/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 SequenceOfStatements --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:08:00,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:08:00,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:08:00,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:08:00,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:08:00,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:08:00,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:08:00,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:08:00,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:08:00,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:08:00,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:08:00,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:08:00,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:08:00,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:08:00,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:08:00,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:08:00,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:08:00,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:08:00,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:08:00,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:08:00,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:08:00,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:08:00,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:08:00,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:08:00,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:08:00,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:08:00,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:08:00,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:08:00,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:08:00,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:08:00,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:08:00,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:08:00,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:08:00,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:08:00,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:08:00,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:08:00,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:08:00,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:08:00,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:08:00,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:08:00,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:08:00,102 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 [2020-10-14 18:08:00,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:08:00,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:08:00,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:08:00,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:08:00,128 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:08:00,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:08:00,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:08:00,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:08:00,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:08:00,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:08:00,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:08:00,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:08:00,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:08:00,130 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:08:00,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:08:00,130 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:08:00,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:08:00,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:08:00,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:08:00,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:08:00,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:08:00,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:08:00,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:08:00,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:08:00,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:08:00,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:08:00,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:08:00,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:08:00,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:08:00,133 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 -> SequenceOfStatements 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;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:08:00,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:08:00,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:08:00,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:08:00,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:08:00,530 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:08:00,531 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-10-14 18:08:00,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ce9bd96a/28a2c7538b2e4c02bd0a174deb45ba3d/FLAG2ab9bcb8c [2020-10-14 18:08:01,014 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:08:01,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-10-14 18:08:01,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ce9bd96a/28a2c7538b2e4c02bd0a174deb45ba3d/FLAG2ab9bcb8c [2020-10-14 18:08:01,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ce9bd96a/28a2c7538b2e4c02bd0a174deb45ba3d [2020-10-14 18:08:01,458 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:08:01,459 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:08:01,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:08:01,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:08:01,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:08:01,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:08:01" (1/1) ... [2020-10-14 18:08:01,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db9ac37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:01, skipping insertion in model container [2020-10-14 18:08:01,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:08:01" (1/1) ... [2020-10-14 18:08:01,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:08:01,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:08:01,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:08:01,769 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:08:01,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:08:01,824 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:08:01,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:01 WrapperNode [2020-10-14 18:08:01,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:08:01,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:08:01,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:08:01,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:08:01,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:01" (1/1) ... [2020-10-14 18:08:01,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:01" (1/1) ... [2020-10-14 18:08:01,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:01" (1/1) ... [2020-10-14 18:08:01,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:01" (1/1) ... [2020-10-14 18:08:01,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:01" (1/1) ... [2020-10-14 18:08:01,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:01" (1/1) ... [2020-10-14 18:08:01,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:01" (1/1) ... [2020-10-14 18:08:01,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:08:01,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:08:01,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:08:01,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:08:01,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:01" (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 [2020-10-14 18:08:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:08:02,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:08:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:08:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:08:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:08:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:08:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:08:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:08:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:08:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:08:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 18:08:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:08:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:08:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 18:08:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:08:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:08:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:08:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:08:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:08:02,333 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:08:02,333 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 18:08:02,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:08:02 BoogieIcfgContainer [2020-10-14 18:08:02,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:08:02,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:08:02,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:08:02,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:08:02,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:08:01" (1/3) ... [2020-10-14 18:08:02,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ceaebe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:08:02, skipping insertion in model container [2020-10-14 18:08:02,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:01" (2/3) ... [2020-10-14 18:08:02,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ceaebe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:08:02, skipping insertion in model container [2020-10-14 18:08:02,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:08:02" (3/3) ... [2020-10-14 18:08:02,346 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-10-14 18:08:02,357 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:08:02,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:08:02,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:08:02,409 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:08:02,409 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:08:02,409 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:08:02,409 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:08:02,410 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:08:02,410 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:08:02,410 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:08:02,410 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:08:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 18:08:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 18:08:02,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:02,438 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] [2020-10-14 18:08:02,438 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:02,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:02,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-10-14 18:08:02,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:02,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296600134] [2020-10-14 18:08:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:02,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:02,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 18:08:02,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-14 18:08:02,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:02,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:08:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:08:02,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:08:02,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 18:08:03,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:03,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:03,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:03,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:03,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:03,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:08:03,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:03,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:03,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:03,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:08:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:03,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:03,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:03,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:03,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:08:03,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 18:08:03,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:03,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:03,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:08:03,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296600134] [2020-10-14 18:08:03,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:08:03,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:08:03,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236458344] [2020-10-14 18:08:03,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:08:03,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:03,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:08:03,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:08:03,117 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-10-14 18:08:03,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:03,330 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2020-10-14 18:08:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:08:03,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-14 18:08:03,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:03,341 INFO L225 Difference]: With dead ends: 62 [2020-10-14 18:08:03,341 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 18:08:03,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:08:03,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 18:08:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-14 18:08:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 18:08:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-14 18:08:03,387 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 21 [2020-10-14 18:08:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:03,387 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-14 18:08:03,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:08:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-14 18:08:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 18:08:03,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:03,389 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] [2020-10-14 18:08:03,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:08:03,390 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:03,391 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-10-14 18:08:03,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:03,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326368577] [2020-10-14 18:08:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:03,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:03,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:03,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 18:08:03,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-14 18:08:03,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:03,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:08:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:08:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 18:08:03,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:03,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:03,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:03,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:03,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:03,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:08:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:03,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:03,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:03,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:03,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:03,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:08:03,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:03,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:03,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:08:04,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326368577] [2020-10-14 18:08:04,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:08:04,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 18:08:04,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314718310] [2020-10-14 18:08:04,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:08:04,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:04,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:08:04,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:08:04,006 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 8 states. [2020-10-14 18:08:04,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:04,232 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-10-14 18:08:04,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 18:08:04,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-14 18:08:04,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:04,234 INFO L225 Difference]: With dead ends: 37 [2020-10-14 18:08:04,234 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 18:08:04,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:08:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 18:08:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-14 18:08:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 18:08:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 18:08:04,243 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 27 [2020-10-14 18:08:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:04,243 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 18:08:04,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:08:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 18:08:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 18:08:04,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:04,245 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] [2020-10-14 18:08:04,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:08:04,246 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:04,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:04,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1205224842, now seen corresponding path program 1 times [2020-10-14 18:08:04,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:04,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123987452] [2020-10-14 18:08:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:04,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:04,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:04,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 18:08:04,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:08:04,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-14 18:08:04,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:04,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:04,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:08:04,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:08:04,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 18:08:04,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:04,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:04,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:04,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:04,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:04,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:08:04,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:04,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:04,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:04,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:04,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:08:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:04,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:04,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:04,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:04,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:08:04,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:04,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:04,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:04,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:08:04,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123987452] [2020-10-14 18:08:04,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:04,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:08:04,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375849366] [2020-10-14 18:08:04,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:08:04,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:04,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:08:04,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:08:04,868 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 10 states. [2020-10-14 18:08:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:05,134 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2020-10-14 18:08:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:08:05,134 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-14 18:08:05,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:05,136 INFO L225 Difference]: With dead ends: 61 [2020-10-14 18:08:05,136 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 18:08:05,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:08:05,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 18:08:05,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-10-14 18:08:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 18:08:05,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-10-14 18:08:05,144 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 27 [2020-10-14 18:08:05,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:05,145 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-10-14 18:08:05,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:08:05,145 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-10-14 18:08:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 18:08:05,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:05,146 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 18:08:05,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:08:05,147 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:05,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:05,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1492634651, now seen corresponding path program 1 times [2020-10-14 18:08:05,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:05,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422750747] [2020-10-14 18:08:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:05,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:06,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:06,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:06,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:07,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:08,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:09,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 18:08:09,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 18:08:09,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4188 [2020-10-14 18:08:09,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:09,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:09,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:08:09,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:08:09,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 18:08:09,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:09,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:09,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:09,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:09,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:09,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:09,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:09,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:09,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:09,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:09,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:09,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:08:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:09,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:09,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:09,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:09,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:09,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:08:09,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:09,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:09,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:09,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:09,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:08:09,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422750747] [2020-10-14 18:08:09,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:09,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:08:09,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4297389] [2020-10-14 18:08:09,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:08:09,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:09,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:08:09,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:08:09,710 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 13 states. [2020-10-14 18:08:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:10,411 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2020-10-14 18:08:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:08:10,412 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-14 18:08:10,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:10,413 INFO L225 Difference]: With dead ends: 68 [2020-10-14 18:08:10,414 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 18:08:10,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:08:10,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 18:08:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-14 18:08:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 18:08:10,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-10-14 18:08:10,434 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 33 [2020-10-14 18:08:10,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:10,434 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-10-14 18:08:10,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:08:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-10-14 18:08:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 18:08:10,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:10,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 18:08:10,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:08:10,440 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:10,440 INFO L82 PathProgramCache]: Analyzing trace with hash -2145280396, now seen corresponding path program 2 times [2020-10-14 18:08:10,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:10,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570377953] [2020-10-14 18:08:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:10,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:10,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:10,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:10,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:11,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:11,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:11,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:11,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:11,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:15,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:15,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 18:08:15,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 18:08:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 18:08:15,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:15,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:08:15,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:08:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 18:08:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:08:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:15,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:15,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:15,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:15,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:15,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:08:15,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:15,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:15,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:08:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:15,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:15,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:15,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:15,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:15,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:08:15,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:15,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:15,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 18:08:15,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570377953] [2020-10-14 18:08:15,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:15,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:08:15,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273259938] [2020-10-14 18:08:15,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:08:15,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:15,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:08:15,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:08:15,769 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 13 states. [2020-10-14 18:08:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:16,217 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-10-14 18:08:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:08:16,218 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 18:08:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:16,219 INFO L225 Difference]: With dead ends: 61 [2020-10-14 18:08:16,219 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 18:08:16,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:08:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 18:08:16,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-10-14 18:08:16,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 18:08:16,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 18:08:16,232 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 36 [2020-10-14 18:08:16,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:16,234 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 18:08:16,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:08:16,234 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 18:08:16,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 18:08:16,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:16,236 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 18:08:16,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:08:16,236 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:16,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:16,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1680039082, now seen corresponding path program 3 times [2020-10-14 18:08:16,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:16,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845850303] [2020-10-14 18:08:16,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 18:08:16,258 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 18:08:16,258 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:08:16,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:08:16,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:08:16 BoogieIcfgContainer [2020-10-14 18:08:16,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:08:16,310 INFO L168 Benchmark]: Toolchain (without parser) took 14849.72 ms. Allocated memory was 148.9 MB in the beginning and 378.5 MB in the end (delta: 229.6 MB). Free memory was 104.9 MB in the beginning and 168.3 MB in the end (delta: -63.4 MB). Peak memory consumption was 166.3 MB. Max. memory is 7.1 GB. [2020-10-14 18:08:16,312 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-14 18:08:16,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.29 ms. Allocated memory is still 148.9 MB. Free memory was 104.9 MB in the beginning and 94.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-14 18:08:16,315 INFO L168 Benchmark]: Boogie Preprocessor took 129.88 ms. Allocated memory was 148.9 MB in the beginning and 203.9 MB in the end (delta: 55.1 MB). Free memory was 94.4 MB in the beginning and 181.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-14 18:08:16,316 INFO L168 Benchmark]: RCFGBuilder took 381.34 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 164.3 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-10-14 18:08:16,318 INFO L168 Benchmark]: TraceAbstraction took 13968.42 ms. Allocated memory was 203.9 MB in the beginning and 378.5 MB in the end (delta: 174.6 MB). Free memory was 163.3 MB in the beginning and 168.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 169.6 MB. Max. memory is 7.1 GB. [2020-10-14 18:08:16,327 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.29 ms. Allocated memory is still 148.9 MB. Free memory was 104.9 MB in the beginning and 94.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.88 ms. Allocated memory was 148.9 MB in the beginning and 203.9 MB in the end (delta: 55.1 MB). Free memory was 94.4 MB in the beginning and 181.3 MB in the end (delta: -86.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.34 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 164.3 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13968.42 ms. Allocated memory was 203.9 MB in the beginning and 378.5 MB in the end (delta: 174.6 MB). Free memory was 163.3 MB in the beginning and 168.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 169.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i