/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/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:24:25,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:24:25,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:24:25,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:24:25,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:24:25,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:24:25,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:24:25,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:24:25,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:24:25,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:24:25,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:24:25,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:24:25,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:24:25,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:24:25,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:24:25,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:24:25,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:24:25,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:24:25,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:24:25,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:24:25,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:24:25,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:24:25,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:24:25,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:24:25,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:24:25,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:24:25,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:24:25,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:24:25,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:24:25,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:24:25,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:24:25,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:24:25,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:24:25,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:24:25,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:24:25,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:24:25,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:24:25,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:24:25,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:24:25,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:24:25,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:24:25,428 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 17:24:25,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:24:25,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:24:25,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:24:25,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:24:25,472 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:24:25,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:24:25,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:24:25,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:24:25,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:24:25,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:24:25,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:24:25,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:24:25,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:24:25,474 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:24:25,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:24:25,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:24:25,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:24:25,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:24:25,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:24:25,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:24:25,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:24:25,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:24:25,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:24:25,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:24:25,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:24:25,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:24:25,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:24:25,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:24:25,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:24:25,478 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 17:24:25,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:24:25,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:24:25,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:24:25,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:24:25,949 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:24:25,950 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 17:24:26,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2b93c10c/e292b9b41dc844339befbe61aac8c5b7/FLAG689a25d19 [2020-09-24 17:24:26,715 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:24:26,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 17:24:26,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2b93c10c/e292b9b41dc844339befbe61aac8c5b7/FLAG689a25d19 [2020-09-24 17:24:26,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2b93c10c/e292b9b41dc844339befbe61aac8c5b7 [2020-09-24 17:24:26,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:24:26,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:24:26,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:24:26,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:24:26,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:24:26,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:24:26" (1/1) ... [2020-09-24 17:24:26,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae19699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:26, skipping insertion in model container [2020-09-24 17:24:26,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:24:26" (1/1) ... [2020-09-24 17:24:26,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:24:27,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:24:28,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:24:28,186 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:24:28,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:24:28,635 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:24:28,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:28 WrapperNode [2020-09-24 17:24:28,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:24:28,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:24:28,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:24:28,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:24:28,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:28" (1/1) ... [2020-09-24 17:24:28,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:28" (1/1) ... [2020-09-24 17:24:28,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:28" (1/1) ... [2020-09-24 17:24:28,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:28" (1/1) ... [2020-09-24 17:24:28,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:28" (1/1) ... [2020-09-24 17:24:28,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:28" (1/1) ... [2020-09-24 17:24:28,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:28" (1/1) ... [2020-09-24 17:24:28,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:24:28,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:24:28,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:24:28,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:24:28,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:28" (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 17:24:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:24:28,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:24:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:24:28,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:24:28,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:24:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 17:24:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 17:24:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 17:24:28,927 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-24 17:24:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:24:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:24:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-24 17:24:28,928 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-24 17:24:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-24 17:24:28,929 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-24 17:24:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-24 17:24:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-24 17:24:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-24 17:24:28,930 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 17:24:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:24:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:24:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:24:32,070 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:24:32,070 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:24:32,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:24:32 BoogieIcfgContainer [2020-09-24 17:24:32,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:24:32,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:24:32,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:24:32,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:24:32,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:24:26" (1/3) ... [2020-09-24 17:24:32,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7c6b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:24:32, skipping insertion in model container [2020-09-24 17:24:32,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:24:28" (2/3) ... [2020-09-24 17:24:32,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7c6b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:24:32, skipping insertion in model container [2020-09-24 17:24:32,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:24:32" (3/3) ... [2020-09-24 17:24:32,107 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-09-24 17:24:32,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:24:32,141 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:24:32,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:24:32,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:24:32,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:24:32,213 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:24:32,213 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:24:32,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:24:32,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:24:32,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:24:32,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:24:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states. [2020-09-24 17:24:32,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2020-09-24 17:24:32,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:24:32,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:24:32,347 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:24:32,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:24:32,356 INFO L82 PathProgramCache]: Analyzing trace with hash -2948384, now seen corresponding path program 1 times [2020-09-24 17:24:32,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:24:32,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659036754] [2020-09-24 17:24:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:24:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:24:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:35,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:36,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:36,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:42,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:44,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:44,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:24:45,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking...