/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:21:19,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:21:19,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:21:19,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:21:19,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:21:19,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:21:19,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:21:19,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:21:19,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:21:19,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:21:19,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:21:19,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:21:19,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:21:19,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:21:19,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:21:19,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:21:19,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:21:19,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:21:19,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:21:19,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:21:19,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:21:19,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:21:19,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:21:19,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:21:19,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 11:21:19,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:21:19,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:21:19,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:21:19,815 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-SemanticLbe.epf [2021-03-11 11:21:19,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:21:19,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:21:19,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:21:19,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:21:19,852 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:21:19,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:21:19,853 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:21:19,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:21:19,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:21:19,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:21:19,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:21:19,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:21:19,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:21:19,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:21:19,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:21:19,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:21:19,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:21:19,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:21:19,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:21:19,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:21:19,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:21:19,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:21:19,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:21:19,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:21:19,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:21:19,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:21:19,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:21:19,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:21:19,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:21:20,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:21:20,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:21:20,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:21:20,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:21:20,156 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:21:20,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2021-03-11 11:21:20,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acb67f594/fa5d489c57ae4f51b3286916a59def41/FLAG3044e9348 [2021-03-11 11:21:20,749 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:21:20,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i [2021-03-11 11:21:20,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acb67f594/fa5d489c57ae4f51b3286916a59def41/FLAG3044e9348 [2021-03-11 11:21:21,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acb67f594/fa5d489c57ae4f51b3286916a59def41 [2021-03-11 11:21:21,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:21:21,215 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:21:21,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:21:21,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:21:21,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:21:21,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:21:21" (1/1) ... [2021-03-11 11:21:21,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@643c8704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21, skipping insertion in model container [2021-03-11 11:21:21,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:21:21" (1/1) ... [2021-03-11 11:21:21,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:21:21,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:21:21,413 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i[950,963] [2021-03-11 11:21:21,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:21:21,520 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:21:21,530 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.oepc.i[950,963] [2021-03-11 11:21:21,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:21:21,629 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:21:21,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21 WrapperNode [2021-03-11 11:21:21,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:21:21,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:21:21,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:21:21,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:21:21,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21" (1/1) ... [2021-03-11 11:21:21,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21" (1/1) ... [2021-03-11 11:21:21,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:21:21,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:21:21,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:21:21,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:21:21,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21" (1/1) ... [2021-03-11 11:21:21,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21" (1/1) ... [2021-03-11 11:21:21,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21" (1/1) ... [2021-03-11 11:21:21,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21" (1/1) ... [2021-03-11 11:21:21,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21" (1/1) ... [2021-03-11 11:21:21,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21" (1/1) ... [2021-03-11 11:21:21,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21" (1/1) ... [2021-03-11 11:21:21,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:21:21,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:21:21,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:21:21,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:21:21,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:21:21,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:21:21,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:21:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:21:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:21:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:21:21,776 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:21:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:21:21,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:21:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 11:21:21,777 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 11:21:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:21:21,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:21:21,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:21:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:21:21,779 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:21:22,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:21:22,138 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:21:22,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:21:22 BoogieIcfgContainer [2021-03-11 11:21:22,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:21:22,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:21:22,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:21:22,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:21:22,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:21:21" (1/3) ... [2021-03-11 11:21:22,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2b12b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:21:22, skipping insertion in model container [2021-03-11 11:21:22,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:21:21" (2/3) ... [2021-03-11 11:21:22,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2b12b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:21:22, skipping insertion in model container [2021-03-11 11:21:22,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:21:22" (3/3) ... [2021-03-11 11:21:22,146 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2021-03-11 11:21:22,151 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:21:22,151 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:21:22,154 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:21:22,155 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:21:22,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,185 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,185 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,186 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,187 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,187 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,188 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,188 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,191 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,191 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,194 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,195 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,195 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,202 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,202 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,202 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,202 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,204 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,204 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,205 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,205 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:21:22,206 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:21:22,220 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 11:21:22,244 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:21:22,244 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:21:22,244 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:21:22,245 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:21:22,245 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:21:22,245 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:21:22,245 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:21:22,245 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:21:22,262 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:21:22,279 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 76 transitions, 167 flow [2021-03-11 11:21:22,281 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 76 transitions, 167 flow [2021-03-11 11:21:22,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-03-11 11:21:22,338 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-03-11 11:21:22,338 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:21:22,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 11:21:22,344 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-03-11 11:21:24,741 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-11 11:21:24,946 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-11 11:21:25,009 INFO L131 LiptonReduction]: Checked pairs total: 2521 [2021-03-11 11:21:25,009 INFO L133 LiptonReduction]: Total number of compositions: 63 [2021-03-11 11:21:25,015 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-03-11 11:21:25,038 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 11:21:25,044 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:25,045 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:25,045 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:25,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:25,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1270555379, now seen corresponding path program 1 times [2021-03-11 11:21:25,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:25,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227115021] [2021-03-11 11:21:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:25,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:25,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:21:25,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:25,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:21:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:25,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227115021] [2021-03-11 11:21:25,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:25,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:21:25,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222138628] [2021-03-11 11:21:25,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 11:21:25,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:25,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 11:21:25,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:21:25,193 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:25,214 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-03-11 11:21:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 11:21:25,215 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-03-11 11:21:25,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:25,225 INFO L225 Difference]: With dead ends: 362 [2021-03-11 11:21:25,225 INFO L226 Difference]: Without dead ends: 298 [2021-03-11 11:21:25,226 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:21:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-03-11 11:21:25,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-03-11 11:21:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-03-11 11:21:25,273 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-03-11 11:21:25,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:25,274 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-03-11 11:21:25,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-03-11 11:21:25,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-03-11 11:21:25,275 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:25,275 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:25,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:21:25,276 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:25,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:25,276 INFO L82 PathProgramCache]: Analyzing trace with hash -732514406, now seen corresponding path program 1 times [2021-03-11 11:21:25,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:25,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337080545] [2021-03-11 11:21:25,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:25,406 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:21:25,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:21:25,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:21:25,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:21:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:25,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337080545] [2021-03-11 11:21:25,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:25,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:21:25,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541129918] [2021-03-11 11:21:25,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:21:25,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:25,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:21:25,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:21:25,423 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:25,463 INFO L93 Difference]: Finished difference Result 354 states and 982 transitions. [2021-03-11 11:21:25,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:21:25,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-03-11 11:21:25,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:25,472 INFO L225 Difference]: With dead ends: 354 [2021-03-11 11:21:25,472 INFO L226 Difference]: Without dead ends: 290 [2021-03-11 11:21:25,472 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-03-11 11:21:25,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-03-11 11:21:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.885813148788927) internal successors, (834), 289 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 834 transitions. [2021-03-11 11:21:25,502 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 834 transitions. Word has length 9 [2021-03-11 11:21:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:25,502 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 834 transitions. [2021-03-11 11:21:25,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 834 transitions. [2021-03-11 11:21:25,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:21:25,505 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:25,505 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:25,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:21:25,505 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:25,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:25,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1824891242, now seen corresponding path program 1 times [2021-03-11 11:21:25,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:25,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932822092] [2021-03-11 11:21:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:25,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:25,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:25,594 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:21:25,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:21:25,603 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:21:25,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:21:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:25,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932822092] [2021-03-11 11:21:25,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:25,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:21:25,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147463224] [2021-03-11 11:21:25,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:21:25,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:25,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:21:25,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:25,613 INFO L87 Difference]: Start difference. First operand 290 states and 834 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:25,684 INFO L93 Difference]: Finished difference Result 390 states and 1093 transitions. [2021-03-11 11:21:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 11:21:25,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-03-11 11:21:25,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:25,693 INFO L225 Difference]: With dead ends: 390 [2021-03-11 11:21:25,693 INFO L226 Difference]: Without dead ends: 330 [2021-03-11 11:21:25,693 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 48.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:21:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-03-11 11:21:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 306. [2021-03-11 11:21:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 2.865573770491803) internal successors, (874), 305 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 874 transitions. [2021-03-11 11:21:25,724 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 874 transitions. Word has length 10 [2021-03-11 11:21:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:25,724 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 874 transitions. [2021-03-11 11:21:25,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 874 transitions. [2021-03-11 11:21:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:21:25,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:25,725 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:25,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:21:25,725 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:25,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:25,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1234732712, now seen corresponding path program 1 times [2021-03-11 11:21:25,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:25,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089748064] [2021-03-11 11:21:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:25,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:25,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:25,785 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:21:25,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:21:25,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:21:25,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:21:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:25,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089748064] [2021-03-11 11:21:25,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:25,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:21:25,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952077512] [2021-03-11 11:21:25,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:21:25,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:25,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:21:25,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:25,798 INFO L87 Difference]: Start difference. First operand 306 states and 874 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:25,816 INFO L93 Difference]: Finished difference Result 330 states and 908 transitions. [2021-03-11 11:21:25,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:21:25,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-03-11 11:21:25,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:25,819 INFO L225 Difference]: With dead ends: 330 [2021-03-11 11:21:25,819 INFO L226 Difference]: Without dead ends: 282 [2021-03-11 11:21:25,819 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:21:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-03-11 11:21:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-03-11 11:21:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.8185053380782916) internal successors, (792), 281 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 792 transitions. [2021-03-11 11:21:25,828 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 792 transitions. Word has length 10 [2021-03-11 11:21:25,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:25,829 INFO L480 AbstractCegarLoop]: Abstraction has 282 states and 792 transitions. [2021-03-11 11:21:25,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,829 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 792 transitions. [2021-03-11 11:21:25,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:21:25,830 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:25,830 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:25,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:21:25,830 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:25,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:25,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1264190662, now seen corresponding path program 1 times [2021-03-11 11:21:25,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:25,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483723766] [2021-03-11 11:21:25,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:25,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:25,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:25,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:25,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:25,878 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:21:25,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:21:25,889 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:21:25,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:21:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:25,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483723766] [2021-03-11 11:21:25,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:25,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:21:25,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527808737] [2021-03-11 11:21:25,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:21:25,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:25,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:21:25,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:21:25,896 INFO L87 Difference]: Start difference. First operand 282 states and 792 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:25,936 INFO L93 Difference]: Finished difference Result 334 states and 911 transitions. [2021-03-11 11:21:25,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:21:25,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2021-03-11 11:21:25,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:25,947 INFO L225 Difference]: With dead ends: 334 [2021-03-11 11:21:25,947 INFO L226 Difference]: Without dead ends: 140 [2021-03-11 11:21:25,951 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:21:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-03-11 11:21:25,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-03-11 11:21:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.5467625899280577) internal successors, (354), 139 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2021-03-11 11:21:25,956 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2021-03-11 11:21:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:25,956 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2021-03-11 11:21:25,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2021-03-11 11:21:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:21:25,957 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:25,957 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:25,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:21:25,958 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:25,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:25,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1229929852, now seen corresponding path program 1 times [2021-03-11 11:21:25,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:25,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494986094] [2021-03-11 11:21:25,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:25,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:25,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:26,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:26,004 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:21:26,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:21:26,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:21:26,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:21:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:26,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494986094] [2021-03-11 11:21:26,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:26,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:21:26,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538021308] [2021-03-11 11:21:26,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:21:26,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:26,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:21:26,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:21:26,018 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:26,061 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2021-03-11 11:21:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:21:26,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-03-11 11:21:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:26,062 INFO L225 Difference]: With dead ends: 176 [2021-03-11 11:21:26,062 INFO L226 Difference]: Without dead ends: 80 [2021-03-11 11:21:26,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 30.2ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-11 11:21:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-03-11 11:21:26,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-03-11 11:21:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.2278481012658227) internal successors, (176), 79 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2021-03-11 11:21:26,066 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2021-03-11 11:21:26,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:26,066 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2021-03-11 11:21:26,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2021-03-11 11:21:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-03-11 11:21:26,070 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:26,070 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:26,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:21:26,070 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:26,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1047917625, now seen corresponding path program 1 times [2021-03-11 11:21:26,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:26,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736769830] [2021-03-11 11:21:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:26,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:26,140 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 11:21:26,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:21:26,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:21:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:26,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736769830] [2021-03-11 11:21:26,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:26,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:21:26,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732709694] [2021-03-11 11:21:26,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:21:26,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:26,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:21:26,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:21:26,149 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:26,173 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2021-03-11 11:21:26,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:21:26,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-03-11 11:21:26,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:26,175 INFO L225 Difference]: With dead ends: 91 [2021-03-11 11:21:26,175 INFO L226 Difference]: Without dead ends: 69 [2021-03-11 11:21:26,176 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-03-11 11:21:26,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-03-11 11:21:26,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 68 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2021-03-11 11:21:26,178 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2021-03-11 11:21:26,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:26,178 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2021-03-11 11:21:26,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,179 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2021-03-11 11:21:26,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-11 11:21:26,179 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:26,179 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:26,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 11:21:26,179 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:26,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:26,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1873414162, now seen corresponding path program 1 times [2021-03-11 11:21:26,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:26,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232990046] [2021-03-11 11:21:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:26,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:26,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:26,246 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 11:21:26,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:21:26,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:21:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:26,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232990046] [2021-03-11 11:21:26,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:26,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:21:26,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832366544] [2021-03-11 11:21:26,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:21:26,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:26,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:21:26,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:26,256 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:26,284 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2021-03-11 11:21:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:21:26,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-03-11 11:21:26,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:26,285 INFO L225 Difference]: With dead ends: 65 [2021-03-11 11:21:26,285 INFO L226 Difference]: Without dead ends: 50 [2021-03-11 11:21:26,287 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:21:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-03-11 11:21:26,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-03-11 11:21:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.6938775510204083) internal successors, (83), 49 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2021-03-11 11:21:26,289 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2021-03-11 11:21:26,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:26,290 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2021-03-11 11:21:26,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,290 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2021-03-11 11:21:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-03-11 11:21:26,290 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:26,290 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:26,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 11:21:26,291 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:26,291 INFO L82 PathProgramCache]: Analyzing trace with hash -2054223461, now seen corresponding path program 1 times [2021-03-11 11:21:26,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:26,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539979214] [2021-03-11 11:21:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:26,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:26,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:26,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:26,356 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 11:21:26,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:21:26,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:21:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:26,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539979214] [2021-03-11 11:21:26,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:26,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 11:21:26,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139691482] [2021-03-11 11:21:26,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:21:26,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:26,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:21:26,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:21:26,366 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:26,403 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2021-03-11 11:21:26,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:21:26,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-03-11 11:21:26,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:26,404 INFO L225 Difference]: With dead ends: 43 [2021-03-11 11:21:26,404 INFO L226 Difference]: Without dead ends: 37 [2021-03-11 11:21:26,404 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:21:26,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-03-11 11:21:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-03-11 11:21:26,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 36 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) [2021-03-11 11:21:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2021-03-11 11:21:26,406 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2021-03-11 11:21:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:26,406 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2021-03-11 11:21:26,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2021-03-11 11:21:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-11 11:21:26,407 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:21:26,407 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:21:26,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 11:21:26,407 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:21:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:21:26,407 INFO L82 PathProgramCache]: Analyzing trace with hash 683543196, now seen corresponding path program 1 times [2021-03-11 11:21:26,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:21:26,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908918403] [2021-03-11 11:21:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:21:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:21:26,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:21:26,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:26,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:21:26,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:21:26,457 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-11 11:21:26,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 11:21:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:21:26,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908918403] [2021-03-11 11:21:26,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:21:26,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:21:26,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259741476] [2021-03-11 11:21:26,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:21:26,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:21:26,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:21:26,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:21:26,465 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:21:26,486 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2021-03-11 11:21:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:21:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2021-03-11 11:21:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:21:26,486 INFO L225 Difference]: With dead ends: 36 [2021-03-11 11:21:26,486 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:21:26,486 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:21:26,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:21:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:21:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:21:26,487 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-03-11 11:21:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:21:26,487 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:21:26,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:21:26,488 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:21:26,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:21:26,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 11:21:26,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:21:26 BasicIcfg [2021-03-11 11:21:26,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:21:26,493 INFO L168 Benchmark]: Toolchain (without parser) took 5280.42 ms. Allocated memory was 255.9 MB in the beginning and 408.9 MB in the end (delta: 153.1 MB). Free memory was 233.7 MB in the beginning and 309.8 MB in the end (delta: -76.1 MB). Peak memory consumption was 76.4 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:26,493 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:21:26,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.49 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 232.8 MB in the beginning and 302.4 MB in the end (delta: -69.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:26,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.45 ms. Allocated memory is still 339.7 MB. Free memory was 302.4 MB in the beginning and 300.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:26,496 INFO L168 Benchmark]: Boogie Preprocessor took 26.64 ms. Allocated memory is still 339.7 MB. Free memory was 300.3 MB in the beginning and 299.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:26,496 INFO L168 Benchmark]: RCFGBuilder took 450.61 ms. Allocated memory is still 339.7 MB. Free memory was 299.1 MB in the beginning and 316.5 MB in the end (delta: -17.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:26,496 INFO L168 Benchmark]: TraceAbstraction took 4349.76 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 316.5 MB in the beginning and 309.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 75.5 MB. Max. memory is 16.0 GB. [2021-03-11 11:21:26,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 402.49 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 232.8 MB in the beginning and 302.4 MB in the end (delta: -69.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.45 ms. Allocated memory is still 339.7 MB. Free memory was 302.4 MB in the beginning and 300.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.64 ms. Allocated memory is still 339.7 MB. Free memory was 300.3 MB in the beginning and 299.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 450.61 ms. Allocated memory is still 339.7 MB. Free memory was 299.1 MB in the beginning and 316.5 MB in the end (delta: -17.3 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4349.76 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 316.5 MB in the beginning and 309.8 MB in the end (delta: 6.7 MB). Peak memory consumption was 75.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2728.1ms, 84 PlacesBefore, 32 PlacesAfterwards, 76 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 2521 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1415, positive: 1325, positive conditional: 0, positive unconditional: 1325, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 850, positive: 825, positive conditional: 0, positive unconditional: 825, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 850, positive: 816, positive conditional: 0, positive unconditional: 816, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 149, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 111, negative conditional: 0, negative unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1415, positive: 500, positive conditional: 0, positive unconditional: 500, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 850, unknown conditional: 0, unknown unconditional: 850] , Statistics on independence cache: Total cache size (in pairs): 70, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4246.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 16.9ms, AutomataDifference: 411.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2792.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 218 SDtfs, 260 SDslu, 367 SDs, 0 SdLazy, 149 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 119.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 219.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 119.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.8ms SsaConstructionTime, 159.6ms SatisfiabilityAnalysisTime, 547.4ms InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...