/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 0.1.25-3af5e1f [2020-09-04 13:43:29,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:43:29,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:43:29,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:43:29,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:43:29,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:43:29,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:43:29,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:43:29,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:43:29,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:43:29,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:43:29,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:43:29,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:43:29,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:43:29,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:43:29,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:43:29,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:43:29,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:43:29,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:43:29,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:43:29,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:43:29,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:43:29,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:43:29,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:43:29,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:43:29,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:43:29,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:43:29,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:43:29,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:43:29,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:43:29,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:43:29,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:43:29,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:43:29,520 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:43:29,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:43:29,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:43:29,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:43:29,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:43:29,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:43:29,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:43:29,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:43:29,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:43:29,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:43:29,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:43:29,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:43:29,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:43:29,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:43:29,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:43:29,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:43:29,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:43:29,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:43:29,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:43:29,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:43:29,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:43:29,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:43:29,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:43:29,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:43:29,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:43:29,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:43:30,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:43:30,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:43:30,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:43:30,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:43:30,043 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:43:30,045 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-04 13:43:30,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e8b51623/d8e66212e254482e83db763e017e908b/FLAGac4726235 [2020-09-04 13:43:30,686 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:43:30,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-04 13:43:30,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e8b51623/d8e66212e254482e83db763e017e908b/FLAGac4726235 [2020-09-04 13:43:31,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e8b51623/d8e66212e254482e83db763e017e908b [2020-09-04 13:43:31,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:43:31,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:43:31,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:31,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:43:31,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:43:31,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31, skipping insertion in model container [2020-09-04 13:43:31,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:43:31,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:43:31,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:31,322 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:43:31,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:31,472 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:43:31,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31 WrapperNode [2020-09-04 13:43:31,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:31,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:43:31,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:43:31,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:43:31,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... [2020-09-04 13:43:31,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:43:31,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:43:31,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:43:31,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:43:31,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:43:31,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:43:31,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:43:31,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:43:31,614 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-04 13:43:31,614 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-04 13:43:31,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:43:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:43:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:43:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-04 13:43:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-04 13:43:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-04 13:43:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-04 13:43:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-04 13:43:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-04 13:43:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-04 13:43:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-04 13:43:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-04 13:43:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-04 13:43:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-04 13:43:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-04 13:43:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-04 13:43:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-04 13:43:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-04 13:43:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-04 13:43:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-04 13:43:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-04 13:43:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-04 13:43:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-04 13:43:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-04 13:43:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-04 13:43:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-04 13:43:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-04 13:43:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-04 13:43:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-04 13:43:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:43:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:43:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:43:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:43:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:43:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:43:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:43:32,100 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:43:32,100 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 13:43:32,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:32 BoogieIcfgContainer [2020-09-04 13:43:32,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:43:32,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:43:32,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:43:32,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:43:32,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:43:31" (1/3) ... [2020-09-04 13:43:32,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6fa22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:32, skipping insertion in model container [2020-09-04 13:43:32,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:31" (2/3) ... [2020-09-04 13:43:32,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6fa22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:32, skipping insertion in model container [2020-09-04 13:43:32,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:32" (3/3) ... [2020-09-04 13:43:32,116 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-09-04 13:43:32,126 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:43:32,135 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:43:32,158 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:43:32,187 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:43:32,188 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:43:32,188 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:43:32,188 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:43:32,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:43:32,188 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:43:32,189 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:43:32,189 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:43:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-04 13:43:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 13:43:32,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:32,224 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] [2020-09-04 13:43:32,224 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:32,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:32,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2018987797, now seen corresponding path program 1 times [2020-09-04 13:43:32,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:32,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337983687] [2020-09-04 13:43:32,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 13:43:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:32,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337983687] [2020-09-04 13:43:32,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:32,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:43:32,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524282925] [2020-09-04 13:43:32,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:43:32,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:32,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:43:32,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:43:32,601 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-09-04 13:43:32,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:32,767 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2020-09-04 13:43:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:43:32,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-09-04 13:43:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:32,780 INFO L225 Difference]: With dead ends: 93 [2020-09-04 13:43:32,781 INFO L226 Difference]: Without dead ends: 43 [2020-09-04 13:43:32,785 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 [2020-09-04 13:43:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-04 13:43:32,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-04 13:43:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-04 13:43:32,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-09-04 13:43:32,834 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2020-09-04 13:43:32,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:32,835 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-09-04 13:43:32,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:43:32,835 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-09-04 13:43:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 13:43:32,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:32,837 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] [2020-09-04 13:43:32,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:43:32,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:32,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:32,838 INFO L82 PathProgramCache]: Analyzing trace with hash -171780126, now seen corresponding path program 1 times [2020-09-04 13:43:32,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:32,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220050983] [2020-09-04 13:43:32,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:43:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:32,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220050983] [2020-09-04 13:43:32,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:32,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:43:32,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868004699] [2020-09-04 13:43:32,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:43:32,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:32,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:43:32,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:43:32,945 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2020-09-04 13:43:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:33,092 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-09-04 13:43:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:43:33,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-04 13:43:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:33,094 INFO L225 Difference]: With dead ends: 78 [2020-09-04 13:43:33,094 INFO L226 Difference]: Without dead ends: 44 [2020-09-04 13:43:33,096 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 [2020-09-04 13:43:33,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-04 13:43:33,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-04 13:43:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-04 13:43:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-09-04 13:43:33,106 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-09-04 13:43:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:33,107 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-09-04 13:43:33,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:43:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-09-04 13:43:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 13:43:33,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:33,109 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] [2020-09-04 13:43:33,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:43:33,109 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:33,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:33,110 INFO L82 PathProgramCache]: Analyzing trace with hash 250921700, now seen corresponding path program 1 times [2020-09-04 13:43:33,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:33,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566796084] [2020-09-04 13:43:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:33,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:33,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:43:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:33,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566796084] [2020-09-04 13:43:33,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:33,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 13:43:33,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504345625] [2020-09-04 13:43:33,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:43:33,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:33,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:43:33,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:43:33,325 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 8 states. [2020-09-04 13:43:33,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:33,686 INFO L93 Difference]: Finished difference Result 140 states and 187 transitions. [2020-09-04 13:43:33,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 13:43:33,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-04 13:43:33,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:33,691 INFO L225 Difference]: With dead ends: 140 [2020-09-04 13:43:33,692 INFO L226 Difference]: Without dead ends: 91 [2020-09-04 13:43:33,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-04 13:43:33,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-04 13:43:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-09-04 13:43:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-04 13:43:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 84 transitions. [2020-09-04 13:43:33,712 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 84 transitions. Word has length 33 [2020-09-04 13:43:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:33,712 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 84 transitions. [2020-09-04 13:43:33,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:43:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 84 transitions. [2020-09-04 13:43:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 13:43:33,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:33,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:33,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:43:33,714 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:33,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1743223006, now seen corresponding path program 1 times [2020-09-04 13:43:33,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:33,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647264391] [2020-09-04 13:43:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:33,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:43:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:33,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647264391] [2020-09-04 13:43:33,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:33,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 13:43:33,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115676076] [2020-09-04 13:43:33,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:43:33,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:33,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:43:33,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:43:33,881 INFO L87 Difference]: Start difference. First operand 66 states and 84 transitions. Second operand 7 states. [2020-09-04 13:43:34,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:34,141 INFO L93 Difference]: Finished difference Result 136 states and 180 transitions. [2020-09-04 13:43:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:43:34,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-04 13:43:34,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:34,143 INFO L225 Difference]: With dead ends: 136 [2020-09-04 13:43:34,144 INFO L226 Difference]: Without dead ends: 92 [2020-09-04 13:43:34,145 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 [2020-09-04 13:43:34,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-04 13:43:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2020-09-04 13:43:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 13:43:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-09-04 13:43:34,158 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 33 [2020-09-04 13:43:34,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:34,159 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-09-04 13:43:34,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:43:34,159 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-09-04 13:43:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 13:43:34,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:34,161 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] [2020-09-04 13:43:34,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 13:43:34,161 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:34,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:34,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1042158428, now seen corresponding path program 1 times [2020-09-04 13:43:34,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:34,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019927272] [2020-09-04 13:43:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 13:43:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:34,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019927272] [2020-09-04 13:43:34,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:34,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:43:34,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526881324] [2020-09-04 13:43:34,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:43:34,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:34,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:43:34,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:43:34,292 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 6 states. [2020-09-04 13:43:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:34,516 INFO L93 Difference]: Finished difference Result 138 states and 179 transitions. [2020-09-04 13:43:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:43:34,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-04 13:43:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:34,519 INFO L225 Difference]: With dead ends: 138 [2020-09-04 13:43:34,519 INFO L226 Difference]: Without dead ends: 89 [2020-09-04 13:43:34,520 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 [2020-09-04 13:43:34,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-04 13:43:34,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-09-04 13:43:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-04 13:43:34,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2020-09-04 13:43:34,530 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 33 [2020-09-04 13:43:34,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:34,530 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2020-09-04 13:43:34,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:43:34,531 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2020-09-04 13:43:34,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 13:43:34,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:34,532 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] [2020-09-04 13:43:34,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 13:43:34,533 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:34,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:34,533 INFO L82 PathProgramCache]: Analyzing trace with hash -151257089, now seen corresponding path program 1 times [2020-09-04 13:43:34,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:34,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501324214] [2020-09-04 13:43:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 13:43:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:34,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501324214] [2020-09-04 13:43:34,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:34,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:43:34,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530871278] [2020-09-04 13:43:34,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:43:34,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:34,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:43:34,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:43:34,600 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand 5 states. [2020-09-04 13:43:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:34,744 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2020-09-04 13:43:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:43:34,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-04 13:43:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:34,747 INFO L225 Difference]: With dead ends: 124 [2020-09-04 13:43:34,747 INFO L226 Difference]: Without dead ends: 89 [2020-09-04 13:43:34,748 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 [2020-09-04 13:43:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-04 13:43:34,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-09-04 13:43:34,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-04 13:43:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-09-04 13:43:34,757 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 35 [2020-09-04 13:43:34,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:34,758 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-09-04 13:43:34,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:43:34,758 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-09-04 13:43:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 13:43:34,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:34,759 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] [2020-09-04 13:43:34,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 13:43:34,760 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:34,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:34,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1172325443, now seen corresponding path program 1 times [2020-09-04 13:43:34,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:34,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146111126] [2020-09-04 13:43:34,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 13:43:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:34,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146111126] [2020-09-04 13:43:34,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:34,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 13:43:34,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650419660] [2020-09-04 13:43:34,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:43:34,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:34,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:43:34,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:43:34,878 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 7 states. [2020-09-04 13:43:35,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:35,054 INFO L93 Difference]: Finished difference Result 147 states and 187 transitions. [2020-09-04 13:43:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:43:35,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-04 13:43:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:35,055 INFO L225 Difference]: With dead ends: 147 [2020-09-04 13:43:35,055 INFO L226 Difference]: Without dead ends: 89 [2020-09-04 13:43:35,056 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 [2020-09-04 13:43:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-04 13:43:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-09-04 13:43:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-04 13:43:35,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-09-04 13:43:35,066 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 35 [2020-09-04 13:43:35,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:35,066 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-09-04 13:43:35,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:43:35,067 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-09-04 13:43:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 13:43:35,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:35,068 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] [2020-09-04 13:43:35,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 13:43:35,069 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:35,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:35,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1310821647, now seen corresponding path program 1 times [2020-09-04 13:43:35,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:35,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237956601] [2020-09-04 13:43:35,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:43:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:43:35,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237956601] [2020-09-04 13:43:35,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:35,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 13:43:35,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960634018] [2020-09-04 13:43:35,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:43:35,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:35,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:43:35,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:43:35,199 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 8 states. [2020-09-04 13:43:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:35,454 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2020-09-04 13:43:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 13:43:35,455 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-04 13:43:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:35,456 INFO L225 Difference]: With dead ends: 107 [2020-09-04 13:43:35,457 INFO L226 Difference]: Without dead ends: 105 [2020-09-04 13:43:35,458 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 [2020-09-04 13:43:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-04 13:43:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-09-04 13:43:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-04 13:43:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-09-04 13:43:35,468 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 38 [2020-09-04 13:43:35,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:35,468 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-09-04 13:43:35,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:43:35,469 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-09-04 13:43:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 13:43:35,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:35,472 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] [2020-09-04 13:43:35,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 13:43:35,472 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:35,472 INFO L82 PathProgramCache]: Analyzing trace with hash 888728936, now seen corresponding path program 1 times [2020-09-04 13:43:35,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:35,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917257600] [2020-09-04 13:43:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-04 13:43:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:35,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917257600] [2020-09-04 13:43:35,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523007910] [2020-09-04 13:43:35,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:43:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-04 13:43:35,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:35,752 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:43:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:35,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:43:35,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-09-04 13:43:35,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402516295] [2020-09-04 13:43:35,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:43:35,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:35,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:43:35,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:43:35,770 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand 8 states. [2020-09-04 13:43:36,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:36,024 INFO L93 Difference]: Finished difference Result 209 states and 263 transitions. [2020-09-04 13:43:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:43:36,025 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-09-04 13:43:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:36,028 INFO L225 Difference]: With dead ends: 209 [2020-09-04 13:43:36,028 INFO L226 Difference]: Without dead ends: 136 [2020-09-04 13:43:36,029 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 [2020-09-04 13:43:36,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-04 13:43:36,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 106. [2020-09-04 13:43:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-04 13:43:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2020-09-04 13:43:36,040 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 40 [2020-09-04 13:43:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:36,040 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2020-09-04 13:43:36,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:43:36,040 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2020-09-04 13:43:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 13:43:36,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:36,042 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] [2020-09-04 13:43:36,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-09-04 13:43:36,259 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:36,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:36,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1526927005, now seen corresponding path program 2 times [2020-09-04 13:43:36,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:36,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651240961] [2020-09-04 13:43:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:36,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 13:43:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:36,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651240961] [2020-09-04 13:43:36,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404414577] [2020-09-04 13:43:36,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:43:36,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:43:36,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:43:36,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-04 13:43:36,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:36,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:43:36,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2020-09-04 13:43:36,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039200654] [2020-09-04 13:43:36,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 13:43:36,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:36,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 13:43:36,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-09-04 13:43:36,727 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand 19 states. [2020-09-04 13:43:37,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:37,444 INFO L93 Difference]: Finished difference Result 240 states and 302 transitions. [2020-09-04 13:43:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 13:43:37,445 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-09-04 13:43:37,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:37,448 INFO L225 Difference]: With dead ends: 240 [2020-09-04 13:43:37,448 INFO L226 Difference]: Without dead ends: 189 [2020-09-04 13:43:37,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2020-09-04 13:43:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-04 13:43:37,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 127. [2020-09-04 13:43:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-04 13:43:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2020-09-04 13:43:37,475 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 45 [2020-09-04 13:43:37,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:37,475 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2020-09-04 13:43:37,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 13:43:37,480 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2020-09-04 13:43:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 13:43:37,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:37,484 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] [2020-09-04 13:43:37,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-09-04 13:43:37,699 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:37,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:37,700 INFO L82 PathProgramCache]: Analyzing trace with hash 709278555, now seen corresponding path program 1 times [2020-09-04 13:43:37,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:37,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91779762] [2020-09-04 13:43:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:37,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:37,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 13:43:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:37,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91779762] [2020-09-04 13:43:37,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555057776] [2020-09-04 13:43:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:43:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:37,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-04 13:43:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:38,171 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:43:38,174 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:43:38,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:38,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:43:38,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2020-09-04 13:43:38,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499264952] [2020-09-04 13:43:38,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 13:43:38,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:38,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 13:43:38,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-04 13:43:38,249 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand 19 states. [2020-09-04 13:43:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:38,949 INFO L93 Difference]: Finished difference Result 212 states and 267 transitions. [2020-09-04 13:43:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 13:43:38,949 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-09-04 13:43:38,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:38,951 INFO L225 Difference]: With dead ends: 212 [2020-09-04 13:43:38,952 INFO L226 Difference]: Without dead ends: 210 [2020-09-04 13:43:38,953 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 [2020-09-04 13:43:38,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-04 13:43:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 146. [2020-09-04 13:43:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-04 13:43:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 187 transitions. [2020-09-04 13:43:38,964 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 187 transitions. Word has length 45 [2020-09-04 13:43:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:38,964 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 187 transitions. [2020-09-04 13:43:38,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 13:43:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 187 transitions. [2020-09-04 13:43:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 13:43:38,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:38,966 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] [2020-09-04 13:43:39,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-09-04 13:43:39,181 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:39,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1410343133, now seen corresponding path program 1 times [2020-09-04 13:43:39,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:39,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896281060] [2020-09-04 13:43:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:43:39,203 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:43:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:43:39,223 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:43:39,252 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:43:39,253 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:43:39,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 13:43:39,288 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-09-04 13:43:39,291 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-09-04 13:43:39,292 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-09-04 13:43:39,292 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-09-04 13:43:39,293 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-09-04 13:43:39,293 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-09-04 13:43:39,294 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-09-04 13:43:39,295 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-09-04 13:43:39,295 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-09-04 13:43:39,296 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-09-04 13:43:39,296 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-09-04 13:43:39,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:43:39 BoogieIcfgContainer [2020-09-04 13:43:39,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:43:39,312 INFO L168 Benchmark]: Toolchain (without parser) took 8279.69 ms. Allocated memory was 138.9 MB in the beginning and 286.3 MB in the end (delta: 147.3 MB). Free memory was 100.8 MB in the beginning and 165.6 MB in the end (delta: -64.8 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:39,313 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:43:39,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.26 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.6 MB in the beginning and 178.5 MB in the end (delta: -77.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:39,315 INFO L168 Benchmark]: Boogie Preprocessor took 57.68 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 175.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:39,315 INFO L168 Benchmark]: RCFGBuilder took 573.99 ms. Allocated memory is still 201.3 MB. Free memory was 175.9 MB in the beginning and 148.0 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:39,316 INFO L168 Benchmark]: TraceAbstraction took 7201.51 ms. Allocated memory was 201.3 MB in the beginning and 286.3 MB in the end (delta: 84.9 MB). Free memory was 147.3 MB in the beginning and 165.6 MB in the end (delta: -18.3 MB). Peak memory consumption was 66.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:39,320 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 441.26 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.6 MB in the beginning and 178.5 MB in the end (delta: -77.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.68 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 175.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 573.99 ms. Allocated memory is still 201.3 MB. Free memory was 175.9 MB in the beginning and 148.0 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7201.51 ms. Allocated memory was 201.3 MB in the beginning and 286.3 MB in the end (delta: 84.9 MB). Free memory was 147.3 MB in the beginning and 165.6 MB in the end (delta: -18.3 MB). Peak memory consumption was 66.6 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: 7.0s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 3.4s, 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, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.4s 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, 0.3s SatisfiabilityAnalysisTime, 1.7s 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...