/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:25:24,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:25:24,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:25:24,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:25:24,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:25:24,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:25:24,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:25:24,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:25:24,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:25:24,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:25:24,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:25:24,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:25:24,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:25:24,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:25:24,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:25:24,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:25:24,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:25:24,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:25:24,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:25:24,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:25:24,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:25:24,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:25:24,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:25:24,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:25:24,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:25:24,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:25:24,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:25:24,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:25:24,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:25:24,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:25:24,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:25:24,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:25:24,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:25:24,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:25:24,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:25:24,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:25:24,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:25:24,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:25:24,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:25:24,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:25:24,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:25:24,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:25:24,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:25:24,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:25:24,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:25:24,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:25:24,800 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:25:24,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:25:24,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:25:24,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:25:24,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:25:24,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:25:24,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:25:24,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:25:24,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:25:24,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:25:24,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:25:24,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:25:24,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:25:24,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:25:24,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:25:24,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:25:24,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:25:24,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:25:24,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:25:24,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:25:24,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:25:24,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:25:24,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:25:24,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:25:24,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:25:24,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:25:25,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:25:25,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:25:25,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:25:25,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:25:25,312 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:25:25,313 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-09-11 15:25:25,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da60b912b/83a6ba90fafd4d228f4a1ea77a9767cd/FLAG5ce61326b [2020-09-11 15:25:26,020 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:25:26,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-09-11 15:25:26,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da60b912b/83a6ba90fafd4d228f4a1ea77a9767cd/FLAG5ce61326b [2020-09-11 15:25:26,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da60b912b/83a6ba90fafd4d228f4a1ea77a9767cd [2020-09-11 15:25:26,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:25:26,302 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:25:26,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:25:26,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:25:26,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:25:26,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:25:26" (1/1) ... [2020-09-11 15:25:26,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e4e31b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:26, skipping insertion in model container [2020-09-11 15:25:26,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:25:26" (1/1) ... [2020-09-11 15:25:26,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:25:26,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:25:26,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:25:26,989 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:25:27,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:25:27,145 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:25:27,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27 WrapperNode [2020-09-11 15:25:27,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:25:27,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:25:27,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:25:27,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:25:27,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27" (1/1) ... [2020-09-11 15:25:27,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27" (1/1) ... [2020-09-11 15:25:27,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:25:27,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:25:27,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:25:27,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:25:27,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27" (1/1) ... [2020-09-11 15:25:27,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27" (1/1) ... [2020-09-11 15:25:27,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27" (1/1) ... [2020-09-11 15:25:27,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27" (1/1) ... [2020-09-11 15:25:27,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27" (1/1) ... [2020-09-11 15:25:27,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27" (1/1) ... [2020-09-11 15:25:27,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27" (1/1) ... [2020-09-11 15:25:27,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:25:27,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:25:27,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:25:27,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:25:27,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 15:25:27,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:25:27,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:25:27,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:25:27,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:25:27,320 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:25:27,320 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:25:27,321 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:25:27,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:25:27,321 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:25:27,321 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:25:27,321 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-11 15:25:27,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-11 15:25:27,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:25:27,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:25:27,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:25:27,326 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:25:27,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:25:27,716 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:25:27,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:25:27 BoogieIcfgContainer [2020-09-11 15:25:27,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:25:27,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:25:27,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:25:27,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:25:27,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:25:26" (1/3) ... [2020-09-11 15:25:27,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72085bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:25:27, skipping insertion in model container [2020-09-11 15:25:27,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:25:27" (2/3) ... [2020-09-11 15:25:27,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72085bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:25:27, skipping insertion in model container [2020-09-11 15:25:27,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:25:27" (3/3) ... [2020-09-11 15:25:27,732 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-09-11 15:25:27,744 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:25:27,745 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:25:27,754 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:25:27,756 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:25:27,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,790 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,790 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,791 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,791 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,792 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,792 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,793 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,793 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,793 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,794 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,794 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,794 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,795 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,795 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,795 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,796 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,796 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,796 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,796 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,797 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,801 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,802 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,802 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,802 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,813 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,813 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,813 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,814 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,816 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,816 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,817 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,817 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,819 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,819 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,820 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,820 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:25:27,841 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 15:25:27,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:25:27,871 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:25:27,871 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:25:27,871 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:25:27,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:25:27,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:25:27,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:25:27,872 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:25:27,891 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-09-11 15:25:27,894 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-11 15:25:27,947 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-11 15:25:27,948 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:25:27,954 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 15:25:27,958 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-11 15:25:27,983 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-11 15:25:27,983 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:25:27,984 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-09-11 15:25:27,987 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-11 15:25:27,989 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:25:29,763 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-09-11 15:25:29,763 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-11 15:25:29,768 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-09-11 15:25:29,826 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-09-11 15:25:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-09-11 15:25:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:25:29,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:29,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:29,843 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:29,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:29,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-09-11 15:25:29,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:29,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408414741] [2020-09-11 15:25:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:30,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408414741] [2020-09-11 15:25:30,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:30,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:25:30,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408541586] [2020-09-11 15:25:30,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 15:25:30,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:30,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 15:25:30,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 15:25:30,101 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-09-11 15:25:30,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:30,162 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-09-11 15:25:30,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 15:25:30,164 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-11 15:25:30,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:30,202 INFO L225 Difference]: With dead ends: 850 [2020-09-11 15:25:30,202 INFO L226 Difference]: Without dead ends: 706 [2020-09-11 15:25:30,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 15:25:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-11 15:25:30,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-09-11 15:25:30,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-09-11 15:25:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-09-11 15:25:30,361 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-09-11 15:25:30,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:30,362 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-09-11 15:25:30,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 15:25:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-09-11 15:25:30,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:25:30,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:30,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:30,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:25:30,368 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:30,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:30,368 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-09-11 15:25:30,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:30,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298792371] [2020-09-11 15:25:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:30,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298792371] [2020-09-11 15:25:30,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:30,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:25:30,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207817500] [2020-09-11 15:25:30,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:30,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:30,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:30,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:30,551 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-09-11 15:25:30,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:30,621 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-09-11 15:25:30,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:30,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 15:25:30,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:30,628 INFO L225 Difference]: With dead ends: 802 [2020-09-11 15:25:30,628 INFO L226 Difference]: Without dead ends: 658 [2020-09-11 15:25:30,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:30,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-11 15:25:30,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-09-11 15:25:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-11 15:25:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-09-11 15:25:30,659 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-09-11 15:25:30,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:30,659 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-09-11 15:25:30,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:30,660 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-09-11 15:25:30,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:25:30,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:30,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:30,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:25:30,663 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:30,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:30,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-09-11 15:25:30,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:30,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383336914] [2020-09-11 15:25:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:30,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383336914] [2020-09-11 15:25:30,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:30,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:25:30,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878298018] [2020-09-11 15:25:30,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:30,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:30,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:30,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:30,788 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-09-11 15:25:30,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:30,823 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-09-11 15:25:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:30,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 15:25:30,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:30,829 INFO L225 Difference]: With dead ends: 718 [2020-09-11 15:25:30,829 INFO L226 Difference]: Without dead ends: 598 [2020-09-11 15:25:30,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:30,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-09-11 15:25:30,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-09-11 15:25:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-09-11 15:25:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-09-11 15:25:30,854 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-09-11 15:25:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:30,855 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-09-11 15:25:30,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-09-11 15:25:30,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:25:30,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:30,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:30,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:25:30,860 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:30,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:30,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-09-11 15:25:30,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:30,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683202119] [2020-09-11 15:25:30,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:30,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683202119] [2020-09-11 15:25:30,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:30,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:25:30,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322300945] [2020-09-11 15:25:30,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:30,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:30,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:30,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:30,979 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 4 states. [2020-09-11 15:25:31,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:31,011 INFO L93 Difference]: Finished difference Result 634 states and 2058 transitions. [2020-09-11 15:25:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:31,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 15:25:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:31,017 INFO L225 Difference]: With dead ends: 634 [2020-09-11 15:25:31,017 INFO L226 Difference]: Without dead ends: 562 [2020-09-11 15:25:31,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-09-11 15:25:31,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2020-09-11 15:25:31,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-09-11 15:25:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1854 transitions. [2020-09-11 15:25:31,043 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1854 transitions. Word has length 13 [2020-09-11 15:25:31,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:31,043 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 1854 transitions. [2020-09-11 15:25:31,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:31,044 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1854 transitions. [2020-09-11 15:25:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:25:31,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:31,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:31,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:25:31,046 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:31,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:31,047 INFO L82 PathProgramCache]: Analyzing trace with hash -464753782, now seen corresponding path program 1 times [2020-09-11 15:25:31,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:31,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720047449] [2020-09-11 15:25:31,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:31,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720047449] [2020-09-11 15:25:31,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:31,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:25:31,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564521847] [2020-09-11 15:25:31,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:25:31,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:31,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:25:31,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:31,131 INFO L87 Difference]: Start difference. First operand 562 states and 1854 transitions. Second operand 5 states. [2020-09-11 15:25:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:31,199 INFO L93 Difference]: Finished difference Result 834 states and 2710 transitions. [2020-09-11 15:25:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:25:31,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-11 15:25:31,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:31,204 INFO L225 Difference]: With dead ends: 834 [2020-09-11 15:25:31,204 INFO L226 Difference]: Without dead ends: 450 [2020-09-11 15:25:31,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-11 15:25:31,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-09-11 15:25:31,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2020-09-11 15:25:31,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-09-11 15:25:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1444 transitions. [2020-09-11 15:25:31,222 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1444 transitions. Word has length 14 [2020-09-11 15:25:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:31,222 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 1444 transitions. [2020-09-11 15:25:31,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:25:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1444 transitions. [2020-09-11 15:25:31,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:25:31,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:31,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:31,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:25:31,225 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:31,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:31,225 INFO L82 PathProgramCache]: Analyzing trace with hash -453774883, now seen corresponding path program 1 times [2020-09-11 15:25:31,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:31,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301910662] [2020-09-11 15:25:31,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:31,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:31,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301910662] [2020-09-11 15:25:31,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:31,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:25:31,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421500809] [2020-09-11 15:25:31,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:25:31,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:31,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:25:31,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:31,307 INFO L87 Difference]: Start difference. First operand 450 states and 1444 transitions. Second operand 5 states. [2020-09-11 15:25:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:31,403 INFO L93 Difference]: Finished difference Result 834 states and 2560 transitions. [2020-09-11 15:25:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-11 15:25:31,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 15:25:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:31,408 INFO L225 Difference]: With dead ends: 834 [2020-09-11 15:25:31,408 INFO L226 Difference]: Without dead ends: 410 [2020-09-11 15:25:31,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:25:31,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-09-11 15:25:31,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 346. [2020-09-11 15:25:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-09-11 15:25:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1030 transitions. [2020-09-11 15:25:31,425 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1030 transitions. Word has length 15 [2020-09-11 15:25:31,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:31,426 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 1030 transitions. [2020-09-11 15:25:31,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:25:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1030 transitions. [2020-09-11 15:25:31,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:25:31,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:31,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:31,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:25:31,428 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:31,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:31,429 INFO L82 PathProgramCache]: Analyzing trace with hash -99110680, now seen corresponding path program 1 times [2020-09-11 15:25:31,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:31,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106144354] [2020-09-11 15:25:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:31,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106144354] [2020-09-11 15:25:31,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:31,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:25:31,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858629105] [2020-09-11 15:25:31,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:31,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:31,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:31,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:31,529 INFO L87 Difference]: Start difference. First operand 346 states and 1030 transitions. Second operand 4 states. [2020-09-11 15:25:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:31,567 INFO L93 Difference]: Finished difference Result 494 states and 1402 transitions. [2020-09-11 15:25:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:31,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-11 15:25:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:31,571 INFO L225 Difference]: With dead ends: 494 [2020-09-11 15:25:31,571 INFO L226 Difference]: Without dead ends: 370 [2020-09-11 15:25:31,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-09-11 15:25:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 322. [2020-09-11 15:25:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-09-11 15:25:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 910 transitions. [2020-09-11 15:25:31,584 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 910 transitions. Word has length 15 [2020-09-11 15:25:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:31,585 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 910 transitions. [2020-09-11 15:25:31,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 910 transitions. [2020-09-11 15:25:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:25:31,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:31,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:31,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:25:31,606 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:31,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:31,609 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-09-11 15:25:31,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:31,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135664802] [2020-09-11 15:25:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:31,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135664802] [2020-09-11 15:25:31,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:31,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:25:31,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815945794] [2020-09-11 15:25:31,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:25:31,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:31,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:25:31,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:31,731 INFO L87 Difference]: Start difference. First operand 322 states and 910 transitions. Second operand 5 states. [2020-09-11 15:25:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:31,779 INFO L93 Difference]: Finished difference Result 454 states and 1236 transitions. [2020-09-11 15:25:31,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:31,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 15:25:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:31,782 INFO L225 Difference]: With dead ends: 454 [2020-09-11 15:25:31,782 INFO L226 Difference]: Without dead ends: 238 [2020-09-11 15:25:31,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:25:31,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-11 15:25:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-09-11 15:25:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-11 15:25:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 639 transitions. [2020-09-11 15:25:31,792 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 639 transitions. Word has length 15 [2020-09-11 15:25:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:31,792 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 639 transitions. [2020-09-11 15:25:31,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:25:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 639 transitions. [2020-09-11 15:25:31,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:25:31,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:31,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:31,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:25:31,794 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:31,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:31,795 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-09-11 15:25:31,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:31,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958089361] [2020-09-11 15:25:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:31,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958089361] [2020-09-11 15:25:31,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:31,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:25:31,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688970041] [2020-09-11 15:25:31,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:25:31,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:31,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:25:31,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:25:31,878 INFO L87 Difference]: Start difference. First operand 238 states and 639 transitions. Second operand 4 states. [2020-09-11 15:25:31,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:31,917 INFO L93 Difference]: Finished difference Result 283 states and 696 transitions. [2020-09-11 15:25:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:25:31,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-11 15:25:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:31,920 INFO L225 Difference]: With dead ends: 283 [2020-09-11 15:25:31,920 INFO L226 Difference]: Without dead ends: 214 [2020-09-11 15:25:31,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:31,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-11 15:25:31,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-09-11 15:25:31,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-11 15:25:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 534 transitions. [2020-09-11 15:25:31,928 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 534 transitions. Word has length 15 [2020-09-11 15:25:31,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:31,928 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 534 transitions. [2020-09-11 15:25:31,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:25:31,929 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 534 transitions. [2020-09-11 15:25:31,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 15:25:31,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:31,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:31,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 15:25:31,930 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:31,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:31,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-09-11 15:25:31,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:31,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279397327] [2020-09-11 15:25:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:32,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279397327] [2020-09-11 15:25:32,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:32,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:25:32,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916015573] [2020-09-11 15:25:32,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:25:32,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:25:32,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:32,018 INFO L87 Difference]: Start difference. First operand 214 states and 534 transitions. Second operand 5 states. [2020-09-11 15:25:32,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:32,069 INFO L93 Difference]: Finished difference Result 211 states and 465 transitions. [2020-09-11 15:25:32,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:25:32,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-11 15:25:32,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:32,071 INFO L225 Difference]: With dead ends: 211 [2020-09-11 15:25:32,071 INFO L226 Difference]: Without dead ends: 158 [2020-09-11 15:25:32,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:25:32,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-11 15:25:32,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-11 15:25:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-11 15:25:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 339 transitions. [2020-09-11 15:25:32,077 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 339 transitions. Word has length 16 [2020-09-11 15:25:32,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:32,078 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 339 transitions. [2020-09-11 15:25:32,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:25:32,078 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 339 transitions. [2020-09-11 15:25:32,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:25:32,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:32,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:32,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 15:25:32,079 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:32,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:32,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-09-11 15:25:32,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:32,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490581734] [2020-09-11 15:25:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:32,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490581734] [2020-09-11 15:25:32,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:32,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-11 15:25:32,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157083821] [2020-09-11 15:25:32,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:25:32,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:32,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:25:32,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:25:32,166 INFO L87 Difference]: Start difference. First operand 158 states and 339 transitions. Second operand 6 states. [2020-09-11 15:25:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:32,231 INFO L93 Difference]: Finished difference Result 134 states and 268 transitions. [2020-09-11 15:25:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:25:32,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-11 15:25:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:32,232 INFO L225 Difference]: With dead ends: 134 [2020-09-11 15:25:32,233 INFO L226 Difference]: Without dead ends: 95 [2020-09-11 15:25:32,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:25:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-11 15:25:32,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-09-11 15:25:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-11 15:25:32,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 181 transitions. [2020-09-11 15:25:32,237 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 181 transitions. Word has length 17 [2020-09-11 15:25:32,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:32,237 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 181 transitions. [2020-09-11 15:25:32,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:25:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 181 transitions. [2020-09-11 15:25:32,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:25:32,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:32,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:32,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 15:25:32,238 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:32,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:32,239 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-09-11 15:25:32,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:32,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709989632] [2020-09-11 15:25:32,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:32,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709989632] [2020-09-11 15:25:32,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:32,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:25:32,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985607265] [2020-09-11 15:25:32,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:25:32,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:32,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:25:32,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:25:32,305 INFO L87 Difference]: Start difference. First operand 95 states and 181 transitions. Second operand 5 states. [2020-09-11 15:25:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:32,337 INFO L93 Difference]: Finished difference Result 109 states and 198 transitions. [2020-09-11 15:25:32,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:25:32,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-11 15:25:32,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:32,339 INFO L225 Difference]: With dead ends: 109 [2020-09-11 15:25:32,339 INFO L226 Difference]: Without dead ends: 93 [2020-09-11 15:25:32,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:25:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-11 15:25:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-09-11 15:25:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-11 15:25:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 169 transitions. [2020-09-11 15:25:32,343 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 169 transitions. Word has length 19 [2020-09-11 15:25:32,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:32,344 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 169 transitions. [2020-09-11 15:25:32,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:25:32,344 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 169 transitions. [2020-09-11 15:25:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-11 15:25:32,345 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:25:32,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:25:32,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 15:25:32,345 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:25:32,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:25:32,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-09-11 15:25:32,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:25:32,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173903407] [2020-09-11 15:25:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:25:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:25:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:25:32,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173903407] [2020-09-11 15:25:32,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:25:32,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-11 15:25:32,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826748141] [2020-09-11 15:25:32,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 15:25:32,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:25:32,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 15:25:32,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:25:32,442 INFO L87 Difference]: Start difference. First operand 91 states and 169 transitions. Second operand 7 states. [2020-09-11 15:25:32,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:25:32,486 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-09-11 15:25:32,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:25:32,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-11 15:25:32,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:25:32,486 INFO L225 Difference]: With dead ends: 81 [2020-09-11 15:25:32,487 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:25:32,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-11 15:25:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:25:32,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:25:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:25:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:25:32,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-11 15:25:32,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:25:32,488 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:25:32,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 15:25:32,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:25:32,489 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:25:32,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-11 15:25:32,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:25:32 BasicIcfg [2020-09-11 15:25:32,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:25:32,497 INFO L168 Benchmark]: Toolchain (without parser) took 6198.54 ms. Allocated memory was 140.0 MB in the beginning and 292.0 MB in the end (delta: 152.0 MB). Free memory was 101.8 MB in the beginning and 140.5 MB in the end (delta: -38.7 MB). Peak memory consumption was 113.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:32,498 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:25:32,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 843.60 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 157.4 MB in the end (delta: -56.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:32,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.72 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 154.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:32,500 INFO L168 Benchmark]: Boogie Preprocessor took 30.06 ms. Allocated memory is still 202.9 MB. Free memory was 154.7 MB in the beginning and 153.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:32,501 INFO L168 Benchmark]: RCFGBuilder took 484.59 ms. Allocated memory is still 202.9 MB. Free memory was 153.4 MB in the beginning and 129.1 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:32,502 INFO L168 Benchmark]: TraceAbstraction took 4770.16 ms. Allocated memory was 202.9 MB in the beginning and 292.0 MB in the end (delta: 89.1 MB). Free memory was 129.1 MB in the beginning and 140.5 MB in the end (delta: -11.4 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. [2020-09-11 15:25:32,505 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 843.60 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 157.4 MB in the end (delta: -56.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.72 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 154.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.06 ms. Allocated memory is still 202.9 MB. Free memory was 154.7 MB in the beginning and 153.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 484.59 ms. Allocated memory is still 202.9 MB. Free memory was 153.4 MB in the beginning and 129.1 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4770.16 ms. Allocated memory was 202.9 MB in the beginning and 292.0 MB in the end (delta: 89.1 MB). Free memory was 129.1 MB in the beginning and 140.5 MB in the end (delta: -11.4 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 953 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 32 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 347 SDtfs, 346 SDslu, 602 SDs, 0 SdLazy, 217 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 114 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 7404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...