/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:01:51,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:01:51,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:01:51,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 23:01:51,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 23:01:51,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 23:01:51,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 23:01:51,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 23:01:51,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 23:01:51,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 23:01:51,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 23:01:51,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 23:01:51,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:01:51,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:01:51,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:01:51,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:01:51,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:01:51,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:01:51,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:01:51,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:01:51,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:01:51,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:01:51,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:01:51,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:01:51,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:01:51,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:01:51,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:01:51,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:01:51,595 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 23:01:51,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:01:51,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:01:51,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:01:51,606 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:01:51,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:01:51,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:01:51,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:01:51,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:01:51,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:01:51,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:01:51,607 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:01:51,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:01:51,608 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:01:51,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:01:51,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:01:51,608 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:01:51,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:01:51,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:01:51,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:01:51,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:01:51,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:01:51,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:01:51,610 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 23:01:51,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:01:51,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:01:51,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:01:51,931 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:01:51,932 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:01:51,932 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-22 23:01:52,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f443eda2/e7e3bd993fb2470c8ad77f50f0dbe807/FLAG6a1af3d24 [2020-08-22 23:01:52,543 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:01:52,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-22 23:01:52,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f443eda2/e7e3bd993fb2470c8ad77f50f0dbe807/FLAG6a1af3d24 [2020-08-22 23:01:52,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f443eda2/e7e3bd993fb2470c8ad77f50f0dbe807 [2020-08-22 23:01:52,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:01:52,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:01:52,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:01:52,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:01:52,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:01:52,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:52" (1/1) ... [2020-08-22 23:01:52,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2876d654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:52, skipping insertion in model container [2020-08-22 23:01:52,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:52" (1/1) ... [2020-08-22 23:01:52,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:01:52,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:01:53,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:01:53,178 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:01:53,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:01:53,350 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:01:53,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:53 WrapperNode [2020-08-22 23:01:53,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:01:53,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:01:53,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:01:53,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:01:53,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:53" (1/1) ... [2020-08-22 23:01:53,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:53" (1/1) ... [2020-08-22 23:01:53,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:53" (1/1) ... [2020-08-22 23:01:53,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:53" (1/1) ... [2020-08-22 23:01:53,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:53" (1/1) ... [2020-08-22 23:01:53,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:53" (1/1) ... [2020-08-22 23:01:53,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:53" (1/1) ... [2020-08-22 23:01:53,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:01:53,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:01:53,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:01:53,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:01:53,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:53" (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 23:01:53,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:01:53,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:01:53,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:01:53,464 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-08-22 23:01:53,464 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-08-22 23:01:53,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:01:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:01:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:01:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-08-22 23:01:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-08-22 23:01:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-08-22 23:01:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-08-22 23:01:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-08-22 23:01:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-08-22 23:01:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-08-22 23:01:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-08-22 23:01:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-22 23:01:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-08-22 23:01:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-22 23:01:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-08-22 23:01:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-08-22 23:01:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-22 23:01:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-08-22 23:01:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-08-22 23:01:53,467 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-08-22 23:01:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-08-22 23:01:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-08-22 23:01:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-08-22 23:01:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-08-22 23:01:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-08-22 23:01:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-08-22 23:01:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-08-22 23:01:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-08-22 23:01:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-08-22 23:01:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 23:01:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 23:01:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 23:01:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 23:01:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:01:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:01:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:01:54,013 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:01:54,014 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 23:01:54,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:54 BoogieIcfgContainer [2020-08-22 23:01:54,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:01:54,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:01:54,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:01:54,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:01:54,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:01:52" (1/3) ... [2020-08-22 23:01:54,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@963ca95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:54, skipping insertion in model container [2020-08-22 23:01:54,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:53" (2/3) ... [2020-08-22 23:01:54,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@963ca95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:54, skipping insertion in model container [2020-08-22 23:01:54,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:54" (3/3) ... [2020-08-22 23:01:54,035 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-22 23:01:54,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:01:54,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:01:54,067 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:01:54,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:01:54,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:01:54,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:01:54,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:01:54,089 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:01:54,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:01:54,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:01:54,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:01:54,107 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-08-22 23:01:54,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 23:01:54,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:54,120 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] [2020-08-22 23:01:54,121 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:54,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:54,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2116113079, now seen corresponding path program 1 times [2020-08-22 23:01:54,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:54,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295733782] [2020-08-22 23:01:54,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:54,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:54,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:01:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:54,365 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 23:01:54,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295733782] [2020-08-22 23:01:54,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:54,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 23:01:54,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603537325] [2020-08-22 23:01:54,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 23:01:54,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:54,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 23:01:54,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:01:54,419 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-08-22 23:01:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:54,724 INFO L93 Difference]: Finished difference Result 227 states and 257 transitions. [2020-08-22 23:01:54,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 23:01:54,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-08-22 23:01:54,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:54,736 INFO L225 Difference]: With dead ends: 227 [2020-08-22 23:01:54,736 INFO L226 Difference]: Without dead ends: 102 [2020-08-22 23:01:54,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:01:54,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-08-22 23:01:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-08-22 23:01:54,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-22 23:01:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2020-08-22 23:01:54,791 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 48 [2020-08-22 23:01:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:54,792 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2020-08-22 23:01:54,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 23:01:54,792 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2020-08-22 23:01:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 23:01:54,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:54,796 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] [2020-08-22 23:01:54,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:01:54,797 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:54,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1227098254, now seen corresponding path program 1 times [2020-08-22 23:01:54,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:54,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778510613] [2020-08-22 23:01:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:54,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:54,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 23:01:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:54,979 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 23:01:54,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778510613] [2020-08-22 23:01:54,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:54,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 23:01:54,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322647113] [2020-08-22 23:01:54,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 23:01:54,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:54,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 23:01:54,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 23:01:54,983 INFO L87 Difference]: Start difference. First operand 102 states and 111 transitions. Second operand 4 states. [2020-08-22 23:01:55,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:55,284 INFO L93 Difference]: Finished difference Result 189 states and 208 transitions. [2020-08-22 23:01:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 23:01:55,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-08-22 23:01:55,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:55,289 INFO L225 Difference]: With dead ends: 189 [2020-08-22 23:01:55,289 INFO L226 Difference]: Without dead ends: 103 [2020-08-22 23:01:55,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 23:01:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-08-22 23:01:55,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-08-22 23:01:55,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-22 23:01:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-08-22 23:01:55,324 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 60 [2020-08-22 23:01:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:55,325 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-08-22 23:01:55,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 23:01:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-08-22 23:01:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 23:01:55,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:55,336 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] [2020-08-22 23:01:55,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:01:55,337 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:55,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:55,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1578191403, now seen corresponding path program 1 times [2020-08-22 23:01:55,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:55,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733010047] [2020-08-22 23:01:55,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 23:01:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:55,566 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 23:01:55,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733010047] [2020-08-22 23:01:55,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:55,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 23:01:55,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14378442] [2020-08-22 23:01:55,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 23:01:55,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:55,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 23:01:55,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-22 23:01:55,569 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 8 states. [2020-08-22 23:01:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:56,033 INFO L93 Difference]: Finished difference Result 365 states and 410 transitions. [2020-08-22 23:01:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 23:01:56,035 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-08-22 23:01:56,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:56,045 INFO L225 Difference]: With dead ends: 365 [2020-08-22 23:01:56,046 INFO L226 Difference]: Without dead ends: 275 [2020-08-22 23:01:56,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-08-22 23:01:56,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-08-22 23:01:56,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 140. [2020-08-22 23:01:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-22 23:01:56,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 157 transitions. [2020-08-22 23:01:56,091 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 157 transitions. Word has length 62 [2020-08-22 23:01:56,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:56,092 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 157 transitions. [2020-08-22 23:01:56,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 23:01:56,092 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 157 transitions. [2020-08-22 23:01:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 23:01:56,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:56,095 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] [2020-08-22 23:01:56,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:01:56,096 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:56,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:56,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1116699365, now seen corresponding path program 1 times [2020-08-22 23:01:56,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:56,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400927187] [2020-08-22 23:01:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:56,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 23:01:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:56,276 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 23:01:56,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400927187] [2020-08-22 23:01:56,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:56,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 23:01:56,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782387559] [2020-08-22 23:01:56,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 23:01:56,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:56,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 23:01:56,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 23:01:56,282 INFO L87 Difference]: Start difference. First operand 140 states and 157 transitions. Second operand 10 states. [2020-08-22 23:01:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:56,852 INFO L93 Difference]: Finished difference Result 430 states and 486 transitions. [2020-08-22 23:01:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 23:01:56,856 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-08-22 23:01:56,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:56,858 INFO L225 Difference]: With dead ends: 430 [2020-08-22 23:01:56,859 INFO L226 Difference]: Without dead ends: 340 [2020-08-22 23:01:56,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-08-22 23:01:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-22 23:01:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 144. [2020-08-22 23:01:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-22 23:01:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 161 transitions. [2020-08-22 23:01:56,905 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 161 transitions. Word has length 65 [2020-08-22 23:01:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:56,905 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 161 transitions. [2020-08-22 23:01:56,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 23:01:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 161 transitions. [2020-08-22 23:01:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 23:01:56,912 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:56,912 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] [2020-08-22 23:01:56,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 23:01:56,916 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:56,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:56,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1492663361, now seen corresponding path program 1 times [2020-08-22 23:01:56,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:56,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211140049] [2020-08-22 23:01:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:56,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:56,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 23:01:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:56,992 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 23:01:56,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211140049] [2020-08-22 23:01:56,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:56,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 23:01:56,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877369815] [2020-08-22 23:01:56,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 23:01:56,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:56,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 23:01:56,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 23:01:56,995 INFO L87 Difference]: Start difference. First operand 144 states and 161 transitions. Second operand 4 states. [2020-08-22 23:01:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:57,192 INFO L93 Difference]: Finished difference Result 233 states and 260 transitions. [2020-08-22 23:01:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 23:01:57,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-08-22 23:01:57,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:57,195 INFO L225 Difference]: With dead ends: 233 [2020-08-22 23:01:57,195 INFO L226 Difference]: Without dead ends: 145 [2020-08-22 23:01:57,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 23:01:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-22 23:01:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-08-22 23:01:57,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-22 23:01:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2020-08-22 23:01:57,211 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 65 [2020-08-22 23:01:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:57,212 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2020-08-22 23:01:57,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 23:01:57,212 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2020-08-22 23:01:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 23:01:57,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:57,214 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] [2020-08-22 23:01:57,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 23:01:57,214 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:57,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1492389340, now seen corresponding path program 1 times [2020-08-22 23:01:57,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:57,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693794017] [2020-08-22 23:01:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:57,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 23:01:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:57,346 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 23:01:57,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693794017] [2020-08-22 23:01:57,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:57,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 23:01:57,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128134516] [2020-08-22 23:01:57,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 23:01:57,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:57,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 23:01:57,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-22 23:01:57,350 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand 10 states. [2020-08-22 23:01:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:57,819 INFO L93 Difference]: Finished difference Result 388 states and 434 transitions. [2020-08-22 23:01:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 23:01:57,820 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-08-22 23:01:57,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:57,823 INFO L225 Difference]: With dead ends: 388 [2020-08-22 23:01:57,823 INFO L226 Difference]: Without dead ends: 285 [2020-08-22 23:01:57,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-08-22 23:01:57,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-22 23:01:57,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 155. [2020-08-22 23:01:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 23:01:57,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 173 transitions. [2020-08-22 23:01:57,840 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 173 transitions. Word has length 67 [2020-08-22 23:01:57,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:57,840 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 173 transitions. [2020-08-22 23:01:57,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 23:01:57,841 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 173 transitions. [2020-08-22 23:01:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 23:01:57,842 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:57,842 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] [2020-08-22 23:01:57,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 23:01:57,843 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:57,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:57,843 INFO L82 PathProgramCache]: Analyzing trace with hash 122758570, now seen corresponding path program 1 times [2020-08-22 23:01:57,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:57,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040670586] [2020-08-22 23:01:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:57,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:57,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 23:01:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:57,991 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 23:01:57,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040670586] [2020-08-22 23:01:57,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:57,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 23:01:57,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955332842] [2020-08-22 23:01:57,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 23:01:57,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:57,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 23:01:57,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-22 23:01:57,995 INFO L87 Difference]: Start difference. First operand 155 states and 173 transitions. Second operand 12 states. [2020-08-22 23:01:58,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:58,583 INFO L93 Difference]: Finished difference Result 425 states and 477 transitions. [2020-08-22 23:01:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 23:01:58,584 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-08-22 23:01:58,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:58,586 INFO L225 Difference]: With dead ends: 425 [2020-08-22 23:01:58,587 INFO L226 Difference]: Without dead ends: 322 [2020-08-22 23:01:58,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-08-22 23:01:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-22 23:01:58,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 136. [2020-08-22 23:01:58,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-22 23:01:58,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2020-08-22 23:01:58,600 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 70 [2020-08-22 23:01:58,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:58,601 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2020-08-22 23:01:58,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 23:01:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2020-08-22 23:01:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-22 23:01:58,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:58,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:58,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 23:01:58,603 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:58,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:58,603 INFO L82 PathProgramCache]: Analyzing trace with hash -272178825, now seen corresponding path program 1 times [2020-08-22 23:01:58,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:58,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779139929] [2020-08-22 23:01:58,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:58,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:58,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 23:01:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:58,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779139929] [2020-08-22 23:01:58,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:58,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 23:01:58,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899479384] [2020-08-22 23:01:58,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 23:01:58,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:58,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 23:01:58,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 23:01:58,685 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand 4 states. [2020-08-22 23:01:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:58,829 INFO L93 Difference]: Finished difference Result 226 states and 251 transitions. [2020-08-22 23:01:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 23:01:58,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-08-22 23:01:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:58,831 INFO L225 Difference]: With dead ends: 226 [2020-08-22 23:01:58,832 INFO L226 Difference]: Without dead ends: 137 [2020-08-22 23:01:58,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 23:01:58,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-22 23:01:58,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-08-22 23:01:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-22 23:01:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 151 transitions. [2020-08-22 23:01:58,843 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 151 transitions. Word has length 72 [2020-08-22 23:01:58,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:58,845 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 151 transitions. [2020-08-22 23:01:58,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 23:01:58,848 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 151 transitions. [2020-08-22 23:01:58,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-22 23:01:58,849 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:58,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:58,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 23:01:58,850 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:58,860 INFO L82 PathProgramCache]: Analyzing trace with hash 588909148, now seen corresponding path program 1 times [2020-08-22 23:01:58,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:58,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26271984] [2020-08-22 23:01:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:59,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:59,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 23:01:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:59,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26271984] [2020-08-22 23:01:59,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:01:59,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 23:01:59,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518403638] [2020-08-22 23:01:59,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 23:01:59,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:59,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 23:01:59,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 23:01:59,049 INFO L87 Difference]: Start difference. First operand 137 states and 151 transitions. Second operand 10 states. [2020-08-22 23:01:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:59,585 INFO L93 Difference]: Finished difference Result 389 states and 436 transitions. [2020-08-22 23:01:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 23:01:59,586 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-08-22 23:01:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:59,592 INFO L225 Difference]: With dead ends: 389 [2020-08-22 23:01:59,592 INFO L226 Difference]: Without dead ends: 296 [2020-08-22 23:01:59,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-08-22 23:01:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-22 23:01:59,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 200. [2020-08-22 23:01:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-08-22 23:01:59,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 223 transitions. [2020-08-22 23:01:59,617 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 223 transitions. Word has length 72 [2020-08-22 23:01:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:59,618 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 223 transitions. [2020-08-22 23:01:59,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 23:01:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 223 transitions. [2020-08-22 23:01:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-22 23:01:59,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:59,620 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:59,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 23:01:59,621 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:59,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:59,622 INFO L82 PathProgramCache]: Analyzing trace with hash 69190993, now seen corresponding path program 1 times [2020-08-22 23:01:59,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:59,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402327861] [2020-08-22 23:01:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:59,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:59,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 23:01:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 23:01:59,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402327861] [2020-08-22 23:01:59,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:59,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 23:01:59,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565813733] [2020-08-22 23:01:59,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 23:01:59,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:59,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 23:01:59,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 23:01:59,792 INFO L87 Difference]: Start difference. First operand 200 states and 223 transitions. Second operand 8 states. [2020-08-22 23:02:00,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:00,182 INFO L93 Difference]: Finished difference Result 288 states and 323 transitions. [2020-08-22 23:02:00,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 23:02:00,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-22 23:02:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:00,185 INFO L225 Difference]: With dead ends: 288 [2020-08-22 23:02:00,185 INFO L226 Difference]: Without dead ends: 286 [2020-08-22 23:02:00,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-08-22 23:02:00,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-22 23:02:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 254. [2020-08-22 23:02:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-08-22 23:02:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 285 transitions. [2020-08-22 23:02:00,206 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 285 transitions. Word has length 73 [2020-08-22 23:02:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:00,207 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 285 transitions. [2020-08-22 23:02:00,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 23:02:00,207 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 285 transitions. [2020-08-22 23:02:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 23:02:00,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:00,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:00,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 23:02:00,210 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:00,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:00,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1474625812, now seen corresponding path program 1 times [2020-08-22 23:02:00,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:00,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180233139] [2020-08-22 23:02:00,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:00,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 23:02:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:02:00,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180233139] [2020-08-22 23:02:00,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:02:00,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 23:02:00,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786525788] [2020-08-22 23:02:00,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 23:02:00,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:00,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 23:02:00,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 23:02:00,343 INFO L87 Difference]: Start difference. First operand 254 states and 285 transitions. Second operand 12 states. [2020-08-22 23:02:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:01,036 INFO L93 Difference]: Finished difference Result 460 states and 517 transitions. [2020-08-22 23:02:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 23:02:01,037 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-08-22 23:02:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:01,042 INFO L225 Difference]: With dead ends: 460 [2020-08-22 23:02:01,043 INFO L226 Difference]: Without dead ends: 367 [2020-08-22 23:02:01,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-08-22 23:02:01,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-22 23:02:01,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 258. [2020-08-22 23:02:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-22 23:02:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 289 transitions. [2020-08-22 23:02:01,064 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 289 transitions. Word has length 75 [2020-08-22 23:02:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:01,065 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 289 transitions. [2020-08-22 23:02:01,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 23:02:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 289 transitions. [2020-08-22 23:02:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-22 23:02:01,067 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:01,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:01,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 23:02:01,067 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:01,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:01,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1908172287, now seen corresponding path program 1 times [2020-08-22 23:02:01,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:01,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494491509] [2020-08-22 23:02:01,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:01,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:01,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 23:02:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 23:02:01,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494491509] [2020-08-22 23:02:01,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:01,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 23:02:01,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908893061] [2020-08-22 23:02:01,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 23:02:01,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:01,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 23:02:01,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 23:02:01,156 INFO L87 Difference]: Start difference. First operand 258 states and 289 transitions. Second operand 8 states. [2020-08-22 23:02:01,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:01,655 INFO L93 Difference]: Finished difference Result 432 states and 485 transitions. [2020-08-22 23:02:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 23:02:01,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-08-22 23:02:01,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:01,658 INFO L225 Difference]: With dead ends: 432 [2020-08-22 23:02:01,658 INFO L226 Difference]: Without dead ends: 339 [2020-08-22 23:02:01,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-08-22 23:02:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-08-22 23:02:01,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 258. [2020-08-22 23:02:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-22 23:02:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 289 transitions. [2020-08-22 23:02:01,693 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 289 transitions. Word has length 76 [2020-08-22 23:02:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:01,693 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 289 transitions. [2020-08-22 23:02:01,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 23:02:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 289 transitions. [2020-08-22 23:02:01,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-22 23:02:01,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:01,696 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:01,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 23:02:01,697 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:01,697 INFO L82 PathProgramCache]: Analyzing trace with hash 116425250, now seen corresponding path program 1 times [2020-08-22 23:02:01,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:01,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335741855] [2020-08-22 23:02:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:01,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 23:02:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 23:02:01,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335741855] [2020-08-22 23:02:01,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:01,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:02:01,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633869509] [2020-08-22 23:02:01,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:02:01,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:01,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:02:01,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:02:01,772 INFO L87 Difference]: Start difference. First operand 258 states and 289 transitions. Second operand 5 states. [2020-08-22 23:02:01,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:01,987 INFO L93 Difference]: Finished difference Result 369 states and 412 transitions. [2020-08-22 23:02:01,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:02:01,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-08-22 23:02:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:01,991 INFO L225 Difference]: With dead ends: 369 [2020-08-22 23:02:01,991 INFO L226 Difference]: Without dead ends: 280 [2020-08-22 23:02:01,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:02:01,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-08-22 23:02:02,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 260. [2020-08-22 23:02:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-08-22 23:02:02,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 291 transitions. [2020-08-22 23:02:02,021 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 291 transitions. Word has length 76 [2020-08-22 23:02:02,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:02,021 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 291 transitions. [2020-08-22 23:02:02,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:02:02,022 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 291 transitions. [2020-08-22 23:02:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 23:02:02,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:02,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:02,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 23:02:02,024 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:02,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:02,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1122457453, now seen corresponding path program 1 times [2020-08-22 23:02:02,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:02,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132762288] [2020-08-22 23:02:02,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:02,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:02,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 23:02:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 23:02:02,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132762288] [2020-08-22 23:02:02,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:02,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 23:02:02,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577382611] [2020-08-22 23:02:02,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 23:02:02,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:02,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 23:02:02,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:02:02,132 INFO L87 Difference]: Start difference. First operand 260 states and 291 transitions. Second operand 6 states. [2020-08-22 23:02:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:02,376 INFO L93 Difference]: Finished difference Result 411 states and 459 transitions. [2020-08-22 23:02:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 23:02:02,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-08-22 23:02:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:02,379 INFO L225 Difference]: With dead ends: 411 [2020-08-22 23:02:02,381 INFO L226 Difference]: Without dead ends: 297 [2020-08-22 23:02:02,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-22 23:02:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-08-22 23:02:02,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 253. [2020-08-22 23:02:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-08-22 23:02:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 281 transitions. [2020-08-22 23:02:02,400 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 281 transitions. Word has length 77 [2020-08-22 23:02:02,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:02,401 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 281 transitions. [2020-08-22 23:02:02,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 23:02:02,401 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 281 transitions. [2020-08-22 23:02:02,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 23:02:02,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:02,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:02,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 23:02:02,403 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:02,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:02,403 INFO L82 PathProgramCache]: Analyzing trace with hash 2031617893, now seen corresponding path program 1 times [2020-08-22 23:02:02,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:02,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733684139] [2020-08-22 23:02:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:02,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 23:02:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 23:02:02,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733684139] [2020-08-22 23:02:02,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:02,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 23:02:02,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939241019] [2020-08-22 23:02:02,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 23:02:02,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:02,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 23:02:02,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 23:02:02,503 INFO L87 Difference]: Start difference. First operand 253 states and 281 transitions. Second operand 8 states. [2020-08-22 23:02:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:02,834 INFO L93 Difference]: Finished difference Result 521 states and 577 transitions. [2020-08-22 23:02:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 23:02:02,835 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-22 23:02:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:02,838 INFO L225 Difference]: With dead ends: 521 [2020-08-22 23:02:02,838 INFO L226 Difference]: Without dead ends: 331 [2020-08-22 23:02:02,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-08-22 23:02:02,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-08-22 23:02:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 264. [2020-08-22 23:02:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-22 23:02:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 292 transitions. [2020-08-22 23:02:02,860 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 292 transitions. Word has length 78 [2020-08-22 23:02:02,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:02,861 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 292 transitions. [2020-08-22 23:02:02,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 23:02:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 292 transitions. [2020-08-22 23:02:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 23:02:02,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:02,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:02,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 23:02:02,863 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:02,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:02,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1446971750, now seen corresponding path program 1 times [2020-08-22 23:02:02,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:02,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228563426] [2020-08-22 23:02:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:02,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:02,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 23:02:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:02:02,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228563426] [2020-08-22 23:02:02,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:02:02,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 23:02:02,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029198396] [2020-08-22 23:02:02,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 23:02:02,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:02,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 23:02:02,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 23:02:02,959 INFO L87 Difference]: Start difference. First operand 264 states and 292 transitions. Second operand 10 states. [2020-08-22 23:02:03,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:03,493 INFO L93 Difference]: Finished difference Result 599 states and 665 transitions. [2020-08-22 23:02:03,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 23:02:03,494 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-08-22 23:02:03,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:03,499 INFO L225 Difference]: With dead ends: 599 [2020-08-22 23:02:03,500 INFO L226 Difference]: Without dead ends: 435 [2020-08-22 23:02:03,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-08-22 23:02:03,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-08-22 23:02:03,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 355. [2020-08-22 23:02:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-08-22 23:02:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 393 transitions. [2020-08-22 23:02:03,534 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 393 transitions. Word has length 79 [2020-08-22 23:02:03,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:03,535 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 393 transitions. [2020-08-22 23:02:03,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 23:02:03,535 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 393 transitions. [2020-08-22 23:02:03,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-22 23:02:03,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:03,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:03,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 23:02:03,537 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:03,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:03,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1140392269, now seen corresponding path program 2 times [2020-08-22 23:02:03,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:03,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939694136] [2020-08-22 23:02:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:03,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:03,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 23:02:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:02:03,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939694136] [2020-08-22 23:02:03,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:02:03,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 23:02:03,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124645256] [2020-08-22 23:02:03,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 23:02:03,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:03,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 23:02:03,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 23:02:03,682 INFO L87 Difference]: Start difference. First operand 355 states and 393 transitions. Second operand 12 states. [2020-08-22 23:02:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:04,428 INFO L93 Difference]: Finished difference Result 694 states and 770 transitions. [2020-08-22 23:02:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 23:02:04,428 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-08-22 23:02:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:04,432 INFO L225 Difference]: With dead ends: 694 [2020-08-22 23:02:04,432 INFO L226 Difference]: Without dead ends: 525 [2020-08-22 23:02:04,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-08-22 23:02:04,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-08-22 23:02:04,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 390. [2020-08-22 23:02:04,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-08-22 23:02:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 432 transitions. [2020-08-22 23:02:04,465 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 432 transitions. Word has length 82 [2020-08-22 23:02:04,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:04,466 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 432 transitions. [2020-08-22 23:02:04,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 23:02:04,466 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 432 transitions. [2020-08-22 23:02:04,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 23:02:04,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:04,468 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:04,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 23:02:04,468 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:04,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:04,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1836590973, now seen corresponding path program 2 times [2020-08-22 23:02:04,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:04,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908044961] [2020-08-22 23:02:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:04,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 23:02:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:02:04,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908044961] [2020-08-22 23:02:04,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:02:04,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 23:02:04,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617058817] [2020-08-22 23:02:04,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 23:02:04,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:04,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 23:02:04,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-22 23:02:04,628 INFO L87 Difference]: Start difference. First operand 390 states and 432 transitions. Second operand 14 states. [2020-08-22 23:02:05,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:05,747 INFO L93 Difference]: Finished difference Result 680 states and 754 transitions. [2020-08-22 23:02:05,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 23:02:05,748 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-08-22 23:02:05,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:05,751 INFO L225 Difference]: With dead ends: 680 [2020-08-22 23:02:05,751 INFO L226 Difference]: Without dead ends: 428 [2020-08-22 23:02:05,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2020-08-22 23:02:05,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-08-22 23:02:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 247. [2020-08-22 23:02:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-22 23:02:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 270 transitions. [2020-08-22 23:02:05,776 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 270 transitions. Word has length 85 [2020-08-22 23:02:05,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:05,776 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 270 transitions. [2020-08-22 23:02:05,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 23:02:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 270 transitions. [2020-08-22 23:02:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 23:02:05,778 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:05,778 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:05,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 23:02:05,778 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:05,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1723821108, now seen corresponding path program 2 times [2020-08-22 23:02:05,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:05,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777275254] [2020-08-22 23:02:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:05,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:02:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:05,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 23:02:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:02:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-22 23:02:05,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777275254] [2020-08-22 23:02:05,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:02:05,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 23:02:05,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837046412] [2020-08-22 23:02:05,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 23:02:05,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:02:05,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 23:02:05,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:02:05,842 INFO L87 Difference]: Start difference. First operand 247 states and 270 transitions. Second operand 6 states. [2020-08-22 23:02:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:02:06,112 INFO L93 Difference]: Finished difference Result 387 states and 425 transitions. [2020-08-22 23:02:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:02:06,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-08-22 23:02:06,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:02:06,115 INFO L225 Difference]: With dead ends: 387 [2020-08-22 23:02:06,115 INFO L226 Difference]: Without dead ends: 290 [2020-08-22 23:02:06,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 23:02:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-08-22 23:02:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 247. [2020-08-22 23:02:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-22 23:02:06,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 269 transitions. [2020-08-22 23:02:06,142 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 269 transitions. Word has length 90 [2020-08-22 23:02:06,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:02:06,143 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 269 transitions. [2020-08-22 23:02:06,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 23:02:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 269 transitions. [2020-08-22 23:02:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 23:02:06,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:02:06,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:06,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 23:02:06,146 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:02:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:02:06,146 INFO L82 PathProgramCache]: Analyzing trace with hash 888855281, now seen corresponding path program 1 times [2020-08-22 23:02:06,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:02:06,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442875418] [2020-08-22 23:02:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:02:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:02:06,163 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:02:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:02:06,178 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:02:06,222 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 23:02:06,223 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 23:02:06,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 23:02:06,280 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,285 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,287 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,287 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,288 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,288 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,289 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,289 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,290 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,290 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,291 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,291 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,292 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,293 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,294 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,294 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,294 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,295 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,295 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,296 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,296 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,296 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,297 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,298 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-08-22 23:02:06,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:02:06 BoogieIcfgContainer [2020-08-22 23:02:06,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:02:06,319 INFO L168 Benchmark]: Toolchain (without parser) took 13425.58 ms. Allocated memory was 144.2 MB in the beginning and 382.2 MB in the end (delta: 238.0 MB). Free memory was 100.9 MB in the beginning and 241.4 MB in the end (delta: -140.5 MB). Peak memory consumption was 97.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,320 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 144.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 457.16 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 100.6 MB in the beginning and 176.8 MB in the end (delta: -76.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,322 INFO L168 Benchmark]: Boogie Preprocessor took 49.98 ms. Allocated memory is still 200.3 MB. Free memory was 176.8 MB in the beginning and 174.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,324 INFO L168 Benchmark]: RCFGBuilder took 619.04 ms. Allocated memory is still 200.3 MB. Free memory was 174.1 MB in the beginning and 142.0 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,324 INFO L168 Benchmark]: TraceAbstraction took 12293.34 ms. Allocated memory was 200.3 MB in the beginning and 382.2 MB in the end (delta: 181.9 MB). Free memory was 141.3 MB in the beginning and 241.4 MB in the end (delta: -100.1 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. [2020-08-22 23:02:06,332 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 144.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 457.16 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 100.6 MB in the beginning and 176.8 MB in the end (delta: -76.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.98 ms. Allocated memory is still 200.3 MB. Free memory was 176.8 MB in the beginning and 174.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 619.04 ms. Allocated memory is still 200.3 MB. Free memory was 174.1 MB in the beginning and 142.0 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12293.34 ms. Allocated memory was 200.3 MB in the beginning and 382.2 MB in the end (delta: 181.9 MB). Free memory was 141.3 MB in the beginning and 241.4 MB in the end (delta: -100.1 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] char A [2 + 2 + 4 +1]; VAL [A={4:0}] [L75] A[2 + 2 + 4] = 0 VAL [A={4:0}] [L76] CALL parse_expression_list (A) VAL [str={4:0}] [L48] int start=0, i=-1, j=-1; VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}] [L49] char str2[2]; VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L50] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L52] i++ VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L53] str[i] VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=40] [L54] case 0: VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=40] [L69] EXPR str[i] VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=40] [L69] COND TRUE str[i] != 0 VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=40] [L52] i++ VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L53] str[i] VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=37] [L54] case 0: VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=37] [L69] EXPR str[i] VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=37] [L69] COND TRUE str[i] != 0 VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=37] [L52] i++ VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}] [L53] str[i] VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L54] case 0: VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L55] EXPR str[start] VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=40] [L55] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=40] [L55] EXPR str[start] VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=40, str[start]=40] [L55] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=40, str[start]=40] [L55] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=40, str[start]=40] [L56] EXPR str[start] VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=40] [L56] COND FALSE !(str[start] == '"') VAL [i=2, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[start]=40] [L57] j = i-1 VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L58] EXPR str[j] VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=37] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=37] [L58] EXPR str[j] VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=37, str[j]=37] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=37, str[j]=37] [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=37, str[j]=37] [L58] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=37, str[j]=37] [L59] (0 < j) && (str[j] == '"') VAL [(0 < j) && (str[j] == '"')=1, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L59] EXPR str[j] VAL [(0 < j) && (str[j] == '"')=1, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=37] [L59] (0 < j) && (str[j] == '"') VAL [(0 < j) && (str[j] == '"')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=37] [L59] COND FALSE !((0 < j) && (str[j] == '"')) VAL [(0 < j) && (str[j] == '"')=0, i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0, str[j]=37] [L60] COND TRUE start<=j VAL [i=2, j=1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L61] CALL r_strncpy(str2, str+start, j-start+1) VAL [\old(n)=2, dest={3:0}, src={4:0}] [L30] return strncpy(dest,src,n); VAL [\old(n)=2, \result={36:38}, dest={3:0}, dest={3:0}, n=2, src={4:0}, src={4:0}, strncpy(dest,src,n)={36:38}] [L61] RET r_strncpy(str2, str+start, j-start+1) VAL [i=2, j=1, r_strncpy(str2, str+start, j-start+1)={36:38}, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=0] [L62] CALL __VERIFIER_assert(j - start + 1 < 2) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 123 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.1s, OverallIterations: 20, TraceHistogramMax: 3, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2560 SDtfs, 3581 SDslu, 9424 SDs, 0 SdLazy, 6214 SolverSat, 277 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=390occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 19 MinimizatonAttempts, 1535 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1464 NumberOfCodeBlocks, 1464 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1353 ConstructedInterpolants, 0 QuantifiedInterpolants, 257869 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 60/100 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...