15 01:00:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:12,298 INFO L480 AbstractCegarLoop]: Abstraction has 2018 states and 6351 transitions. [2021-04-15 01:00:12,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 6351 transitions. [2021-04-15 01:00:12,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-04-15 01:00:12,301 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:12,301 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:12,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-15 01:00:12,302 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:12,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:12,302 INFO L82 PathProgramCache]: Analyzing trace with hash 940321639, now seen corresponding path program 1 times [2021-04-15 01:00:12,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:12,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949731446] [2021-04-15 01:00:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:12,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949731446] [2021-04-15 01:00:12,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:12,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:00:12,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631070290] [2021-04-15 01:00:12,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:00:12,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:12,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:00:12,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:00:12,380 INFO L87 Difference]: Start difference. First operand 2018 states and 6351 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) [2021-04-15 01:00:12,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:12,472 INFO L93 Difference]: Finished difference Result 2270 states and 6966 transitions. [2021-04-15 01:00:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 01:00:12,473 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 [2021-04-15 01:00:12,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:12,476 INFO L225 Difference]: With dead ends: 2270 [2021-04-15 01:00:12,476 INFO L226 Difference]: Without dead ends: 1478 [2021-04-15 01:00:12,477 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 74.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-04-15 01:00:12,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2021-04-15 01:00:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1478. [2021-04-15 01:00:12,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.010155721056195) internal successors, (4446), 1477 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 4446 transitions. [2021-04-15 01:00:12,518 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 4446 transitions. Word has length 49 [2021-04-15 01:00:12,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:12,518 INFO L480 AbstractCegarLoop]: Abstraction has 1478 states and 4446 transitions. [2021-04-15 01:00:12,519 INFO L481 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) [2021-04-15 01:00:12,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 4446 transitions. [2021-04-15 01:00:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-04-15 01:00:12,521 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:12,521 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:12,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-15 01:00:12,521 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:12,521 INFO L82 PathProgramCache]: Analyzing trace with hash 817305196, now seen corresponding path program 1 times [2021-04-15 01:00:12,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:12,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582468875] [2021-04-15 01:00:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:12,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582468875] [2021-04-15 01:00:12,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:12,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:00:12,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830314858] [2021-04-15 01:00:12,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:00:12,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:12,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:00:12,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:00:12,606 INFO L87 Difference]: Start difference. First operand 1478 states and 4446 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:12,701 INFO L93 Difference]: Finished difference Result 1289 states and 3762 transitions. [2021-04-15 01:00:12,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 01:00:12,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 50 [2021-04-15 01:00:12,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:12,703 INFO L225 Difference]: With dead ends: 1289 [2021-04-15 01:00:12,703 INFO L226 Difference]: Without dead ends: 665 [2021-04-15 01:00:12,703 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:00:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-04-15 01:00:12,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2021-04-15 01:00:12,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 664 states have (on average 2.8268072289156625) internal successors, (1877), 664 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1877 transitions. [2021-04-15 01:00:12,712 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1877 transitions. Word has length 50 [2021-04-15 01:00:12,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:12,712 INFO L480 AbstractCegarLoop]: Abstraction has 665 states and 1877 transitions. [2021-04-15 01:00:12,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,712 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1877 transitions. [2021-04-15 01:00:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-15 01:00:12,713 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:12,714 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:12,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-15 01:00:12,714 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:12,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:12,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1238845305, now seen corresponding path program 1 times [2021-04-15 01:00:12,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:12,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81505029] [2021-04-15 01:00:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:12,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81505029] [2021-04-15 01:00:12,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:12,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:00:12,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687152270] [2021-04-15 01:00:12,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:00:12,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:12,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:00:12,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:00:12,803 INFO L87 Difference]: Start difference. First operand 665 states and 1877 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:12,860 INFO L93 Difference]: Finished difference Result 1068 states and 3054 transitions. [2021-04-15 01:00:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:00:12,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-04-15 01:00:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:12,862 INFO L225 Difference]: With dead ends: 1068 [2021-04-15 01:00:12,862 INFO L226 Difference]: Without dead ends: 637 [2021-04-15 01:00:12,862 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-04-15 01:00:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-04-15 01:00:12,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2021-04-15 01:00:12,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 2.809748427672956) internal successors, (1787), 636 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1787 transitions. [2021-04-15 01:00:12,870 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1787 transitions. Word has length 52 [2021-04-15 01:00:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:12,870 INFO L480 AbstractCegarLoop]: Abstraction has 637 states and 1787 transitions. [2021-04-15 01:00:12,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1787 transitions. [2021-04-15 01:00:12,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-15 01:00:12,871 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:12,871 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:12,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-15 01:00:12,871 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:12,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:12,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2068779749, now seen corresponding path program 2 times [2021-04-15 01:00:12,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:12,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664723306] [2021-04-15 01:00:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:12,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664723306] [2021-04-15 01:00:12,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:12,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:00:12,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515315458] [2021-04-15 01:00:12,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:00:12,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:12,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:00:12,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:00:12,947 INFO L87 Difference]: Start difference. First operand 637 states and 1787 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:13,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:13,019 INFO L93 Difference]: Finished difference Result 583 states and 1625 transitions. [2021-04-15 01:00:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 01:00:13,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-04-15 01:00:13,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:13,020 INFO L225 Difference]: With dead ends: 583 [2021-04-15 01:00:13,024 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 01:00:13,025 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 73.6ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-04-15 01:00:13,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 01:00:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 01:00:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 01:00:13,025 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-04-15 01:00:13,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:13,025 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 01:00:13,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:13,025 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 01:00:13,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 01:00:13,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-15 01:00:13,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:00:13 BasicIcfg [2021-04-15 01:00:13,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:00:13,029 INFO L168 Benchmark]: Toolchain (without parser) took 5123.05 ms. Allocated memory was 335.5 MB in the beginning and 801.1 MB in the end (delta: 465.6 MB). Free memory was 298.9 MB in the beginning and 523.6 MB in the end (delta: -224.7 MB). Peak memory consumption was 242.4 MB. Max. memory is 16.0 GB. [2021-04-15 01:00:13,029 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 335.5 MB. Free memory was 316.9 MB in the beginning and 316.8 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:00:13,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.95 ms. Allocated memory is still 335.5 MB. Free memory was 298.7 MB in the beginning and 297.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. [2021-04-15 01:00:13,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.27 ms. Allocated memory is still 335.5 MB. Free memory was 297.6 MB in the beginning and 295.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:00:13,031 INFO L168 Benchmark]: Boogie Preprocessor took 13.23 ms. Allocated memory is still 335.5 MB. Free memory was 295.5 MB in the beginning and 294.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:00:13,032 INFO L168 Benchmark]: RCFGBuilder took 313.44 ms. Allocated memory is still 335.5 MB. Free memory was 294.5 MB in the beginning and 269.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-04-15 01:00:13,033 INFO L168 Benchmark]: TraceAbstraction took 4411.45 ms. Allocated memory was 335.5 MB in the beginning and 801.1 MB in the end (delta: 465.6 MB). Free memory was 269.3 MB in the beginning and 523.6 MB in the end (delta: -254.2 MB). Peak memory consumption was 212.4 MB. Max. memory is 16.0 GB. [2021-04-15 01:00:13,037 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 335.5 MB. Free memory was 316.9 MB in the beginning and 316.8 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 357.95 ms. Allocated memory is still 335.5 MB. Free memory was 298.7 MB in the beginning and 297.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.27 ms. Allocated memory is still 335.5 MB. Free memory was 297.6 MB in the beginning and 295.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.23 ms. Allocated memory is still 335.5 MB. Free memory was 295.5 MB in the beginning and 294.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 313.44 ms. Allocated memory is still 335.5 MB. Free memory was 294.5 MB in the beginning and 269.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4411.45 ms. Allocated memory was 335.5 MB in the beginning and 801.1 MB in the end (delta: 465.6 MB). Free memory was 269.3 MB in the beginning and 523.6 MB in the end (delta: -254.2 MB). Peak memory consumption was 212.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4347.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 97.1ms, AutomataDifference: 1944.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 416.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 963 SDtfs, 1778 SDslu, 3624 SDs, 0 SdLazy, 524 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 321.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1266.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 624.4ms AutomataMinimizationTime, 10 MinimizatonAttempts, 3533 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.4ms SsaConstructionTime, 179.5ms SatisfiabilityAnalysisTime, 877.2ms InterpolantComputationTime, 469 NumberOfCodeBlocks, 469 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 459 ConstructedInterpolants, 0 QuantifiedInterpolants, 2273 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...