/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:57:20,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:57:20,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:57:20,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:57:20,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:57:20,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:57:20,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:57:20,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:57:20,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:57:20,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:57:20,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:57:20,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:57:20,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:57:20,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:57:20,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:57:20,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:57:20,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:57:20,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:57:20,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:57:20,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:57:20,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:57:20,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:57:20,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:57:20,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:57:20,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:57:20,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:57:20,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:57:20,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:57:20,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:57:20,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:57:20,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:57:20,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:57:20,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:57:20,934 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:57:20,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:57:20,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:57:20,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:57:20,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:57:20,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:57:20,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:57:20,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:57:20,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:57:20,937 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:57:20,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:57:20,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:57:20,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:57:20,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:57:20,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:57:20,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:57:20,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:57:20,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:57:20,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:57:20,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:57:20,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:57:20,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:57:20,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:57:20,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:57:20,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:57:20,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:57:21,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:57:21,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:57:21,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:57:21,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:57:21,237 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:57:21,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-22 16:57:21,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6659d29b/5f75f8551b5e41a3a1728b2000248a66/FLAG17107137e [2020-08-22 16:57:21,797 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:57:21,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-22 16:57:21,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6659d29b/5f75f8551b5e41a3a1728b2000248a66/FLAG17107137e [2020-08-22 16:57:22,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6659d29b/5f75f8551b5e41a3a1728b2000248a66 [2020-08-22 16:57:22,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:57:22,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:57:22,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:22,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:57:22,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:57:22,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db7b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22, skipping insertion in model container [2020-08-22 16:57:22,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:57:22,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:57:22,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:22,429 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:57:22,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:57:22,563 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:57:22,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22 WrapperNode [2020-08-22 16:57:22,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:57:22,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:57:22,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:57:22,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:57:22,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (1/1) ... [2020-08-22 16:57:22,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:57:22,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:57:22,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:57:22,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:57:22,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (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 16:57:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:57:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:57:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:57:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-08-22 16:57:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-08-22 16:57:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:57:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:57:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:57:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-08-22 16:57:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-08-22 16:57:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-08-22 16:57:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-08-22 16:57:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-08-22 16:57:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-08-22 16:57:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-08-22 16:57:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-08-22 16:57:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-22 16:57:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-08-22 16:57:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-22 16:57:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-08-22 16:57:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-08-22 16:57:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-22 16:57:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-08-22 16:57:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-08-22 16:57:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-08-22 16:57:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-08-22 16:57:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-08-22 16:57:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-08-22 16:57:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-08-22 16:57:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-08-22 16:57:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-08-22 16:57:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-08-22 16:57:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-08-22 16:57:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-08-22 16:57:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:57:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:57:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:57:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:57:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:57:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:57:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:57:23,104 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:57:23,104 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 16:57:23,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:23 BoogieIcfgContainer [2020-08-22 16:57:23,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:57:23,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:57:23,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:57:23,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:57:23,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:57:22" (1/3) ... [2020-08-22 16:57:23,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da0565c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:23, skipping insertion in model container [2020-08-22 16:57:23,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:57:22" (2/3) ... [2020-08-22 16:57:23,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da0565c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:57:23, skipping insertion in model container [2020-08-22 16:57:23,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:57:23" (3/3) ... [2020-08-22 16:57:23,117 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-08-22 16:57:23,127 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:57:23,134 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:57:23,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:57:23,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:57:23,174 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:57:23,175 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:57:23,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:57:23,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:57:23,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:57:23,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:57:23,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:57:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-22 16:57:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 16:57:23,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:23,203 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] [2020-08-22 16:57:23,204 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:23,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:23,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2018987797, now seen corresponding path program 1 times [2020-08-22 16:57:23,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:23,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461867960] [2020-08-22 16:57:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-22 16:57:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:23,464 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 16:57:23,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461867960] [2020-08-22 16:57:23,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:23,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:57:23,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517532494] [2020-08-22 16:57:23,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:57:23,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:23,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:57:23,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:57:23,491 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-08-22 16:57:23,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:23,666 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2020-08-22 16:57:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:57:23,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-08-22 16:57:23,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:23,678 INFO L225 Difference]: With dead ends: 93 [2020-08-22 16:57:23,678 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 16:57:23,682 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 16:57:23,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 16:57:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-22 16:57:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 16:57:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-08-22 16:57:23,728 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2020-08-22 16:57:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:23,728 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-08-22 16:57:23,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:57:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-08-22 16:57:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 16:57:23,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:23,730 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] [2020-08-22 16:57:23,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:57:23,731 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:23,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:23,732 INFO L82 PathProgramCache]: Analyzing trace with hash -171780126, now seen corresponding path program 1 times [2020-08-22 16:57:23,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:23,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297000897] [2020-08-22 16:57:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:23,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 16:57:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:23,814 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 16:57:23,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297000897] [2020-08-22 16:57:23,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:23,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:57:23,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107769632] [2020-08-22 16:57:23,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:57:23,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:23,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:57:23,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:57:23,819 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2020-08-22 16:57:23,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:23,944 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-08-22 16:57:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:57:23,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-08-22 16:57:23,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:23,947 INFO L225 Difference]: With dead ends: 78 [2020-08-22 16:57:23,947 INFO L226 Difference]: Without dead ends: 44 [2020-08-22 16:57:23,948 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 16:57:23,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-22 16:57:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-22 16:57:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-22 16:57:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-22 16:57:23,959 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-08-22 16:57:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:23,959 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-22 16:57:23,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:57:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-22 16:57:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 16:57:23,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:23,961 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] [2020-08-22 16:57:23,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:57:23,962 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:23,963 INFO L82 PathProgramCache]: Analyzing trace with hash 250921700, now seen corresponding path program 1 times [2020-08-22 16:57:23,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:23,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445857363] [2020-08-22 16:57:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:24,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 16:57:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:24,189 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 16:57:24,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445857363] [2020-08-22 16:57:24,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:24,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 16:57:24,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749642346] [2020-08-22 16:57:24,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:57:24,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:24,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:57:24,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:57:24,193 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 8 states. [2020-08-22 16:57:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:24,537 INFO L93 Difference]: Finished difference Result 140 states and 187 transitions. [2020-08-22 16:57:24,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 16:57:24,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-08-22 16:57:24,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:24,542 INFO L225 Difference]: With dead ends: 140 [2020-08-22 16:57:24,542 INFO L226 Difference]: Without dead ends: 91 [2020-08-22 16:57:24,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-08-22 16:57:24,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-22 16:57:24,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-08-22 16:57:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-22 16:57:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2020-08-22 16:57:24,561 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 33 [2020-08-22 16:57:24,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:24,562 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2020-08-22 16:57:24,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:57:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2020-08-22 16:57:24,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 16:57:24,563 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:24,564 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] [2020-08-22 16:57:24,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:57:24,564 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:24,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:24,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1743223006, now seen corresponding path program 1 times [2020-08-22 16:57:24,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:24,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144217453] [2020-08-22 16:57:24,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:24,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 16:57:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:24,665 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 16:57:24,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144217453] [2020-08-22 16:57:24,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:24,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 16:57:24,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571603547] [2020-08-22 16:57:24,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:57:24,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:24,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:57:24,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:57:24,668 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 7 states. [2020-08-22 16:57:24,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:24,896 INFO L93 Difference]: Finished difference Result 136 states and 180 transitions. [2020-08-22 16:57:24,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:57:24,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-22 16:57:24,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:24,899 INFO L225 Difference]: With dead ends: 136 [2020-08-22 16:57:24,899 INFO L226 Difference]: Without dead ends: 92 [2020-08-22 16:57:24,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:57:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-22 16:57:24,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2020-08-22 16:57:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 16:57:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-08-22 16:57:24,913 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 33 [2020-08-22 16:57:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:24,914 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-08-22 16:57:24,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:57:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-08-22 16:57:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 16:57:24,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:24,916 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] [2020-08-22 16:57:24,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 16:57:24,917 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:24,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:24,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1042158428, now seen corresponding path program 1 times [2020-08-22 16:57:24,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:24,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373857319] [2020-08-22 16:57:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:24,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:24,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 16:57:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:25,009 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 16:57:25,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373857319] [2020-08-22 16:57:25,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:25,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:57:25,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007021710] [2020-08-22 16:57:25,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:57:25,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:25,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:57:25,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:57:25,013 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 6 states. [2020-08-22 16:57:25,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:25,227 INFO L93 Difference]: Finished difference Result 138 states and 179 transitions. [2020-08-22 16:57:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:57:25,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-22 16:57:25,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:25,229 INFO L225 Difference]: With dead ends: 138 [2020-08-22 16:57:25,229 INFO L226 Difference]: Without dead ends: 89 [2020-08-22 16:57:25,230 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 16:57:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-08-22 16:57:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-08-22 16:57:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-22 16:57:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2020-08-22 16:57:25,239 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 33 [2020-08-22 16:57:25,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:25,240 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2020-08-22 16:57:25,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:57:25,240 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2020-08-22 16:57:25,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 16:57:25,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:25,241 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] [2020-08-22 16:57:25,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 16:57:25,242 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:25,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:25,242 INFO L82 PathProgramCache]: Analyzing trace with hash -151257089, now seen corresponding path program 1 times [2020-08-22 16:57:25,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:25,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545320663] [2020-08-22 16:57:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:25,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:25,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 16:57:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:25,307 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 16:57:25,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545320663] [2020-08-22 16:57:25,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:25,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:57:25,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012896708] [2020-08-22 16:57:25,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:57:25,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:25,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:57:25,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:57:25,309 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand 5 states. [2020-08-22 16:57:25,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:25,404 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2020-08-22 16:57:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:57:25,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-08-22 16:57:25,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:25,406 INFO L225 Difference]: With dead ends: 124 [2020-08-22 16:57:25,407 INFO L226 Difference]: Without dead ends: 89 [2020-08-22 16:57:25,407 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 16:57:25,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-08-22 16:57:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-08-22 16:57:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-08-22 16:57:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-08-22 16:57:25,416 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 35 [2020-08-22 16:57:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:25,417 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-08-22 16:57:25,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:57:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-08-22 16:57:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 16:57:25,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:25,419 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] [2020-08-22 16:57:25,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 16:57:25,419 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:25,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:25,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1172325443, now seen corresponding path program 1 times [2020-08-22 16:57:25,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:25,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819131365] [2020-08-22 16:57:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:25,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:25,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 16:57:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:25,487 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 16:57:25,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819131365] [2020-08-22 16:57:25,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:25,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 16:57:25,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996011285] [2020-08-22 16:57:25,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:57:25,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:25,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:57:25,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:57:25,489 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 7 states. [2020-08-22 16:57:25,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:25,640 INFO L93 Difference]: Finished difference Result 147 states and 187 transitions. [2020-08-22 16:57:25,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:57:25,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-08-22 16:57:25,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:25,642 INFO L225 Difference]: With dead ends: 147 [2020-08-22 16:57:25,642 INFO L226 Difference]: Without dead ends: 89 [2020-08-22 16:57:25,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:57:25,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-08-22 16:57:25,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-08-22 16:57:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 16:57:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-08-22 16:57:25,651 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 35 [2020-08-22 16:57:25,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:25,651 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-08-22 16:57:25,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:57:25,652 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-08-22 16:57:25,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 16:57:25,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:25,653 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:57:25,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 16:57:25,653 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:25,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:25,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1310821647, now seen corresponding path program 1 times [2020-08-22 16:57:25,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:25,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082547147] [2020-08-22 16:57:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:25,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:25,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 16:57:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:25,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 16:57:25,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082547147] [2020-08-22 16:57:25,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:57:25,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 16:57:25,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013915134] [2020-08-22 16:57:25,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:57:25,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:25,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:57:25,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:57:25,816 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 8 states. [2020-08-22 16:57:26,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:26,123 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2020-08-22 16:57:26,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 16:57:26,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-08-22 16:57:26,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:26,125 INFO L225 Difference]: With dead ends: 107 [2020-08-22 16:57:26,125 INFO L226 Difference]: Without dead ends: 105 [2020-08-22 16:57:26,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:57:26,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-22 16:57:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-08-22 16:57:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-22 16:57:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-08-22 16:57:26,134 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 38 [2020-08-22 16:57:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:26,135 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-08-22 16:57:26,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:57:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-08-22 16:57:26,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 16:57:26,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:26,138 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:57:26,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 16:57:26,138 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:26,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:26,139 INFO L82 PathProgramCache]: Analyzing trace with hash 888728936, now seen corresponding path program 1 times [2020-08-22 16:57:26,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:26,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680414018] [2020-08-22 16:57:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:26,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:26,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 16:57:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:26,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680414018] [2020-08-22 16:57:26,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021111216] [2020-08-22 16:57:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:26,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2020-08-22 16:57:26,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:26,410 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:57:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:26,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:26,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-08-22 16:57:26,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274829206] [2020-08-22 16:57:26,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:57:26,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:26,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:57:26,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:57:26,423 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand 8 states. [2020-08-22 16:57:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:26,626 INFO L93 Difference]: Finished difference Result 209 states and 263 transitions. [2020-08-22 16:57:26,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:57:26,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-22 16:57:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:26,630 INFO L225 Difference]: With dead ends: 209 [2020-08-22 16:57:26,630 INFO L226 Difference]: Without dead ends: 136 [2020-08-22 16:57:26,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:57:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-22 16:57:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 106. [2020-08-22 16:57:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-08-22 16:57:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2020-08-22 16:57:26,654 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 40 [2020-08-22 16:57:26,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:26,654 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2020-08-22 16:57:26,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:57:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2020-08-22 16:57:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 16:57:26,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:26,659 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-22 16:57:26,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-08-22 16:57:26,861 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:26,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1526927005, now seen corresponding path program 2 times [2020-08-22 16:57:26,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:26,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125354254] [2020-08-22 16:57:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:27,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:57:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:27,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125354254] [2020-08-22 16:57:27,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034050577] [2020-08-22 16:57:27,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:27,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:57:27,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:57:27,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2020-08-22 16:57:27,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:27,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:27,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2020-08-22 16:57:27,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718717455] [2020-08-22 16:57:27,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 16:57:27,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:27,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 16:57:27,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:57:27,281 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand 19 states. [2020-08-22 16:57:27,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:27,874 INFO L93 Difference]: Finished difference Result 240 states and 302 transitions. [2020-08-22 16:57:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 16:57:27,874 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-08-22 16:57:27,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:27,876 INFO L225 Difference]: With dead ends: 240 [2020-08-22 16:57:27,877 INFO L226 Difference]: Without dead ends: 189 [2020-08-22 16:57:27,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-08-22 16:57:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-22 16:57:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 127. [2020-08-22 16:57:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-22 16:57:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2020-08-22 16:57:27,893 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 45 [2020-08-22 16:57:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:27,895 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2020-08-22 16:57:27,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 16:57:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2020-08-22 16:57:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 16:57:27,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:27,902 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-22 16:57:28,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-08-22 16:57:28,107 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:28,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:28,108 INFO L82 PathProgramCache]: Analyzing trace with hash 709278555, now seen corresponding path program 1 times [2020-08-22 16:57:28,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:28,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645729456] [2020-08-22 16:57:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:28,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:57:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 16:57:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:28,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645729456] [2020-08-22 16:57:28,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140323838] [2020-08-22 16:57:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:57:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:57:28,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2020-08-22 16:57:28,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:57:28,530 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:57:28,534 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:57:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:57:28,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:57:28,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2020-08-22 16:57:28,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768782750] [2020-08-22 16:57:28,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 16:57:28,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:57:28,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 16:57:28,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:57:28,600 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand 19 states. [2020-08-22 16:57:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:57:29,133 INFO L93 Difference]: Finished difference Result 212 states and 267 transitions. [2020-08-22 16:57:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 16:57:29,134 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-08-22 16:57:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:57:29,136 INFO L225 Difference]: With dead ends: 212 [2020-08-22 16:57:29,136 INFO L226 Difference]: Without dead ends: 210 [2020-08-22 16:57:29,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2020-08-22 16:57:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-22 16:57:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 146. [2020-08-22 16:57:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 16:57:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 187 transitions. [2020-08-22 16:57:29,151 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 187 transitions. Word has length 45 [2020-08-22 16:57:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:57:29,152 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 187 transitions. [2020-08-22 16:57:29,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 16:57:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 187 transitions. [2020-08-22 16:57:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 16:57:29,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:57:29,154 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-22 16:57:29,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-08-22 16:57:29,369 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:57:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:57:29,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1410343133, now seen corresponding path program 1 times [2020-08-22 16:57:29,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:57:29,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493953636] [2020-08-22 16:57:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:57:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:57:29,386 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:57:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:57:29,398 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:57:29,422 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:57:29,422 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:57:29,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 16:57:29,452 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 16:57:29,454 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 16:57:29,455 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 16:57:29,456 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 16:57:29,457 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 16:57:29,457 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 16:57:29,458 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 16:57:29,458 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 16:57:29,459 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 16:57:29,459 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 16:57:29,460 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 16:57:29,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:57:29 BoogieIcfgContainer [2020-08-22 16:57:29,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:57:29,473 INFO L168 Benchmark]: Toolchain (without parser) took 7312.57 ms. Allocated memory was 140.0 MB in the beginning and 279.4 MB in the end (delta: 139.5 MB). Free memory was 101.4 MB in the beginning and 125.3 MB in the end (delta: -23.9 MB). Peak memory consumption was 115.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:29,474 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 16:57:29,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.78 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 180.3 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:29,475 INFO L168 Benchmark]: Boogie Preprocessor took 58.09 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 177.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:29,476 INFO L168 Benchmark]: RCFGBuilder took 486.49 ms. Allocated memory is still 202.9 MB. Free memory was 177.5 MB in the beginning and 149.7 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:29,477 INFO L168 Benchmark]: TraceAbstraction took 6360.67 ms. Allocated memory was 202.9 MB in the beginning and 279.4 MB in the end (delta: 76.5 MB). Free memory was 149.7 MB in the beginning and 125.3 MB in the end (delta: 24.4 MB). Peak memory consumption was 100.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:57:29,480 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 402.78 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 180.3 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.09 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 177.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.49 ms. Allocated memory is still 202.9 MB. Free memory was 177.5 MB in the beginning and 149.7 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6360.67 ms. Allocated memory was 202.9 MB in the beginning and 279.4 MB in the end (delta: 76.5 MB). Free memory was 149.7 MB in the beginning and 125.3 MB in the end (delta: 24.4 MB). Peak memory consumption was 100.9 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 * 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]; [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; [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++ [L53] str[i] [L54] case 0: VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-1] [L69] EXPR str[i] VAL [i=0, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=-1] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=38] [L69] EXPR str[i] VAL [i=1, j=-1, start=0, str={4:0}, str={4:0}, str2={3:0}, str[i]=38] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [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] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] EXPR str[start] [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]=-1, str[start]=-1] [L55] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [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]=-1] [L56] COND FALSE !(str[start] == '"') [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')) [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') [L58] EXPR str[j] [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]=38, str[j]=38] [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]=38, str[j]=38] [L58] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L59] (0 < j) && (str[j] == '"') [L59] EXPR str[j] [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]=38] [L59] COND FALSE !((0 < j) && (str[j] == '"')) [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); [L61] RET r_strncpy(str2, str+start, j-start+1) VAL [i=2, j=1, r_strncpy(str2, str+start, j-start+1)={35:37}, 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, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.2s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 531 SDtfs, 962 SDslu, 1509 SDs, 0 SdLazy, 2128 SolverSat, 254 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 219 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 574 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 68435 SizeOfPredicates, 8 NumberOfNonLiveVariables, 482 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 2/42 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...