/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:33:25,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:33:25,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:33:25,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:33:25,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:33:25,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:33:25,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:33:25,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:33:25,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:33:25,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:33:25,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:33:25,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:33:25,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:33:25,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:33:25,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:33:25,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:33:25,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:33:25,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:33:25,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:33:25,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:33:25,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:33:25,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:33:25,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:33:25,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:33:25,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:33:25,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:33:25,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:33:25,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:33:25,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:33:25,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:33:25,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:33:25,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:33:25,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:33:25,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:33:25,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:33:25,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:33:25,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:33:25,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:33:25,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:33:25,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:33:25,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:33:25,844 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 [2020-09-25 05:33:25,877 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:33:25,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:33:25,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:33:25,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:33:25,883 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:33:25,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:33:25,883 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:33:25,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:33:25,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:33:25,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:33:25,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:33:25,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:33:25,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:33:25,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:33:25,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:33:25,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:33:25,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:33:25,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:33:25,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:33:25,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:33:25,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:33:25,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:33:25,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:33:25,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:33:25,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:33:25,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:33:25,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:33:25,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:33:25,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:33:25,888 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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:33:26,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:33:26,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:33:26,368 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:33:26,370 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:33:26,370 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:33:26,371 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 05:33:26,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41c3aedb/bf2756988ee845fea771134a20a41315/FLAG39bd94d85 [2020-09-25 05:33:27,077 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:33:27,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 05:33:27,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41c3aedb/bf2756988ee845fea771134a20a41315/FLAG39bd94d85 [2020-09-25 05:33:27,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41c3aedb/bf2756988ee845fea771134a20a41315 [2020-09-25 05:33:27,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:33:27,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:33:27,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:27,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:33:27,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:33:27,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:27" (1/1) ... [2020-09-25 05:33:27,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:27, skipping insertion in model container [2020-09-25 05:33:27,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:33:27" (1/1) ... [2020-09-25 05:33:27,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:33:27,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:33:27,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:27,998 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:33:28,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:33:28,256 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:33:28,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:28 WrapperNode [2020-09-25 05:33:28,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:33:28,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:33:28,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:33:28,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:33:28,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:28" (1/1) ... [2020-09-25 05:33:28,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:28" (1/1) ... [2020-09-25 05:33:28,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:28" (1/1) ... [2020-09-25 05:33:28,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:28" (1/1) ... [2020-09-25 05:33:28,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:28" (1/1) ... [2020-09-25 05:33:28,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:28" (1/1) ... [2020-09-25 05:33:28,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:28" (1/1) ... [2020-09-25 05:33:28,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:33:28,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:33:28,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:33:28,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:33:28,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:28" (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 [2020-09-25 05:33:28,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:33:28,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:33:28,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:33:28,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:33:28,450 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:33:28,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:33:28,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:33:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:33:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:33:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:33:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:33:29,861 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:33:29,861 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:33:29,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:29 BoogieIcfgContainer [2020-09-25 05:33:29,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:33:29,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:33:29,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:33:29,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:33:29,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:33:27" (1/3) ... [2020-09-25 05:33:29,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:29, skipping insertion in model container [2020-09-25 05:33:29,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:33:28" (2/3) ... [2020-09-25 05:33:29,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:33:29, skipping insertion in model container [2020-09-25 05:33:29,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:33:29" (3/3) ... [2020-09-25 05:33:29,892 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label13.c [2020-09-25 05:33:29,905 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:33:29,923 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:33:29,946 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:33:29,989 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:33:29,989 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:33:29,989 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:33:29,990 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:33:29,990 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:33:29,990 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:33:29,990 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:33:29,990 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:33:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:33:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 05:33:30,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:30,048 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] [2020-09-25 05:33:30,049 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:30,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:30,056 INFO L82 PathProgramCache]: Analyzing trace with hash -946278635, now seen corresponding path program 1 times [2020-09-25 05:33:30,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:30,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 05:33:30,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:30,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:31,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:35,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:35,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 05:33:35,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:33:35,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:33:35,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:35,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:33:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 05:33:35,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:33:35,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:35,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:35,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:35,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:35,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:33:35,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:35,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:35,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:33:35,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:35,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 05:33:35,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:35,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:33:35,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607504409] [2020-09-25 05:33:35,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:33:35,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:35,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:33:35,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:33:35,740 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:33:37,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:37,987 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 05:33:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:33:37,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-09-25 05:33:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:38,035 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 05:33:38,035 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 05:33:38,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:33:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 05:33:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 05:33:38,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 05:33:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 05:33:38,160 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 151 [2020-09-25 05:33:38,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:38,161 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 05:33:38,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:33:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 05:33:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 05:33:38,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:38,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:38,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:33:38,175 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:38,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:38,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1054538660, now seen corresponding path program 1 times [2020-09-25 05:33:38,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:38,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577140713] [2020-09-25 05:33:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:38,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:40,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:41,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:41,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:43,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 05:33:43,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:33:43,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 05:33:43,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:43,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:33:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:33:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:33:43,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:43,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:43,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:43,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:43,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:43,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 05:33:43,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:43,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:43,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:33:43,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:43,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:43,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:43,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:43,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:43,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 05:33:43,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:43,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:43,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:33:43,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:43,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577140713] [2020-09-25 05:33:43,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:33:43,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:33:43,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358931154] [2020-09-25 05:33:43,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:33:43,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:43,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:33:43,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:33:43,566 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 8 states. [2020-09-25 05:33:46,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:46,225 INFO L93 Difference]: Finished difference Result 1723 states and 2114 transitions. [2020-09-25 05:33:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:33:46,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2020-09-25 05:33:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:46,233 INFO L225 Difference]: With dead ends: 1723 [2020-09-25 05:33:46,233 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 05:33:46,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:33:46,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 05:33:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 952. [2020-09-25 05:33:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2020-09-25 05:33:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1181 transitions. [2020-09-25 05:33:46,296 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1181 transitions. Word has length 172 [2020-09-25 05:33:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:46,296 INFO L479 AbstractCegarLoop]: Abstraction has 952 states and 1181 transitions. [2020-09-25 05:33:46,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:33:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1181 transitions. [2020-09-25 05:33:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 05:33:46,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:46,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:46,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:33:46,304 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:46,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:46,304 INFO L82 PathProgramCache]: Analyzing trace with hash 657710585, now seen corresponding path program 1 times [2020-09-25 05:33:46,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:46,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384181082] [2020-09-25 05:33:46,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:46,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:46,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:47,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:47,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 05:33:51,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:33:51,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:51,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:33:51,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:33:51,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:33:51,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:51,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:51,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:51,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:33:51,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:33:51,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:33:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:51,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:33:51,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:33:51,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:33:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:51,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:33:51,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:51,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:33:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:51,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:51,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:51,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:33:51,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:51,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 05:33:51,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:51,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:51,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:51,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:33:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:33:51,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:33:51,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384181082] [2020-09-25 05:33:51,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:51,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:33:51,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307480512] [2020-09-25 05:33:51,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:33:51,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:51,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:33:51,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:33:51,998 INFO L87 Difference]: Start difference. First operand 952 states and 1181 transitions. Second operand 7 states. [2020-09-25 05:33:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:54,689 INFO L93 Difference]: Finished difference Result 2262 states and 2933 transitions. [2020-09-25 05:33:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:33:54,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 05:33:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:54,713 INFO L225 Difference]: With dead ends: 2262 [2020-09-25 05:33:54,713 INFO L226 Difference]: Without dead ends: 1334 [2020-09-25 05:33:54,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:33:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-09-25 05:33:54,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1258. [2020-09-25 05:33:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-09-25 05:33:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1554 transitions. [2020-09-25 05:33:54,793 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1554 transitions. Word has length 201 [2020-09-25 05:33:54,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:54,794 INFO L479 AbstractCegarLoop]: Abstraction has 1258 states and 1554 transitions. [2020-09-25 05:33:54,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:33:54,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1554 transitions. [2020-09-25 05:33:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 05:33:54,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:54,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:54,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:33:54,804 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:54,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:54,805 INFO L82 PathProgramCache]: Analyzing trace with hash 38975682, now seen corresponding path program 1 times [2020-09-25 05:33:54,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:54,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879105860] [2020-09-25 05:33:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:54,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:55,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:55,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:59,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 05:33:59,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:33:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:33:59,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:59,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:33:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 05:33:59,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 05:33:59,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:33:59,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:59,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:59,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:59,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:33:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:59,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:33:59,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:59,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:59,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:59,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:59,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:00,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:00,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:00,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:34:00,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:34:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:00,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:34:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 05:34:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:00,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:00,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:34:00,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:00,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 05:34:00,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:00,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:00,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:34:00,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:00,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879105860] [2020-09-25 05:34:00,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:00,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:00,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658970358] [2020-09-25 05:34:00,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:00,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:00,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:00,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:00,218 INFO L87 Difference]: Start difference. First operand 1258 states and 1554 transitions. Second operand 7 states. [2020-09-25 05:34:03,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:03,503 INFO L93 Difference]: Finished difference Result 2691 states and 3405 transitions. [2020-09-25 05:34:03,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:34:03,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-09-25 05:34:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:03,515 INFO L225 Difference]: With dead ends: 2691 [2020-09-25 05:34:03,515 INFO L226 Difference]: Without dead ends: 1441 [2020-09-25 05:34:03,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:03,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2020-09-25 05:34:03,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1393. [2020-09-25 05:34:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2020-09-25 05:34:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1687 transitions. [2020-09-25 05:34:03,583 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1687 transitions. Word has length 206 [2020-09-25 05:34:03,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:03,584 INFO L479 AbstractCegarLoop]: Abstraction has 1393 states and 1687 transitions. [2020-09-25 05:34:03,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1687 transitions. [2020-09-25 05:34:03,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 05:34:03,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:03,593 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:03,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:03,593 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:03,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:03,594 INFO L82 PathProgramCache]: Analyzing trace with hash -495080653, now seen corresponding path program 1 times [2020-09-25 05:34:03,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:03,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065559836] [2020-09-25 05:34:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:03,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:04,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:05,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:05,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:08,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 05:34:08,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:34:08,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:08,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 05:34:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:34:08,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:08,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:08,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:08,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:08,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:34:08,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:08,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:08,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:08,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:08,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:34:08,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:34:08,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:08,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:08,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:34:08,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:08,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 05:34:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:08,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:08,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:08,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 05:34:08,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:08,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 05:34:08,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:08,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:34:08,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:34:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:34:08,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065559836] [2020-09-25 05:34:08,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:08,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:34:08,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375061482] [2020-09-25 05:34:08,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:08,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:08,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:08,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:08,935 INFO L87 Difference]: Start difference. First operand 1393 states and 1687 transitions. Second operand 7 states. [2020-09-25 05:34:10,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:10,900 INFO L93 Difference]: Finished difference Result 2461 states and 2939 transitions. [2020-09-25 05:34:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:34:10,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-09-25 05:34:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:10,913 INFO L225 Difference]: With dead ends: 2461 [2020-09-25 05:34:10,913 INFO L226 Difference]: Without dead ends: 1567 [2020-09-25 05:34:10,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:34:10,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2020-09-25 05:34:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1546. [2020-09-25 05:34:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1546 states. [2020-09-25 05:34:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 1857 transitions. [2020-09-25 05:34:10,990 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 1857 transitions. Word has length 210 [2020-09-25 05:34:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:10,990 INFO L479 AbstractCegarLoop]: Abstraction has 1546 states and 1857 transitions. [2020-09-25 05:34:10,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 1857 transitions. [2020-09-25 05:34:10,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 05:34:10,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:10,999 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:10,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:34:11,000 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:11,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1959609365, now seen corresponding path program 1 times [2020-09-25 05:34:11,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:11,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686934386] [2020-09-25 05:34:11,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:12,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:13,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking...