/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:07:34,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:07:34,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:07:34,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:07:34,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:07:34,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:07:34,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:07:34,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:07:34,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:07:34,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:07:34,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:07:34,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:07:34,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:07:34,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:07:34,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:07:34,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:07:34,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:07:34,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:07:34,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:07:34,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:07:34,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:07:34,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:07:34,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:07:34,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:07:34,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:07:34,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:07:34,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:07:34,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:07:34,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:07:34,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:07:34,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:07:34,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:07:34,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:07:34,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:07:34,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:07:34,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:07:34,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:07:34,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:07:34,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:07:34,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:07:34,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:07:34,587 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 [2020-09-24 17:07:34,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:07:34,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:07:34,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:07:34,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:07:34,633 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:07:34,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:07:34,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:07:34,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:07:34,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:07:34,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:07:34,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:07:34,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:07:34,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:07:34,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:07:34,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:07:34,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:07:34,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:07:34,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:07:34,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:07:34,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:07:34,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:07:34,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:07:34,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:07:34,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:07:34,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:07:34,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:07:34,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:07:34,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:07:34,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:07:34,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:07:35,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:07:35,117 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:07:35,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:07:35,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:07:35,124 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:07:35,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-24 17:07:35,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6cb5c17d/e1cfa3f31eab4c7cbd4c711ef244d7a0/FLAGd1bf5ed61 [2020-09-24 17:07:35,716 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:07:35,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c [2020-09-24 17:07:35,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6cb5c17d/e1cfa3f31eab4c7cbd4c711ef244d7a0/FLAGd1bf5ed61 [2020-09-24 17:07:36,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6cb5c17d/e1cfa3f31eab4c7cbd4c711ef244d7a0 [2020-09-24 17:07:36,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:07:36,070 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:07:36,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:07:36,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:07:36,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:07:36,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:07:36" (1/1) ... [2020-09-24 17:07:36,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:36, skipping insertion in model container [2020-09-24 17:07:36,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:07:36" (1/1) ... [2020-09-24 17:07:36,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:07:36,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:07:36,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:07:36,350 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:07:36,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:07:36,390 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:07:36,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:36 WrapperNode [2020-09-24 17:07:36,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:07:36,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:07:36,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:07:36,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:07:36,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:36" (1/1) ... [2020-09-24 17:07:36,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:36" (1/1) ... [2020-09-24 17:07:36,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:36" (1/1) ... [2020-09-24 17:07:36,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:36" (1/1) ... [2020-09-24 17:07:36,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:36" (1/1) ... [2020-09-24 17:07:36,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:36" (1/1) ... [2020-09-24 17:07:36,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:36" (1/1) ... [2020-09-24 17:07:36,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:07:36,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:07:36,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:07:36,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:07:36,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:36" (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 [2020-09-24 17:07:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:07:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:07:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-24 17:07:36,597 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-24 17:07:36,597 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-24 17:07:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2020-09-24 17:07:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2020-09-24 17:07:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2020-09-24 17:07:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2020-09-24 17:07:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2020-09-24 17:07:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2020-09-24 17:07:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:07:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:07:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-24 17:07:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:07:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-24 17:07:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-24 17:07:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2020-09-24 17:07:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2020-09-24 17:07:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2020-09-24 17:07:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2020-09-24 17:07:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2020-09-24 17:07:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2020-09-24 17:07:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:07:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:07:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:07:36,989 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:07:36,990 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:07:36,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:07:36 BoogieIcfgContainer [2020-09-24 17:07:36,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:07:36,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:07:36,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:07:37,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:07:37,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:07:36" (1/3) ... [2020-09-24 17:07:37,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46be317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:07:37, skipping insertion in model container [2020-09-24 17:07:37,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:36" (2/3) ... [2020-09-24 17:07:37,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46be317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:07:37, skipping insertion in model container [2020-09-24 17:07:37,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:07:36" (3/3) ... [2020-09-24 17:07:37,005 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2020-09-24 17:07:37,016 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:07:37,027 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:07:37,044 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:07:37,075 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:07:37,075 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:07:37,075 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:07:37,075 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:07:37,075 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:07:37,075 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:07:37,076 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:07:37,076 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:07:37,099 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2020-09-24 17:07:37,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 17:07:37,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:37,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:37,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:37,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:37,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times [2020-09-24 17:07:37,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:37,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566625636] [2020-09-24 17:07:37,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:37,400 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:37,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 17:07:37,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 17:07:37,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:37,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:37,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 17:07:37,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 17:07:37,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:07:37,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:37,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:37,492 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:37,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:37,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:07:37,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:37,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 17:07:37,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:37,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:07:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:37,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:37,525 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:37,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:37,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:37,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:37,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:07:37,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:37,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566625636] [2020-09-24 17:07:37,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:37,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:07:37,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220911941] [2020-09-24 17:07:37,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:07:37,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:37,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:07:37,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:07:37,568 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 5 states. [2020-09-24 17:07:37,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:37,921 INFO L93 Difference]: Finished difference Result 265 states and 334 transitions. [2020-09-24 17:07:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:07:37,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-24 17:07:37,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:37,942 INFO L225 Difference]: With dead ends: 265 [2020-09-24 17:07:37,942 INFO L226 Difference]: Without dead ends: 164 [2020-09-24 17:07:37,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:07:37,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-24 17:07:38,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-09-24 17:07:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-24 17:07:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2020-09-24 17:07:38,038 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 19 [2020-09-24 17:07:38,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:38,039 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2020-09-24 17:07:38,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:07:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2020-09-24 17:07:38,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 17:07:38,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:38,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:38,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:07:38,043 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:38,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times [2020-09-24 17:07:38,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:38,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721202641] [2020-09-24 17:07:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:38,722 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:38,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 17:07:38,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:07:38,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-09-24 17:07:38,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 17:07:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:07:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 17:07:38,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:38,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:38,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:38,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:38,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:38,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:07:38,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:38,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:07:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:38,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:38,793 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:38,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:38,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:38,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:07:38,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:38,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:38,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:38,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:38,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 17:07:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:38,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:38,811 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:38,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:38,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:38,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:07:38,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:38,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 17:07:38,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:38,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721202641] [2020-09-24 17:07:38,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:38,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:07:38,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152096158] [2020-09-24 17:07:38,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:07:38,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:38,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:07:38,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:07:38,833 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states. [2020-09-24 17:07:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:39,036 INFO L93 Difference]: Finished difference Result 279 states and 339 transitions. [2020-09-24 17:07:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:07:39,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-24 17:07:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:39,039 INFO L225 Difference]: With dead ends: 279 [2020-09-24 17:07:39,040 INFO L226 Difference]: Without dead ends: 133 [2020-09-24 17:07:39,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:07:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-24 17:07:39,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 92. [2020-09-24 17:07:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 17:07:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2020-09-24 17:07:39,056 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 38 [2020-09-24 17:07:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:39,057 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2020-09-24 17:07:39,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:07:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2020-09-24 17:07:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 17:07:39,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:39,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:39,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:07:39,059 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:39,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:39,060 INFO L82 PathProgramCache]: Analyzing trace with hash -624757564, now seen corresponding path program 1 times [2020-09-24 17:07:39,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:39,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687019890] [2020-09-24 17:07:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:39,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:39,116 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:39,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 17:07:39,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:39,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 17:07:39,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:39,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 17:07:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 17:07:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:39,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:39,150 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:39,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:39,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:07:39,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:39,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:07:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:39,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:39,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:39,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:39,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:39,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:07:39,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:39,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:07:39,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:39,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 17:07:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:39,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:39,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:39,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:07:39,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:07:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:39,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687019890] [2020-09-24 17:07:39,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:39,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:07:39,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199679851] [2020-09-24 17:07:39,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:07:39,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:39,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:07:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:07:39,199 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand 6 states. [2020-09-24 17:07:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:39,449 INFO L93 Difference]: Finished difference Result 251 states and 305 transitions. [2020-09-24 17:07:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:07:39,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-24 17:07:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:39,452 INFO L225 Difference]: With dead ends: 251 [2020-09-24 17:07:39,452 INFO L226 Difference]: Without dead ends: 173 [2020-09-24 17:07:39,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:07:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-24 17:07:39,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 112. [2020-09-24 17:07:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-24 17:07:39,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 129 transitions. [2020-09-24 17:07:39,467 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 129 transitions. Word has length 38 [2020-09-24 17:07:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:39,468 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 129 transitions. [2020-09-24 17:07:39,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:07:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2020-09-24 17:07:39,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 17:07:39,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:39,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:39,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:07:39,471 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:39,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:39,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2144371133, now seen corresponding path program 1 times [2020-09-24 17:07:39,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:39,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371776402] [2020-09-24 17:07:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:39,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:39,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:39,703 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:39,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 17:07:39,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-24 17:07:39,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 17:07:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 17:07:39,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:39,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:39,759 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:39,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:39,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:39,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:07:39,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:39,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:07:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:39,776 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:39,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:39,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:39,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:07:39,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:39,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 17:07:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:39,788 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:39,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:07:39,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:07:39,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:39,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:07:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:39,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 17:07:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:39,806 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:39,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:39,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:07:39,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:07:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:39,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:39,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371776402] [2020-09-24 17:07:39,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:39,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:07:39,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069704436] [2020-09-24 17:07:39,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:07:39,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:39,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:07:39,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:07:39,815 INFO L87 Difference]: Start difference. First operand 112 states and 129 transitions. Second operand 8 states. [2020-09-24 17:07:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:40,176 INFO L93 Difference]: Finished difference Result 311 states and 383 transitions. [2020-09-24 17:07:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 17:07:40,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-24 17:07:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:40,178 INFO L225 Difference]: With dead ends: 311 [2020-09-24 17:07:40,179 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 17:07:40,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:07:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 17:07:40,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 132. [2020-09-24 17:07:40,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-24 17:07:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-09-24 17:07:40,212 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 59 [2020-09-24 17:07:40,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:40,212 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-09-24 17:07:40,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:07:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-09-24 17:07:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 17:07:40,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:40,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:40,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:07:40,220 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:40,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:40,224 INFO L82 PathProgramCache]: Analyzing trace with hash -204784227, now seen corresponding path program 1 times [2020-09-24 17:07:40,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:40,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750916359] [2020-09-24 17:07:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:40,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:40,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,091 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 17:07:41,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:07:41,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-09-24 17:07:41,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:41,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 17:07:41,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 17:07:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:41,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,155 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:41,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:07:41,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:41,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:41,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 17:07:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,169 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:41,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:07:41,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:41,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 17:07:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,178 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:07:41,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:07:41,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:41,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 17:07:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,186 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 17:07:41,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:07:41,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 17:07:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:41,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-24 17:07:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,202 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:41,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:07:41,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:41,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 17:07:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 17:07:41,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750916359] [2020-09-24 17:07:41,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:41,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:07:41,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364659831] [2020-09-24 17:07:41,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:07:41,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:41,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:07:41,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:07:41,213 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 8 states. [2020-09-24 17:07:41,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:41,576 INFO L93 Difference]: Finished difference Result 411 states and 519 transitions. [2020-09-24 17:07:41,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 17:07:41,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-09-24 17:07:41,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:41,579 INFO L225 Difference]: With dead ends: 411 [2020-09-24 17:07:41,580 INFO L226 Difference]: Without dead ends: 293 [2020-09-24 17:07:41,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:07:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-24 17:07:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 152. [2020-09-24 17:07:41,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-24 17:07:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2020-09-24 17:07:41,593 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 183 transitions. Word has length 79 [2020-09-24 17:07:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:41,594 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 183 transitions. [2020-09-24 17:07:41,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:07:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 183 transitions. [2020-09-24 17:07:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 17:07:41,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:41,596 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:41,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:07:41,597 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:41,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:41,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times [2020-09-24 17:07:41,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:41,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635831269] [2020-09-24 17:07:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:07:41,621 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:07:41,621 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:07:41,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:07:41,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:07:41 BoogieIcfgContainer [2020-09-24 17:07:41,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:07:41,660 INFO L168 Benchmark]: Toolchain (without parser) took 5593.25 ms. Allocated memory was 140.5 MB in the beginning and 280.0 MB in the end (delta: 139.5 MB). Free memory was 102.4 MB in the beginning and 204.1 MB in the end (delta: -101.7 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:41,662 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-24 17:07:41,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.34 ms. Allocated memory is still 140.5 MB. Free memory was 101.8 MB in the beginning and 91.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:41,669 INFO L168 Benchmark]: Boogie Preprocessor took 118.40 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 91.4 MB in the beginning and 181.5 MB in the end (delta: -90.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:41,670 INFO L168 Benchmark]: RCFGBuilder took 485.69 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 160.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:41,671 INFO L168 Benchmark]: TraceAbstraction took 4659.23 ms. Allocated memory was 203.4 MB in the beginning and 280.0 MB in the end (delta: 76.5 MB). Free memory was 159.4 MB in the beginning and 204.1 MB in the end (delta: -44.7 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:41,684 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.34 ms. Allocated memory is still 140.5 MB. Free memory was 101.8 MB in the beginning and 91.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.40 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 91.4 MB in the beginning and 181.5 MB in the end (delta: -90.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.69 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 160.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4659.23 ms. Allocated memory was 203.4 MB in the beginning and 280.0 MB in the end (delta: 76.5 MB). Free memory was 159.4 MB in the beginning and 204.1 MB in the end (delta: -44.7 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * 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: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; [L75] CALL my_init() [L69] open_called = 0 [L70] return 0; [L75] RET my_init() [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L82] CALL misc_open() [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L82] RET misc_open() [L83] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L90] CALL misc_read() [L52] return 0; [L90] RET misc_read() [L91] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L98] CALL misc_llseek() [L48] return 0; [L98] RET misc_llseek() [L99] ldv_s_misc_fops_file_operations++ [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L106] CALL misc_release() [L34] COND FALSE !(\read(open_called)) [L41] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L17] ldv_mutex = 2 [L41] RET mutex_lock() [L42] CALL mutex_lock() [L16] (ldv_mutex == 1) ? 0 : __blast_assert() [L16] CALL __blast_assert() [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 466 SDtfs, 807 SDslu, 1162 SDs, 0 SdLazy, 757 SolverSat, 221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=1, 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, 5 MinimizatonAttempts, 328 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 334 NumberOfCodeBlocks, 334 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 22614 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 31/31 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...