/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:58:27,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:58:27,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:58:27,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:58:27,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:58:27,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:58:27,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:58:27,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:58:27,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:58:27,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:58:27,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:58:27,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:58:27,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:58:27,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:58:27,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:58:27,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:58:27,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:58:27,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:58:27,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:58:27,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:58:27,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:58:27,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:58:27,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:58:27,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:58:27,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:58:27,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:58:27,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:58:27,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:58:27,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:58:27,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:58:27,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:58:27,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:58:27,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:58:27,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:58:27,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:58:27,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:58:27,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:58:27,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:58:27,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:58:27,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:58:27,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:58:27,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:58:27,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:58:27,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:58:27,887 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:58:27,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:58:27,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:58:27,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:58:27,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:58:27,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:58:27,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:58:27,888 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:58:28,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:58:28,320 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:58:28,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:58:28,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:58:28,327 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:58:28,328 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-22 18:58:28,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da13bf5d/2e3928c6754f472bb8500944be5be64a/FLAG70746351e [2020-08-22 18:58:29,071 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:58:29,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-22 18:58:29,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da13bf5d/2e3928c6754f472bb8500944be5be64a/FLAG70746351e [2020-08-22 18:58:29,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7da13bf5d/2e3928c6754f472bb8500944be5be64a [2020-08-22 18:58:29,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:58:29,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:58:29,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:58:29,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:58:29,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:58:29,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:58:29" (1/1) ... [2020-08-22 18:58:29,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d8a8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:29, skipping insertion in model container [2020-08-22 18:58:29,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:58:29" (1/1) ... [2020-08-22 18:58:29,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:58:29,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:58:29,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:58:29,774 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:58:30,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:58:30,036 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:58:30,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:30 WrapperNode [2020-08-22 18:58:30,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:58:30,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:58:30,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:58:30,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:58:30,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:30" (1/1) ... [2020-08-22 18:58:30,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:30" (1/1) ... [2020-08-22 18:58:30,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:30" (1/1) ... [2020-08-22 18:58:30,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:30" (1/1) ... [2020-08-22 18:58:30,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:30" (1/1) ... [2020-08-22 18:58:30,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:30" (1/1) ... [2020-08-22 18:58:30,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:30" (1/1) ... [2020-08-22 18:58:30,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:58:30,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:58:30,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:58:30,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:58:30,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:58:30,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:58:30,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:58:30,191 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-08-22 18:58:30,191 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-08-22 18:58:30,192 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-08-22 18:58:30,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:58:30,192 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-08-22 18:58:30,192 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-08-22 18:58:30,192 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-08-22 18:58:30,192 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-08-22 18:58:30,192 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-08-22 18:58:30,193 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-08-22 18:58:30,193 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-08-22 18:58:30,193 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-08-22 18:58:30,193 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-08-22 18:58:30,193 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-08-22 18:58:30,194 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-08-22 18:58:30,194 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-08-22 18:58:30,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:58:30,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 18:58:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:58:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-22 18:58:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-08-22 18:58:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-08-22 18:58:30,195 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-08-22 18:58:30,196 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-08-22 18:58:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-08-22 18:58:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-08-22 18:58:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-08-22 18:58:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-08-22 18:58:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-08-22 18:58:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-08-22 18:58:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-08-22 18:58:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-08-22 18:58:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-08-22 18:58:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-08-22 18:58:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:58:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-08-22 18:58:30,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:58:30,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:58:30,531 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 18:58:30,627 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-08-22 18:58:30,628 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-08-22 18:58:30,686 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 18:58:30,898 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-08-22 18:58:30,899 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-08-22 18:58:30,900 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 18:58:30,964 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-22 18:58:30,964 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-22 18:58:30,972 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 18:58:31,033 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-22 18:58:31,034 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-22 18:58:31,214 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 18:58:31,241 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-08-22 18:58:31,241 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-08-22 18:58:31,302 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-22 18:58:31,437 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-08-22 18:58:31,437 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-08-22 18:58:31,464 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:58:31,464 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 18:58:31,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:58:31 BoogieIcfgContainer [2020-08-22 18:58:31,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:58:31,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:58:31,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:58:31,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:58:31,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:58:29" (1/3) ... [2020-08-22 18:58:31,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e312ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:58:31, skipping insertion in model container [2020-08-22 18:58:31,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:58:30" (2/3) ... [2020-08-22 18:58:31,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e312ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:58:31, skipping insertion in model container [2020-08-22 18:58:31,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:58:31" (3/3) ... [2020-08-22 18:58:31,486 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-08-22 18:58:31,499 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:58:31,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:58:31,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:58:31,552 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:58:31,552 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:58:31,552 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:58:31,553 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:58:31,553 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:58:31,553 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:58:31,553 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:58:31,553 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:58:31,583 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states. [2020-08-22 18:58:31,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 18:58:31,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:58:31,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:58:31,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:58:31,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:58:31,621 INFO L82 PathProgramCache]: Analyzing trace with hash 738723625, now seen corresponding path program 1 times [2020-08-22 18:58:31,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:58:31,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652193894] [2020-08-22 18:58:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:58:31,701 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:58:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:32,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:58:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:32,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:58:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:58:32,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652193894] [2020-08-22 18:58:32,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:58:32,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:58:32,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890428066] [2020-08-22 18:58:32,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:58:32,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:58:32,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:58:32,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:58:32,174 INFO L87 Difference]: Start difference. First operand 667 states. Second operand 5 states. [2020-08-22 18:58:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:58:34,472 INFO L93 Difference]: Finished difference Result 1037 states and 1248 transitions. [2020-08-22 18:58:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:58:34,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-08-22 18:58:34,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:58:34,500 INFO L225 Difference]: With dead ends: 1037 [2020-08-22 18:58:34,500 INFO L226 Difference]: Without dead ends: 709 [2020-08-22 18:58:34,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:58:34,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-08-22 18:58:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 655. [2020-08-22 18:58:34,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-22 18:58:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 750 transitions. [2020-08-22 18:58:34,750 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 750 transitions. Word has length 85 [2020-08-22 18:58:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:58:34,753 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 750 transitions. [2020-08-22 18:58:34,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:58:34,753 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 750 transitions. [2020-08-22 18:58:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 18:58:34,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:58:34,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:58:34,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:58:34,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:58:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:58:34,773 INFO L82 PathProgramCache]: Analyzing trace with hash -242240865, now seen corresponding path program 1 times [2020-08-22 18:58:34,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:58:34,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485706557] [2020-08-22 18:58:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:58:34,783 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:58:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:35,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:58:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:35,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:58:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:35,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:58:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:58:35,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485706557] [2020-08-22 18:58:35,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:58:35,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:58:35,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293874107] [2020-08-22 18:58:35,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:58:35,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:58:35,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:58:35,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:58:35,141 INFO L87 Difference]: Start difference. First operand 655 states and 750 transitions. Second operand 6 states. [2020-08-22 18:58:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:58:37,438 INFO L93 Difference]: Finished difference Result 976 states and 1131 transitions. [2020-08-22 18:58:37,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 18:58:37,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-08-22 18:58:37,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:58:37,448 INFO L225 Difference]: With dead ends: 976 [2020-08-22 18:58:37,448 INFO L226 Difference]: Without dead ends: 885 [2020-08-22 18:58:37,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:58:37,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-22 18:58:37,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 806. [2020-08-22 18:58:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-08-22 18:58:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 917 transitions. [2020-08-22 18:58:37,553 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 917 transitions. Word has length 136 [2020-08-22 18:58:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:58:37,554 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 917 transitions. [2020-08-22 18:58:37,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:58:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 917 transitions. [2020-08-22 18:58:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-08-22 18:58:37,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:58:37,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:58:37,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:58:37,559 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:58:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:58:37,559 INFO L82 PathProgramCache]: Analyzing trace with hash 864276638, now seen corresponding path program 1 times [2020-08-22 18:58:37,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:58:37,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477001446] [2020-08-22 18:58:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:58:37,563 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:58:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:37,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:58:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:37,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:58:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:37,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:58:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:58:37,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477001446] [2020-08-22 18:58:37,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:58:37,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:58:37,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939325859] [2020-08-22 18:58:37,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:58:37,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:58:37,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:58:37,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:58:37,909 INFO L87 Difference]: Start difference. First operand 806 states and 917 transitions. Second operand 6 states. [2020-08-22 18:58:39,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:58:39,601 INFO L93 Difference]: Finished difference Result 1133 states and 1293 transitions. [2020-08-22 18:58:39,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 18:58:39,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-08-22 18:58:39,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:58:39,613 INFO L225 Difference]: With dead ends: 1133 [2020-08-22 18:58:39,614 INFO L226 Difference]: Without dead ends: 907 [2020-08-22 18:58:39,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:58:39,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-08-22 18:58:39,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 881. [2020-08-22 18:58:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-08-22 18:58:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1003 transitions. [2020-08-22 18:58:39,710 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1003 transitions. Word has length 158 [2020-08-22 18:58:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:58:39,710 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1003 transitions. [2020-08-22 18:58:39,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:58:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1003 transitions. [2020-08-22 18:58:39,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-22 18:58:39,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:58:39,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:58:39,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:58:39,715 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:58:39,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:58:39,715 INFO L82 PathProgramCache]: Analyzing trace with hash 153469469, now seen corresponding path program 1 times [2020-08-22 18:58:39,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:58:39,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024223046] [2020-08-22 18:58:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:58:39,719 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:58:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:39,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:58:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:39,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:58:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:39,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:58:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:58:39,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024223046] [2020-08-22 18:58:39,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:58:39,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:58:39,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962154032] [2020-08-22 18:58:39,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:58:39,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:58:39,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:58:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:58:39,962 INFO L87 Difference]: Start difference. First operand 881 states and 1003 transitions. Second operand 6 states. [2020-08-22 18:58:42,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:58:42,219 INFO L93 Difference]: Finished difference Result 885 states and 1006 transitions. [2020-08-22 18:58:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 18:58:42,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-08-22 18:58:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:58:42,226 INFO L225 Difference]: With dead ends: 885 [2020-08-22 18:58:42,227 INFO L226 Difference]: Without dead ends: 881 [2020-08-22 18:58:42,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:58:42,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-08-22 18:58:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 880. [2020-08-22 18:58:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-08-22 18:58:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1000 transitions. [2020-08-22 18:58:42,314 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1000 transitions. Word has length 162 [2020-08-22 18:58:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:58:42,314 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1000 transitions. [2020-08-22 18:58:42,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:58:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1000 transitions. [2020-08-22 18:58:42,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-08-22 18:58:42,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:58:42,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:58:42,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:58:42,320 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:58:42,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:58:42,320 INFO L82 PathProgramCache]: Analyzing trace with hash -363507173, now seen corresponding path program 1 times [2020-08-22 18:58:42,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:58:42,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116431259] [2020-08-22 18:58:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:58:42,323 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:58:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:42,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:58:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:42,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:58:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:42,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:58:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:42,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 18:58:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:42,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 18:58:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:42,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 18:58:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:58:42,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116431259] [2020-08-22 18:58:42,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:58:42,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 18:58:42,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105940742] [2020-08-22 18:58:42,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 18:58:42,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:58:42,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 18:58:42,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:58:42,635 INFO L87 Difference]: Start difference. First operand 880 states and 1000 transitions. Second operand 8 states. [2020-08-22 18:58:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:58:43,616 INFO L93 Difference]: Finished difference Result 892 states and 1015 transitions. [2020-08-22 18:58:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 18:58:43,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-08-22 18:58:43,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:58:43,623 INFO L225 Difference]: With dead ends: 892 [2020-08-22 18:58:43,623 INFO L226 Difference]: Without dead ends: 876 [2020-08-22 18:58:43,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:58:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-08-22 18:58:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 821. [2020-08-22 18:58:43,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-22 18:58:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 936 transitions. [2020-08-22 18:58:43,750 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 936 transitions. Word has length 187 [2020-08-22 18:58:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:58:43,751 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 936 transitions. [2020-08-22 18:58:43,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 18:58:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 936 transitions. [2020-08-22 18:58:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-22 18:58:43,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:58:43,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:58:43,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:58:43,756 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:58:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:58:43,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1857862353, now seen corresponding path program 1 times [2020-08-22 18:58:43,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:58:43,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517835800] [2020-08-22 18:58:43,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:58:43,760 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:58:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:43,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:58:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:43,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:58:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:43,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:58:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:43,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 18:58:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:44,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 18:58:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:44,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 18:58:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:58:44,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517835800] [2020-08-22 18:58:44,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:58:44,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 18:58:44,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699119547] [2020-08-22 18:58:44,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 18:58:44,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:58:44,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 18:58:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:58:44,132 INFO L87 Difference]: Start difference. First operand 821 states and 936 transitions. Second operand 11 states. [2020-08-22 18:58:46,727 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-08-22 18:58:47,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:58:47,826 INFO L93 Difference]: Finished difference Result 944 states and 1075 transitions. [2020-08-22 18:58:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:58:47,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 193 [2020-08-22 18:58:47,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:58:47,837 INFO L225 Difference]: With dead ends: 944 [2020-08-22 18:58:47,838 INFO L226 Difference]: Without dead ends: 938 [2020-08-22 18:58:47,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-08-22 18:58:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2020-08-22 18:58:47,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 880. [2020-08-22 18:58:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-08-22 18:58:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 997 transitions. [2020-08-22 18:58:47,985 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 997 transitions. Word has length 193 [2020-08-22 18:58:47,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:58:47,986 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 997 transitions. [2020-08-22 18:58:47,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 18:58:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 997 transitions. [2020-08-22 18:58:47,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-22 18:58:47,995 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:58:47,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:58:47,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:58:47,996 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:58:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:58:47,996 INFO L82 PathProgramCache]: Analyzing trace with hash -309975460, now seen corresponding path program 1 times [2020-08-22 18:58:47,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:58:47,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479546915] [2020-08-22 18:58:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:58:48,002 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:58:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:48,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:58:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:48,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:58:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:48,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:58:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 18:58:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:48,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 18:58:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 18:58:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:58:48,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479546915] [2020-08-22 18:58:48,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:58:48,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 18:58:48,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792383714] [2020-08-22 18:58:48,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 18:58:48,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:58:48,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 18:58:48,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:58:48,485 INFO L87 Difference]: Start difference. First operand 880 states and 997 transitions. Second operand 15 states. [2020-08-22 18:58:49,571 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-08-22 18:58:51,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:58:51,819 INFO L93 Difference]: Finished difference Result 1002 states and 1127 transitions. [2020-08-22 18:58:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 18:58:51,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 189 [2020-08-22 18:58:51,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:58:51,827 INFO L225 Difference]: With dead ends: 1002 [2020-08-22 18:58:51,827 INFO L226 Difference]: Without dead ends: 928 [2020-08-22 18:58:51,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 18:58:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-08-22 18:58:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 823. [2020-08-22 18:58:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-08-22 18:58:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 931 transitions. [2020-08-22 18:58:51,999 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 931 transitions. Word has length 189 [2020-08-22 18:58:51,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:58:51,999 INFO L479 AbstractCegarLoop]: Abstraction has 823 states and 931 transitions. [2020-08-22 18:58:51,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 18:58:52,000 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 931 transitions. [2020-08-22 18:58:52,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-22 18:58:52,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:58:52,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:58:52,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 18:58:52,004 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:58:52,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:58:52,005 INFO L82 PathProgramCache]: Analyzing trace with hash -132300136, now seen corresponding path program 1 times [2020-08-22 18:58:52,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:58:52,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414824478] [2020-08-22 18:58:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:58:52,008 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:58:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:52,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:58:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:52,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:58:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:52,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:58:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:52,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-22 18:58:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:52,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 18:58:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:52,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 18:58:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:58:52,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414824478] [2020-08-22 18:58:52,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:58:52,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-08-22 18:58:52,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912579917] [2020-08-22 18:58:52,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 18:58:52,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:58:52,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 18:58:52,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-08-22 18:58:52,503 INFO L87 Difference]: Start difference. First operand 823 states and 931 transitions. Second operand 17 states. [2020-08-22 18:58:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:58:56,699 INFO L93 Difference]: Finished difference Result 845 states and 955 transitions. [2020-08-22 18:58:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 18:58:56,700 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 195 [2020-08-22 18:58:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:58:56,706 INFO L225 Difference]: With dead ends: 845 [2020-08-22 18:58:56,706 INFO L226 Difference]: Without dead ends: 828 [2020-08-22 18:58:56,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-08-22 18:58:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-08-22 18:58:56,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 819. [2020-08-22 18:58:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-08-22 18:58:56,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 925 transitions. [2020-08-22 18:58:56,829 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 925 transitions. Word has length 195 [2020-08-22 18:58:56,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:58:56,830 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 925 transitions. [2020-08-22 18:58:56,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 18:58:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 925 transitions. [2020-08-22 18:58:56,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-08-22 18:58:56,834 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:58:56,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:58:56,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 18:58:56,835 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:58:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:58:56,836 INFO L82 PathProgramCache]: Analyzing trace with hash -853263794, now seen corresponding path program 1 times [2020-08-22 18:58:56,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:58:56,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406365149] [2020-08-22 18:58:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:58:56,839 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:58:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:57,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:58:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:58:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:57,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:58:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:57,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 18:58:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:57,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 18:58:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 18:58:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:58:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:58:57,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406365149] [2020-08-22 18:58:57,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:58:57,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-08-22 18:58:57,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470531956] [2020-08-22 18:58:57,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 18:58:57,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:58:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 18:58:57,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-08-22 18:58:57,360 INFO L87 Difference]: Start difference. First operand 819 states and 925 transitions. Second operand 17 states. [2020-08-22 18:59:01,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:01,596 INFO L93 Difference]: Finished difference Result 841 states and 949 transitions. [2020-08-22 18:59:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 18:59:01,597 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 190 [2020-08-22 18:59:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:01,602 INFO L225 Difference]: With dead ends: 841 [2020-08-22 18:59:01,603 INFO L226 Difference]: Without dead ends: 798 [2020-08-22 18:59:01,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-08-22 18:59:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2020-08-22 18:59:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 789. [2020-08-22 18:59:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-22 18:59:01,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 890 transitions. [2020-08-22 18:59:01,733 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 890 transitions. Word has length 190 [2020-08-22 18:59:01,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:01,733 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 890 transitions. [2020-08-22 18:59:01,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 18:59:01,734 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 890 transitions. [2020-08-22 18:59:01,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-22 18:59:01,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:01,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:01,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 18:59:01,739 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:01,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:01,740 INFO L82 PathProgramCache]: Analyzing trace with hash -443732248, now seen corresponding path program 1 times [2020-08-22 18:59:01,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:01,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945183459] [2020-08-22 18:59:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:01,743 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:01,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:01,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:59:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:59:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:01,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 18:59:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:02,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 18:59:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:02,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945183459] [2020-08-22 18:59:02,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:02,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 18:59:02,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440802450] [2020-08-22 18:59:02,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 18:59:02,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:02,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 18:59:02,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-08-22 18:59:02,120 INFO L87 Difference]: Start difference. First operand 789 states and 890 transitions. Second operand 13 states. [2020-08-22 18:59:05,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:05,409 INFO L93 Difference]: Finished difference Result 811 states and 914 transitions. [2020-08-22 18:59:05,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:59:05,409 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 193 [2020-08-22 18:59:05,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:05,414 INFO L225 Difference]: With dead ends: 811 [2020-08-22 18:59:05,415 INFO L226 Difference]: Without dead ends: 714 [2020-08-22 18:59:05,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-08-22 18:59:05,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-08-22 18:59:05,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 705. [2020-08-22 18:59:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-08-22 18:59:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 796 transitions. [2020-08-22 18:59:05,516 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 796 transitions. Word has length 193 [2020-08-22 18:59:05,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:05,516 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 796 transitions. [2020-08-22 18:59:05,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 18:59:05,516 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 796 transitions. [2020-08-22 18:59:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-22 18:59:05,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:05,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:05,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 18:59:05,521 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:05,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:05,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1742770590, now seen corresponding path program 1 times [2020-08-22 18:59:05,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:05,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055930618] [2020-08-22 18:59:05,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:05,526 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:05,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:05,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:59:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:59:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:05,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 18:59:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:05,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055930618] [2020-08-22 18:59:05,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:05,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 18:59:05,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413126962] [2020-08-22 18:59:05,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 18:59:05,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:05,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 18:59:05,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:59:05,772 INFO L87 Difference]: Start difference. First operand 705 states and 796 transitions. Second operand 8 states. [2020-08-22 18:59:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:07,811 INFO L93 Difference]: Finished difference Result 760 states and 853 transitions. [2020-08-22 18:59:07,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 18:59:07,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2020-08-22 18:59:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:07,816 INFO L225 Difference]: With dead ends: 760 [2020-08-22 18:59:07,816 INFO L226 Difference]: Without dead ends: 652 [2020-08-22 18:59:07,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-08-22 18:59:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-08-22 18:59:07,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 624. [2020-08-22 18:59:07,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-08-22 18:59:07,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 698 transitions. [2020-08-22 18:59:07,917 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 698 transitions. Word has length 197 [2020-08-22 18:59:07,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:07,918 INFO L479 AbstractCegarLoop]: Abstraction has 624 states and 698 transitions. [2020-08-22 18:59:07,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 18:59:07,918 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 698 transitions. [2020-08-22 18:59:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-22 18:59:07,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:07,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:07,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 18:59:07,922 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:07,922 INFO L82 PathProgramCache]: Analyzing trace with hash -759676943, now seen corresponding path program 1 times [2020-08-22 18:59:07,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:07,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762720484] [2020-08-22 18:59:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:07,926 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:08,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:08,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:59:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:08,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:59:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:08,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 18:59:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:08,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 18:59:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:08,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762720484] [2020-08-22 18:59:08,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:08,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:59:08,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168003020] [2020-08-22 18:59:08,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:59:08,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:08,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:59:08,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:59:08,285 INFO L87 Difference]: Start difference. First operand 624 states and 698 transitions. Second operand 14 states. [2020-08-22 18:59:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:10,565 INFO L93 Difference]: Finished difference Result 652 states and 728 transitions. [2020-08-22 18:59:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 18:59:10,566 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2020-08-22 18:59:10,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:10,571 INFO L225 Difference]: With dead ends: 652 [2020-08-22 18:59:10,571 INFO L226 Difference]: Without dead ends: 620 [2020-08-22 18:59:10,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-08-22 18:59:10,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-08-22 18:59:10,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 611. [2020-08-22 18:59:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-08-22 18:59:10,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 683 transitions. [2020-08-22 18:59:10,675 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 683 transitions. Word has length 204 [2020-08-22 18:59:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:10,676 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 683 transitions. [2020-08-22 18:59:10,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:59:10,676 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 683 transitions. [2020-08-22 18:59:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-08-22 18:59:10,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:10,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:10,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 18:59:10,680 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:10,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:10,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1349540408, now seen corresponding path program 1 times [2020-08-22 18:59:10,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:10,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894836325] [2020-08-22 18:59:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:10,684 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:10,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:10,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:59:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:10,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:59:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:10,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 18:59:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:10,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 18:59:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:11,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894836325] [2020-08-22 18:59:11,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:11,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 18:59:11,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324775497] [2020-08-22 18:59:11,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 18:59:11,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:11,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 18:59:11,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-22 18:59:11,074 INFO L87 Difference]: Start difference. First operand 611 states and 683 transitions. Second operand 13 states. [2020-08-22 18:59:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:13,564 INFO L93 Difference]: Finished difference Result 932 states and 1052 transitions. [2020-08-22 18:59:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 18:59:13,565 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2020-08-22 18:59:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:13,570 INFO L225 Difference]: With dead ends: 932 [2020-08-22 18:59:13,570 INFO L226 Difference]: Without dead ends: 793 [2020-08-22 18:59:13,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2020-08-22 18:59:13,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-08-22 18:59:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 625. [2020-08-22 18:59:13,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-08-22 18:59:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 701 transitions. [2020-08-22 18:59:13,674 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 701 transitions. Word has length 205 [2020-08-22 18:59:13,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:13,675 INFO L479 AbstractCegarLoop]: Abstraction has 625 states and 701 transitions. [2020-08-22 18:59:13,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 18:59:13,675 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 701 transitions. [2020-08-22 18:59:13,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-08-22 18:59:13,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:13,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:13,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 18:59:13,678 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:13,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:13,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1202059503, now seen corresponding path program 1 times [2020-08-22 18:59:13,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:13,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666438930] [2020-08-22 18:59:13,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:13,682 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:13,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:13,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:59:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:13,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:59:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:13,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 18:59:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:13,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 18:59:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:14,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666438930] [2020-08-22 18:59:14,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:14,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:59:14,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124515961] [2020-08-22 18:59:14,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:59:14,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:14,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:59:14,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-22 18:59:14,062 INFO L87 Difference]: Start difference. First operand 625 states and 701 transitions. Second operand 14 states. [2020-08-22 18:59:16,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:16,342 INFO L93 Difference]: Finished difference Result 653 states and 731 transitions. [2020-08-22 18:59:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 18:59:16,349 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 205 [2020-08-22 18:59:16,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:16,353 INFO L225 Difference]: With dead ends: 653 [2020-08-22 18:59:16,354 INFO L226 Difference]: Without dead ends: 604 [2020-08-22 18:59:16,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-08-22 18:59:16,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-08-22 18:59:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 595. [2020-08-22 18:59:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-08-22 18:59:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 650 transitions. [2020-08-22 18:59:16,450 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 650 transitions. Word has length 205 [2020-08-22 18:59:16,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:16,451 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 650 transitions. [2020-08-22 18:59:16,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:59:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 650 transitions. [2020-08-22 18:59:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-08-22 18:59:16,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:16,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:16,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 18:59:16,455 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:16,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1820990330, now seen corresponding path program 1 times [2020-08-22 18:59:16,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:16,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492014114] [2020-08-22 18:59:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:16,458 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:16,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:59:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:16,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 18:59:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:16,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 18:59:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:16,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-22 18:59:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 18:59:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:16,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 18:59:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:59:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:59:16,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492014114] [2020-08-22 18:59:16,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:59:16,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 18:59:16,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693658305] [2020-08-22 18:59:16,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 18:59:16,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:59:16,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 18:59:16,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:59:16,702 INFO L87 Difference]: Start difference. First operand 595 states and 650 transitions. Second operand 8 states. [2020-08-22 18:59:17,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:59:17,649 INFO L93 Difference]: Finished difference Result 718 states and 790 transitions. [2020-08-22 18:59:17,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 18:59:17,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-08-22 18:59:17,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:59:17,652 INFO L225 Difference]: With dead ends: 718 [2020-08-22 18:59:17,653 INFO L226 Difference]: Without dead ends: 622 [2020-08-22 18:59:17,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:59:17,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2020-08-22 18:59:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 591. [2020-08-22 18:59:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2020-08-22 18:59:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 643 transitions. [2020-08-22 18:59:17,746 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 643 transitions. Word has length 213 [2020-08-22 18:59:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:59:17,747 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 643 transitions. [2020-08-22 18:59:17,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 18:59:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 643 transitions. [2020-08-22 18:59:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-08-22 18:59:17,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:59:17,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:59:17,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 18:59:17,750 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:59:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:59:17,751 INFO L82 PathProgramCache]: Analyzing trace with hash 468800160, now seen corresponding path program 1 times [2020-08-22 18:59:17,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:59:17,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162224026] [2020-08-22 18:59:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:59:17,753 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:59:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:59:17,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:59:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:59:17,806 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:59:17,911 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:59:17,912 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:59:17,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 18:59:17,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:59:17 BoogieIcfgContainer [2020-08-22 18:59:17,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:59:17,956 INFO L168 Benchmark]: Toolchain (without parser) took 48611.31 ms. Allocated memory was 145.2 MB in the beginning and 719.3 MB in the end (delta: 574.1 MB). Free memory was 101.6 MB in the beginning and 327.3 MB in the end (delta: -225.6 MB). Peak memory consumption was 348.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:17,957 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 145.2 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:59:17,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.54 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 175.7 MB in the end (delta: -74.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:17,959 INFO L168 Benchmark]: Boogie Preprocessor took 78.62 ms. Allocated memory is still 202.9 MB. Free memory was 175.7 MB in the beginning and 172.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:17,960 INFO L168 Benchmark]: RCFGBuilder took 1359.41 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 172.3 MB in the beginning and 188.0 MB in the end (delta: -15.7 MB). Peak memory consumption was 89.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:17,960 INFO L168 Benchmark]: TraceAbstraction took 46475.87 ms. Allocated memory was 235.4 MB in the beginning and 719.3 MB in the end (delta: 483.9 MB). Free memory was 188.0 MB in the beginning and 327.3 MB in the end (delta: -139.3 MB). Peak memory consumption was 344.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:59:17,964 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 145.2 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 686.54 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 175.7 MB in the end (delta: -74.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.62 ms. Allocated memory is still 202.9 MB. Free memory was 175.7 MB in the beginning and 172.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1359.41 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 172.3 MB in the beginning and 188.0 MB in the end (delta: -15.7 MB). Peak memory consumption was 89.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46475.87 ms. Allocated memory was 235.4 MB in the beginning and 719.3 MB in the end (delta: 483.9 MB). Free memory was 188.0 MB in the beginning and 327.3 MB in the end (delta: -139.3 MB). Peak memory consumption was 344.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int KernelMode ; [L22] int Executive ; [L23] int DevicePowerState ; [L24] int s ; [L25] int UNLOADED ; [L26] int NP ; [L27] int DC ; [L28] int SKIP1 ; [L29] int SKIP2 ; [L30] int MPR1 ; [L31] int MPR3 ; [L32] int IPC ; [L33] int pended ; [L34] int compFptr ; [L35] int compRegistered ; [L36] int lowerDriverReturn ; [L37] int setEventCalled ; [L38] int customIrp ; [L39] int myStatus ; [L292] int status ; [L293] int irp = __VERIFIER_nondet_int() ; [L294] int pirp ; [L295] int pirp__IoStatus__Status ; [L296] int irp_choice = __VERIFIER_nondet_int() ; [L297] int devobj = __VERIFIER_nondet_int() ; [L298] int __cil_tmp8 ; [L300] KernelMode = 0 [L301] Executive = 0 [L302] DevicePowerState = 1 [L303] s = 0 [L304] UNLOADED = 0 [L305] NP = 0 [L306] DC = 0 [L307] SKIP1 = 0 [L308] SKIP2 = 0 [L309] MPR1 = 0 [L310] MPR3 = 0 [L311] IPC = 0 [L312] pended = 0 [L313] compFptr = 0 [L314] compRegistered = 0 [L315] lowerDriverReturn = 0 [L316] setEventCalled = 0 [L317] customIrp = 0 [L318] myStatus = 0 [L322] status = 0 [L323] pirp = irp [L324] CALL _BLAST_init() [L59] UNLOADED = 0 [L60] NP = 1 [L61] DC = 2 [L62] SKIP1 = 3 [L63] SKIP2 = 4 [L64] MPR1 = 5 [L65] MPR3 = 6 [L66] IPC = 7 [L67] s = UNLOADED [L68] pended = 0 [L69] compFptr = 0 [L70] compRegistered = 0 [L71] lowerDriverReturn = 0 [L72] setEventCalled = 0 [L73] customIrp = 0 [L324] RET _BLAST_init() [L326] COND TRUE status >= 0 [L327] s = NP [L328] customIrp = 0 [L329] setEventCalled = customIrp [L330] lowerDriverReturn = setEventCalled [L331] compRegistered = lowerDriverReturn [L332] pended = compRegistered [L333] pirp__IoStatus__Status = 0 [L334] myStatus = 0 [L335] COND FALSE !(irp_choice == 0) [L340] CALL stub_driver_init() [L45] s = NP [L46] pended = 0 [L47] compFptr = 0 [L48] compRegistered = 0 [L49] lowerDriverReturn = 0 [L50] setEventCalled = 0 [L51] customIrp = 0 [L340] RET stub_driver_init() [L343] COND FALSE !(status < 0) [L347] int tmp_ndt_1; [L348] tmp_ndt_1 = __VERIFIER_nondet_int() [L349] COND FALSE !(tmp_ndt_1 == 0) [L352] int tmp_ndt_2; [L353] tmp_ndt_2 = __VERIFIER_nondet_int() [L354] COND FALSE !(tmp_ndt_2 == 1) [L357] int tmp_ndt_3; [L358] tmp_ndt_3 = __VERIFIER_nondet_int() [L359] COND TRUE tmp_ndt_3 == 3 [L386] CALL, EXPR KbFilter_PnP(devobj, pirp) [L78] int devExt ; [L79] int irpStack ; [L80] int status ; [L81] int event = __VERIFIER_nondet_int() ; [L82] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L83] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L84] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L85] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L86] int devExt__Started ; [L87] int devExt__Removed ; [L88] int devExt__SurpriseRemoved ; [L89] int Irp__IoStatus__Status ; [L90] int Irp__IoStatus__Information ; [L91] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L92] int irpSp ; [L93] int nextIrpSp ; [L94] int nextIrpSp__Control ; [L95] int irpSp___0 ; [L96] int irpSp__Context ; [L97] int irpSp__Control ; [L98] long __cil_tmp23 ; [L101] status = 0 [L102] devExt = DeviceObject__DeviceExtension [L103] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L104] COND FALSE !(irpStack__MinorFunction == 0) [L107] COND FALSE !(irpStack__MinorFunction == 23) [L110] COND TRUE irpStack__MinorFunction == 2 [L234] devExt__Removed = 1 [L235] COND TRUE s == NP [L236] s = SKIP1 [L243] Irp__CurrentLocation ++ [L244] Irp__Tail__Overlay__CurrentStackLocation ++ [L245] CALL IofCallDriver(devExt__TopOfStack, Irp) [L481] int returnVal2 ; [L482] int compRetStatus ; [L483] int lcontext = __VERIFIER_nondet_int() ; [L484] long long __cil_tmp7 ; [L487] COND FALSE !(\read(compRegistered)) [L500] int tmp_ndt_6; [L501] tmp_ndt_6 = __VERIFIER_nondet_int() [L502] COND FALSE !(tmp_ndt_6 == 0) [L505] int tmp_ndt_7; [L506] tmp_ndt_7 = __VERIFIER_nondet_int() [L507] COND TRUE tmp_ndt_7 == 1 [L516] returnVal2 = -1073741823 [L526] COND FALSE !(s == NP) [L530] COND FALSE !(s == MPR1) [L539] COND TRUE s == SKIP1 [L540] s = SKIP2 [L541] lowerDriverReturn = returnVal2 [L549] return (returnVal2); [L245] RET IofCallDriver(devExt__TopOfStack, Irp) [L246] status = 0 [L288] return (status); [L386] RET, EXPR KbFilter_PnP(devobj, pirp) [L386] status = KbFilter_PnP(devobj, pirp) [L410] COND FALSE !(pended == 1) [L418] COND FALSE !(pended == 1) [L426] COND TRUE s != UNLOADED [L427] COND TRUE status != -1 [L428] COND FALSE !(s != SKIP2) [L438] COND FALSE !(pended == 1) [L445] COND FALSE !(s == DC) [L450] COND TRUE status != lowerDriverReturn [L451] CALL errorFn() [L1011] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 667 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.3s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 38.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9621 SDtfs, 17295 SDslu, 18105 SDs, 0 SdLazy, 30391 SolverSat, 1352 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 366 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=881occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 15 MinimizatonAttempts, 650 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 incorrect! Received shutdown request...