/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:51:09,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:51:09,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:51:09,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 18:51:09,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:51:09,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:51:09,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:51:09,885 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 [2021-07-13 18:51:09,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:51:09,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:51:09,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:51:09,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:51:09,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:51:09,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:51:09,928 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:51:09,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:51:09,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:51:09,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:51:09,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:51:09,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:51:09,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:51:09,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:51:09,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:51:09,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:51:09,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:51:09,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:51:09,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:51:09,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:51:09,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:51:09,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:51:09,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:51:09,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:51:09,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:51:09,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:51:09,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:51:09,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:51:09,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:51:09,932 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:51:09,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:51:09,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:51:10,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:51:10,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:51:10,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:51:10,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:51:10,224 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:51:10,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2021-07-13 18:51:10,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3bb91741/30a050c423e5480e96ceac6e7c31ebc6/FLAGef94ae5cb [2021-07-13 18:51:10,795 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:51:10,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2021-07-13 18:51:10,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3bb91741/30a050c423e5480e96ceac6e7c31ebc6/FLAGef94ae5cb [2021-07-13 18:51:11,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3bb91741/30a050c423e5480e96ceac6e7c31ebc6 [2021-07-13 18:51:11,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:51:11,090 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:51:11,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:51:11,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:51:11,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:51:11,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:51:11" (1/1) ... [2021-07-13 18:51:11,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c50200c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11, skipping insertion in model container [2021-07-13 18:51:11,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:51:11" (1/1) ... [2021-07-13 18:51:11,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:51:11,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:51:11,297 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i[949,962] [2021-07-13 18:51:11,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:51:11,524 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:51:11,535 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i[949,962] [2021-07-13 18:51:11,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:51:11,616 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:51:11,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11 WrapperNode [2021-07-13 18:51:11,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:51:11,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:51:11,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:51:11,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:51:11,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11" (1/1) ... [2021-07-13 18:51:11,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11" (1/1) ... [2021-07-13 18:51:11,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:51:11,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:51:11,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:51:11,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:51:11,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11" (1/1) ... [2021-07-13 18:51:11,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11" (1/1) ... [2021-07-13 18:51:11,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11" (1/1) ... [2021-07-13 18:51:11,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11" (1/1) ... [2021-07-13 18:51:11,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11" (1/1) ... [2021-07-13 18:51:11,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11" (1/1) ... [2021-07-13 18:51:11,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11" (1/1) ... [2021-07-13 18:51:11,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:51:11,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:51:11,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:51:11,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:51:11,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:51:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:51:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-13 18:51:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:51:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:51:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-13 18:51:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-13 18:51:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-13 18:51:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-13 18:51:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-13 18:51:11,796 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-13 18:51:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:51:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-13 18:51:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:51:11,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:51:11,798 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 18:51:12,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:51:12,131 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-13 18:51:12,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:51:12 BoogieIcfgContainer [2021-07-13 18:51:12,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:51:12,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:51:12,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:51:12,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:51:12,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:51:11" (1/3) ... [2021-07-13 18:51:12,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55cbe8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:51:12, skipping insertion in model container [2021-07-13 18:51:12,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:11" (2/3) ... [2021-07-13 18:51:12,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55cbe8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:51:12, skipping insertion in model container [2021-07-13 18:51:12,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:51:12" (3/3) ... [2021-07-13 18:51:12,138 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2021-07-13 18:51:12,143 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:51:12,144 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:51:12,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 18:51:12,144 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:51:12,167 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,167 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,167 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,167 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,168 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,168 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,168 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,168 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,168 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,169 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,169 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,169 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,169 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,169 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,170 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,170 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,170 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,170 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,170 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,170 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,171 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,171 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,171 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,171 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,172 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,172 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,172 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,172 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,172 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,172 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,172 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,173 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,173 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,173 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,173 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,174 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,175 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,176 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,176 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,176 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,180 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,180 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,180 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,181 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,182 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,182 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,183 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,183 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:12,184 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-13 18:51:12,203 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 18:51:12,220 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:51:12,220 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:51:12,220 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:51:12,220 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:51:12,220 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:51:12,220 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:51:12,220 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:51:12,221 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 18:51:12,230 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-07-13 18:51:12,439 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:12,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-13 18:51:12,494 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:12,494 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:12,495 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:12,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:12,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-07-13 18:51:12,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:12,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226523786] [2021-07-13 18:51:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:12,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:12,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226523786] [2021-07-13 18:51:12,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226523786] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:12,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:12,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:51:12,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183786219] [2021-07-13 18:51:12,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:51:12,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:12,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:51:12,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:51:12,976 INFO L87 Difference]: Start difference. First operand has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:13,287 INFO L93 Difference]: Finished difference Result 10568 states and 35667 transitions. [2021-07-13 18:51:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:51:13,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-07-13 18:51:13,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:13,359 INFO L225 Difference]: With dead ends: 10568 [2021-07-13 18:51:13,360 INFO L226 Difference]: Without dead ends: 6290 [2021-07-13 18:51:13,361 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:51:13,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6290 states. [2021-07-13 18:51:13,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6290 to 5000. [2021-07-13 18:51:13,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5000 states, 4999 states have (on average 3.2536507301460293) internal successors, (16265), 4999 states have internal predecessors, (16265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 16265 transitions. [2021-07-13 18:51:13,715 INFO L78 Accepts]: Start accepts. Automaton has 5000 states and 16265 transitions. Word has length 49 [2021-07-13 18:51:13,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:13,719 INFO L482 AbstractCegarLoop]: Abstraction has 5000 states and 16265 transitions. [2021-07-13 18:51:13,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:13,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5000 states and 16265 transitions. [2021-07-13 18:51:13,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-13 18:51:13,777 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:13,777 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:13,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:51:13,778 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:13,779 INFO L82 PathProgramCache]: Analyzing trace with hash -655070883, now seen corresponding path program 1 times [2021-07-13 18:51:13,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:13,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919702363] [2021-07-13 18:51:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:13,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:13,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919702363] [2021-07-13 18:51:13,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919702363] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:13,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:13,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:51:13,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582985995] [2021-07-13 18:51:13,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:51:13,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:13,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:51:13,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:51:13,933 INFO L87 Difference]: Start difference. First operand 5000 states and 16265 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:14,076 INFO L93 Difference]: Finished difference Result 5560 states and 17998 transitions. [2021-07-13 18:51:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:51:14,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-07-13 18:51:14,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:14,101 INFO L225 Difference]: With dead ends: 5560 [2021-07-13 18:51:14,101 INFO L226 Difference]: Without dead ends: 3908 [2021-07-13 18:51:14,103 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:51:14,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2021-07-13 18:51:14,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3816. [2021-07-13 18:51:14,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3815 states have (on average 3.2629095674967235) internal successors, (12448), 3815 states have internal predecessors, (12448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 12448 transitions. [2021-07-13 18:51:14,259 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 12448 transitions. Word has length 51 [2021-07-13 18:51:14,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:14,260 INFO L482 AbstractCegarLoop]: Abstraction has 3816 states and 12448 transitions. [2021-07-13 18:51:14,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 12448 transitions. [2021-07-13 18:51:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-13 18:51:14,271 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:14,271 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:14,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:51:14,271 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:14,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:14,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1597134390, now seen corresponding path program 1 times [2021-07-13 18:51:14,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:14,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364883306] [2021-07-13 18:51:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:14,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:14,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364883306] [2021-07-13 18:51:14,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364883306] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:14,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:14,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:51:14,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241805203] [2021-07-13 18:51:14,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:51:14,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:14,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:51:14,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:51:14,446 INFO L87 Difference]: Start difference. First operand 3816 states and 12448 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:14,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:14,631 INFO L93 Difference]: Finished difference Result 4306 states and 13960 transitions. [2021-07-13 18:51:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:51:14,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-07-13 18:51:14,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:14,653 INFO L225 Difference]: With dead ends: 4306 [2021-07-13 18:51:14,653 INFO L226 Difference]: Without dead ends: 3382 [2021-07-13 18:51:14,654 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:51:14,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2021-07-13 18:51:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3326. [2021-07-13 18:51:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3325 states have (on average 3.2754887218045114) internal successors, (10891), 3325 states have internal predecessors, (10891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:14,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 10891 transitions. [2021-07-13 18:51:14,745 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 10891 transitions. Word has length 53 [2021-07-13 18:51:14,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:14,746 INFO L482 AbstractCegarLoop]: Abstraction has 3326 states and 10891 transitions. [2021-07-13 18:51:14,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 10891 transitions. [2021-07-13 18:51:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-13 18:51:14,754 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:14,755 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:14,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 18:51:14,755 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:14,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:14,757 INFO L82 PathProgramCache]: Analyzing trace with hash -17595096, now seen corresponding path program 1 times [2021-07-13 18:51:14,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:14,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300542277] [2021-07-13 18:51:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:14,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:14,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300542277] [2021-07-13 18:51:14,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300542277] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:14,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:14,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:51:14,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395409840] [2021-07-13 18:51:14,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:51:14,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:14,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:51:14,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:51:14,886 INFO L87 Difference]: Start difference. First operand 3326 states and 10891 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:14,996 INFO L93 Difference]: Finished difference Result 5222 states and 17025 transitions. [2021-07-13 18:51:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 18:51:14,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-07-13 18:51:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:15,027 INFO L225 Difference]: With dead ends: 5222 [2021-07-13 18:51:15,027 INFO L226 Difference]: Without dead ends: 2966 [2021-07-13 18:51:15,030 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 83.5ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:51:15,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2021-07-13 18:51:15,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2966. [2021-07-13 18:51:15,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2965 states have (on average 3.2138279932546374) internal successors, (9529), 2965 states have internal predecessors, (9529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:15,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 9529 transitions. [2021-07-13 18:51:15,153 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 9529 transitions. Word has length 54 [2021-07-13 18:51:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:15,154 INFO L482 AbstractCegarLoop]: Abstraction has 2966 states and 9529 transitions. [2021-07-13 18:51:15,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 9529 transitions. [2021-07-13 18:51:15,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 18:51:15,161 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:15,161 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:15,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:51:15,161 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:15,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:15,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1311085240, now seen corresponding path program 1 times [2021-07-13 18:51:15,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:15,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398110093] [2021-07-13 18:51:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:15,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:15,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398110093] [2021-07-13 18:51:15,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398110093] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:15,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:15,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:51:15,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198272678] [2021-07-13 18:51:15,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:51:15,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:15,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:51:15,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:51:15,317 INFO L87 Difference]: Start difference. First operand 2966 states and 9529 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:15,532 INFO L93 Difference]: Finished difference Result 7050 states and 22447 transitions. [2021-07-13 18:51:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 18:51:15,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-13 18:51:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:15,550 INFO L225 Difference]: With dead ends: 7050 [2021-07-13 18:51:15,550 INFO L226 Difference]: Without dead ends: 4406 [2021-07-13 18:51:15,551 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 215.8ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-07-13 18:51:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2021-07-13 18:51:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 2966. [2021-07-13 18:51:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2965 states have (on average 3.1747048903878583) internal successors, (9413), 2965 states have internal predecessors, (9413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 9413 transitions. [2021-07-13 18:51:15,644 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 9413 transitions. Word has length 55 [2021-07-13 18:51:15,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:15,644 INFO L482 AbstractCegarLoop]: Abstraction has 2966 states and 9413 transitions. [2021-07-13 18:51:15,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:15,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 9413 transitions. [2021-07-13 18:51:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 18:51:15,651 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:15,651 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:15,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 18:51:15,651 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash -423191358, now seen corresponding path program 2 times [2021-07-13 18:51:15,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:15,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027729904] [2021-07-13 18:51:15,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:15,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:15,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027729904] [2021-07-13 18:51:15,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027729904] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:15,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:15,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:51:15,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648736376] [2021-07-13 18:51:15,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:51:15,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:15,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:51:15,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:51:15,787 INFO L87 Difference]: Start difference. First operand 2966 states and 9413 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:15,900 INFO L93 Difference]: Finished difference Result 4310 states and 13777 transitions. [2021-07-13 18:51:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 18:51:15,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-13 18:51:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:15,909 INFO L225 Difference]: With dead ends: 4310 [2021-07-13 18:51:15,909 INFO L226 Difference]: Without dead ends: 2126 [2021-07-13 18:51:15,912 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:51:15,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-07-13 18:51:15,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2126. [2021-07-13 18:51:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2125 states have (on average 3.1218823529411766) internal successors, (6634), 2125 states have internal predecessors, (6634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 6634 transitions. [2021-07-13 18:51:15,976 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 6634 transitions. Word has length 55 [2021-07-13 18:51:15,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:15,977 INFO L482 AbstractCegarLoop]: Abstraction has 2126 states and 6634 transitions. [2021-07-13 18:51:15,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 6634 transitions. [2021-07-13 18:51:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-13 18:51:15,983 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:15,983 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:15,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 18:51:15,984 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:15,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:15,984 INFO L82 PathProgramCache]: Analyzing trace with hash 900432075, now seen corresponding path program 1 times [2021-07-13 18:51:15,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:15,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842338150] [2021-07-13 18:51:15,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:16,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:16,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842338150] [2021-07-13 18:51:16,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842338150] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:16,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:16,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:51:16,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574221207] [2021-07-13 18:51:16,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:51:16,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:16,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:51:16,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:51:16,062 INFO L87 Difference]: Start difference. First operand 2126 states and 6634 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:16,185 INFO L93 Difference]: Finished difference Result 2682 states and 8312 transitions. [2021-07-13 18:51:16,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:51:16,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-07-13 18:51:16,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:16,193 INFO L225 Difference]: With dead ends: 2682 [2021-07-13 18:51:16,194 INFO L226 Difference]: Without dead ends: 1954 [2021-07-13 18:51:16,194 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 90.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:51:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2021-07-13 18:51:16,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1954. [2021-07-13 18:51:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1953 states have (on average 3.0957501280081927) internal successors, (6046), 1953 states have internal predecessors, (6046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 6046 transitions. [2021-07-13 18:51:16,253 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 6046 transitions. Word has length 57 [2021-07-13 18:51:16,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:16,254 INFO L482 AbstractCegarLoop]: Abstraction has 1954 states and 6046 transitions. [2021-07-13 18:51:16,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 6046 transitions. [2021-07-13 18:51:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-13 18:51:16,259 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:16,260 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:16,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 18:51:16,260 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:16,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:16,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2024457130, now seen corresponding path program 1 times [2021-07-13 18:51:16,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:16,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788958714] [2021-07-13 18:51:16,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:16,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:16,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788958714] [2021-07-13 18:51:16,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788958714] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:16,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:16,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:51:16,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123771252] [2021-07-13 18:51:16,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:51:16,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:16,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:51:16,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:51:16,345 INFO L87 Difference]: Start difference. First operand 1954 states and 6046 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:16,483 INFO L93 Difference]: Finished difference Result 2164 states and 6585 transitions. [2021-07-13 18:51:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:51:16,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 58 [2021-07-13 18:51:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:16,489 INFO L225 Difference]: With dead ends: 2164 [2021-07-13 18:51:16,489 INFO L226 Difference]: Without dead ends: 1564 [2021-07-13 18:51:16,489 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:51:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2021-07-13 18:51:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1564. [2021-07-13 18:51:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1563 states have (on average 3.00127959053103) internal successors, (4691), 1563 states have internal predecessors, (4691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 4691 transitions. [2021-07-13 18:51:16,525 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 4691 transitions. Word has length 58 [2021-07-13 18:51:16,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:16,526 INFO L482 AbstractCegarLoop]: Abstraction has 1564 states and 4691 transitions. [2021-07-13 18:51:16,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 4691 transitions. [2021-07-13 18:51:16,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-13 18:51:16,529 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:16,530 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:16,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 18:51:16,530 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:16,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:16,530 INFO L82 PathProgramCache]: Analyzing trace with hash 51104949, now seen corresponding path program 1 times [2021-07-13 18:51:16,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:16,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904915945] [2021-07-13 18:51:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:16,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:16,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904915945] [2021-07-13 18:51:16,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904915945] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:16,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:16,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:51:16,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378004783] [2021-07-13 18:51:16,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:51:16,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:16,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:51:16,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:51:16,607 INFO L87 Difference]: Start difference. First operand 1564 states and 4691 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:16,746 INFO L93 Difference]: Finished difference Result 1393 states and 4058 transitions. [2021-07-13 18:51:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 18:51:16,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 59 [2021-07-13 18:51:16,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:16,750 INFO L225 Difference]: With dead ends: 1393 [2021-07-13 18:51:16,750 INFO L226 Difference]: Without dead ends: 1033 [2021-07-13 18:51:16,750 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:51:16,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-07-13 18:51:16,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 985. [2021-07-13 18:51:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 984 states have (on average 2.8140243902439024) internal successors, (2769), 984 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 2769 transitions. [2021-07-13 18:51:16,770 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 2769 transitions. Word has length 59 [2021-07-13 18:51:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:16,770 INFO L482 AbstractCegarLoop]: Abstraction has 985 states and 2769 transitions. [2021-07-13 18:51:16,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,770 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 2769 transitions. [2021-07-13 18:51:16,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-13 18:51:16,772 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:16,772 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:16,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 18:51:16,773 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:16,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:16,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1986646814, now seen corresponding path program 1 times [2021-07-13 18:51:16,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:16,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880084114] [2021-07-13 18:51:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:16,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:16,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880084114] [2021-07-13 18:51:16,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880084114] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:16,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:16,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:51:16,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983271165] [2021-07-13 18:51:16,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:51:16,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:16,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:51:16,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:51:16,854 INFO L87 Difference]: Start difference. First operand 985 states and 2769 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:16,951 INFO L93 Difference]: Finished difference Result 991 states and 2788 transitions. [2021-07-13 18:51:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 18:51:16,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-07-13 18:51:16,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:16,952 INFO L225 Difference]: With dead ends: 991 [2021-07-13 18:51:16,952 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 18:51:16,952 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:51:16,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 18:51:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 18:51:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 18:51:16,953 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-07-13 18:51:16,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:16,953 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 18:51:16,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:16,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 18:51:16,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:51:16,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 18:51:16,955 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 18:51:16,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:51:16 BasicIcfg [2021-07-13 18:51:16,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 18:51:16,958 INFO L168 Benchmark]: Toolchain (without parser) took 5867.47 ms. Allocated memory was 183.5 MB in the beginning and 618.7 MB in the end (delta: 435.2 MB). Free memory was 146.7 MB in the beginning and 359.5 MB in the end (delta: -212.8 MB). Peak memory consumption was 223.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:16,958 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 183.5 MB. Free memory is still 164.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 18:51:16,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 525.72 ms. Allocated memory is still 183.5 MB. Free memory was 146.5 MB in the beginning and 157.7 MB in the end (delta: -11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:16,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.01 ms. Allocated memory is still 183.5 MB. Free memory was 157.7 MB in the beginning and 155.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:16,959 INFO L168 Benchmark]: Boogie Preprocessor took 33.30 ms. Allocated memory is still 183.5 MB. Free memory was 155.6 MB in the beginning and 154.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:16,959 INFO L168 Benchmark]: RCFGBuilder took 422.70 ms. Allocated memory is still 183.5 MB. Free memory was 154.0 MB in the beginning and 130.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:16,959 INFO L168 Benchmark]: TraceAbstraction took 4823.17 ms. Allocated memory was 183.5 MB in the beginning and 618.7 MB in the end (delta: 435.2 MB). Free memory was 129.9 MB in the beginning and 359.5 MB in the end (delta: -229.5 MB). Peak memory consumption was 206.7 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:16,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 183.5 MB. Free memory is still 164.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 525.72 ms. Allocated memory is still 183.5 MB. Free memory was 146.5 MB in the beginning and 157.7 MB in the end (delta: -11.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.01 ms. Allocated memory is still 183.5 MB. Free memory was 157.7 MB in the beginning and 155.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.30 ms. Allocated memory is still 183.5 MB. Free memory was 155.6 MB in the beginning and 154.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 422.70 ms. Allocated memory is still 183.5 MB. Free memory was 154.0 MB in the beginning and 130.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4823.17 ms. Allocated memory was 183.5 MB in the beginning and 618.7 MB in the end (delta: 435.2 MB). Free memory was 129.9 MB in the beginning and 359.5 MB in the end (delta: -229.5 MB). Peak memory consumption was 206.7 MB. Max. memory is 8.0 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4736.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 159.5ms, AutomataDifference: 1817.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 218.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1051 SDtfs, 1367 SDslu, 3384 SDs, 0 SdLazy, 389 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 305.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1188.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5559occurred in iteration=0, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 985.8ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2926 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.8ms SsaConstructionTime, 218.0ms SatisfiabilityAnalysisTime, 1061.9ms InterpolantComputationTime, 552 NumberOfCodeBlocks, 552 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 542 ConstructedInterpolants, 0 QuantifiedInterpolants, 2134 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...