/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=0.8 --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_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:51:26,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:51:26,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:51:26,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:51:26,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:51:26,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:51:26,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:51:26,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:51:26,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:51:26,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:51:26,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:51:26,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:51:26,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:51:26,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:51:26,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:51:26,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:51:26,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:51:26,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:51:26,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:51:26,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:51:26,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:51:26,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:51:26,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:51:26,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:51:26,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:51:26,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:51:26,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:51:26,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:51:26,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:51:26,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-25 07:51:26,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:51:26,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:51:26,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:51:26,518 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 07:51:26,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:51:26,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:51:26,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:51:26,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:51:26,569 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:51:26,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:51:26,570 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:51:26,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:51:26,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:51:26,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:51:26,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:51:26,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:51:26,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:51:26,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:51:26,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:51:26,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:51:26,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:51:26,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:51:26,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:51:26,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:51:26,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:51:26,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:51:26,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:51:26,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:51:26,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:51:26,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:51:26,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:51:26,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:51:26,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:51:26,576 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:51:27,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:51:27,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:51:27,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:51:27,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:51:27,045 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:51:27,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 07:51:27,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f411b10ad/bd5b7b159bef492f91df79673daa3a0a/FLAG60e82056d [2020-09-25 07:51:27,818 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:51:27,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 07:51:27,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f411b10ad/bd5b7b159bef492f91df79673daa3a0a/FLAG60e82056d [2020-09-25 07:51:28,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f411b10ad/bd5b7b159bef492f91df79673daa3a0a [2020-09-25 07:51:28,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:51:28,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:51:28,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:28,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:51:28,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:51:28,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:28" (1/1) ... [2020-09-25 07:51:28,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5402282b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28, skipping insertion in model container [2020-09-25 07:51:28,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:28" (1/1) ... [2020-09-25 07:51:28,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:51:28,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:51:28,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:28,587 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:51:28,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:28,825 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:51:28,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28 WrapperNode [2020-09-25 07:51:28,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:28,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:51:28,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:51:28,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:51:28,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28" (1/1) ... [2020-09-25 07:51:28,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28" (1/1) ... [2020-09-25 07:51:28,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28" (1/1) ... [2020-09-25 07:51:28,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28" (1/1) ... [2020-09-25 07:51:28,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28" (1/1) ... [2020-09-25 07:51:28,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28" (1/1) ... [2020-09-25 07:51:28,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28" (1/1) ... [2020-09-25 07:51:28,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:51:28,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:51:28,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:51:28,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:51:28,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28" (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 07:51:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:51:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:51:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:51:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:51:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:51:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:51:29,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:51:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:51:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:51:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:51:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:51:30,399 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:51:30,400 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:51:30,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:30 BoogieIcfgContainer [2020-09-25 07:51:30,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:51:30,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:51:30,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:51:30,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:51:30,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:51:28" (1/3) ... [2020-09-25 07:51:30,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebc44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:30, skipping insertion in model container [2020-09-25 07:51:30,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:28" (2/3) ... [2020-09-25 07:51:30,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebc44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:30, skipping insertion in model container [2020-09-25 07:51:30,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:30" (3/3) ... [2020-09-25 07:51:30,419 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2020-09-25 07:51:30,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:51:30,441 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:51:30,463 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:51:30,499 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:51:30,499 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:51:30,499 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:51:30,500 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:51:30,500 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:51:30,500 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:51:30,500 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:51:30,500 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:51:30,533 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:51:30,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 07:51:30,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:30,554 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] [2020-09-25 07:51:30,554 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:30,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:30,562 INFO L82 PathProgramCache]: Analyzing trace with hash -850053121, now seen corresponding path program 1 times [2020-09-25 07:51:30,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:30,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417672838] [2020-09-25 07:51:30,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:30,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:31,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:32,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:35,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:35,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 07:51:35,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:51:35,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:51:35,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:35,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:35,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:35,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 07:51:35,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 07:51:35,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:51:36,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:36,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:36,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:36,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:36,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 07:51:36,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:36,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:51:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:36,309 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 07:51:36,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417672838] [2020-09-25 07:51:36,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:36,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 07:51:36,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745928199] [2020-09-25 07:51:36,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:36,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:36,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:36,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:36,341 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 07:51:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:38,839 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 07:51:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:51:38,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-25 07:51:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:38,868 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 07:51:38,868 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 07:51:38,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:38,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 07:51:38,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 07:51:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 07:51:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 07:51:38,988 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 108 [2020-09-25 07:51:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:38,989 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 07:51:38,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 07:51:39,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 07:51:39,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:39,001 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] [2020-09-25 07:51:39,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:51:39,002 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:39,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:39,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1639648560, now seen corresponding path program 1 times [2020-09-25 07:51:39,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:39,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365482885] [2020-09-25 07:51:39,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:39,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:40,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:40,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 07:51:40,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:51:40,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1437 [2020-09-25 07:51:40,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:40,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:40,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:40,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:51:40,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:51:40,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:40,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:40,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:40,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:40,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:40,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:51:40,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:40,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:40,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:40,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:40,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:40,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:40,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:40,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:40,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:51:40,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:40,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:40,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:40,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:40,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:51:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:40,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365482885] [2020-09-25 07:51:40,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:40,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:51:40,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012798437] [2020-09-25 07:51:40,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:40,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:40,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:40,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:40,686 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 5 states. [2020-09-25 07:51:42,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:42,689 INFO L93 Difference]: Finished difference Result 1928 states and 2459 transitions. [2020-09-25 07:51:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:42,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 07:51:42,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:42,702 INFO L225 Difference]: With dead ends: 1928 [2020-09-25 07:51:42,702 INFO L226 Difference]: Without dead ends: 1206 [2020-09-25 07:51:42,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:51:42,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2020-09-25 07:51:42,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1036. [2020-09-25 07:51:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 07:51:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1250 transitions. [2020-09-25 07:51:42,773 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1250 transitions. Word has length 129 [2020-09-25 07:51:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:42,773 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1250 transitions. [2020-09-25 07:51:42,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1250 transitions. [2020-09-25 07:51:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 07:51:42,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:42,784 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:51:42,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:51:42,785 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:42,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:42,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1999519641, now seen corresponding path program 1 times [2020-09-25 07:51:42,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:42,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063127020] [2020-09-25 07:51:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:42,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:47,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:47,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 07:51:47,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:47,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4555 [2020-09-25 07:51:47,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:47,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:51:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:51:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:51:47,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:47,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:47,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:47,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:47,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:47,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:47,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 07:51:47,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:47,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:47,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:51:47,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:47,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:51:47,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:51:47,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:47,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:47,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:47,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:51:47,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:47,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 07:51:47,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:47,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:51:47,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:47,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063127020] [2020-09-25 07:51:47,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:47,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:51:47,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480356] [2020-09-25 07:51:47,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:51:47,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:47,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:51:47,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:51:47,857 INFO L87 Difference]: Start difference. First operand 1036 states and 1250 transitions. Second operand 8 states. [2020-09-25 07:51:48,993 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 07:51:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:50,756 INFO L93 Difference]: Finished difference Result 3198 states and 4083 transitions. [2020-09-25 07:51:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 07:51:50,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-09-25 07:51:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:50,770 INFO L225 Difference]: With dead ends: 3198 [2020-09-25 07:51:50,771 INFO L226 Difference]: Without dead ends: 1974 [2020-09-25 07:51:50,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 07:51:50,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2020-09-25 07:51:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1755. [2020-09-25 07:51:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-09-25 07:51:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2060 transitions. [2020-09-25 07:51:50,858 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2060 transitions. Word has length 133 [2020-09-25 07:51:50,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:50,860 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2060 transitions. [2020-09-25 07:51:50,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:51:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2060 transitions. [2020-09-25 07:51:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 07:51:50,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:50,866 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 07:51:50,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:51:50,866 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:50,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:50,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1160097473, now seen corresponding path program 1 times [2020-09-25 07:51:50,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:50,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201693327] [2020-09-25 07:51:50,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:50,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:52,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:55,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:55,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 07:51:55,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 07:51:55,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:55,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:51:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:51:55,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 07:51:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:56,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:56,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:56,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:56,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:56,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:51:56,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:56,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:56,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:51:56,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:56,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:51:56,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:56,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:56,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:56,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:51:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 07:51:56,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:56,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:51:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:56,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:51:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:56,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:56,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:51:56,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:56,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 07:51:56,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:56,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:56,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:56,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:56,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:51:56,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 07:51:56,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201693327] [2020-09-25 07:51:56,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:56,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:51:56,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578033655] [2020-09-25 07:51:56,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:51:56,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:56,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:51:56,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:51:56,400 INFO L87 Difference]: Start difference. First operand 1755 states and 2060 transitions. Second operand 10 states. [2020-09-25 07:51:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:59,742 INFO L93 Difference]: Finished difference Result 4952 states and 6211 transitions. [2020-09-25 07:51:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 07:51:59,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 154 [2020-09-25 07:51:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:59,762 INFO L225 Difference]: With dead ends: 4952 [2020-09-25 07:51:59,763 INFO L226 Difference]: Without dead ends: 3221 [2020-09-25 07:51:59,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2020-09-25 07:51:59,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2020-09-25 07:51:59,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 2788. [2020-09-25 07:51:59,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2788 states. [2020-09-25 07:51:59,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3228 transitions. [2020-09-25 07:51:59,867 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3228 transitions. Word has length 154 [2020-09-25 07:51:59,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:59,868 INFO L479 AbstractCegarLoop]: Abstraction has 2788 states and 3228 transitions. [2020-09-25 07:51:59,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:51:59,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3228 transitions. [2020-09-25 07:51:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 07:51:59,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:59,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 07:51:59,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:51:59,876 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:59,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1346264804, now seen corresponding path program 1 times [2020-09-25 07:51:59,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:59,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806497599] [2020-09-25 07:51:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:01,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:01,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 07:52:01,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:52:01,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-09-25 07:52:01,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:01,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:01,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:01,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 07:52:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 07:52:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:01,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:01,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:01,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:01,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:52:01,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:01,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:01,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:01,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:01,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:01,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:52:01,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:01,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:52:01,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:01,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:52:01,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:01,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 07:52:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:01,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:01,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:01,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:01,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:52:01,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 07:52:01,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:01,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:01,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:01,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:01,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 07:52:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:01,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:01,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:01,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:52:01,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 07:52:01,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:01,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:01,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:52:01,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 07:52:01,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806497599] [2020-09-25 07:52:01,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:01,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:52:01,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763719005] [2020-09-25 07:52:01,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:52:01,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:01,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:52:01,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:52:01,504 INFO L87 Difference]: Start difference. First operand 2788 states and 3228 transitions. Second operand 9 states. [2020-09-25 07:52:02,260 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-25 07:52:04,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:04,493 INFO L93 Difference]: Finished difference Result 7215 states and 9157 transitions. [2020-09-25 07:52:04,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 07:52:04,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 07:52:04,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:04,522 INFO L225 Difference]: With dead ends: 7215 [2020-09-25 07:52:04,523 INFO L226 Difference]: Without dead ends: 4392 [2020-09-25 07:52:04,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-09-25 07:52:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2020-09-25 07:52:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 3749. [2020-09-25 07:52:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3749 states. [2020-09-25 07:52:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3749 states to 3749 states and 4333 transitions. [2020-09-25 07:52:04,669 INFO L78 Accepts]: Start accepts. Automaton has 3749 states and 4333 transitions. Word has length 171 [2020-09-25 07:52:04,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:04,669 INFO L479 AbstractCegarLoop]: Abstraction has 3749 states and 4333 transitions. [2020-09-25 07:52:04,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:52:04,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states and 4333 transitions. [2020-09-25 07:52:04,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 07:52:04,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:04,679 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 07:52:04,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:52:04,680 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:04,680 INFO L82 PathProgramCache]: Analyzing trace with hash 900247765, now seen corresponding path program 1 times [2020-09-25 07:52:04,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:04,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049965897] [2020-09-25 07:52:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:05,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:05,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:05,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:09,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:09,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 07:52:09,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:52:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 07:52:09,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:09,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:52:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:52:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 07:52:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:09,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:09,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:09,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:09,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:52:09,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:09,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:09,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:52:09,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:09,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:09,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:10,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 07:52:10,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 07:52:10,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:10,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:52:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:52:10,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:10,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 07:52:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:10,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 07:52:10,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:10,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 07:52:10,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:10,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:52:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:52:10,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049965897] [2020-09-25 07:52:10,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:10,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:52:10,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899814592] [2020-09-25 07:52:10,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:52:10,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:10,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:52:10,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:52:10,286 INFO L87 Difference]: Start difference. First operand 3749 states and 4333 transitions. Second operand 10 states. [2020-09-25 07:52:11,067 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-09-25 07:52:13,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:13,821 INFO L93 Difference]: Finished difference Result 8240 states and 9640 transitions. [2020-09-25 07:52:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 07:52:13,822 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-09-25 07:52:13,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:13,844 INFO L225 Difference]: With dead ends: 8240 [2020-09-25 07:52:13,844 INFO L226 Difference]: Without dead ends: 4656 [2020-09-25 07:52:13,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2020-09-25 07:52:13,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4656 states. [2020-09-25 07:52:13,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4656 to 4178. [2020-09-25 07:52:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4178 states. [2020-09-25 07:52:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 4774 transitions. [2020-09-25 07:52:13,965 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 4774 transitions. Word has length 176 [2020-09-25 07:52:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:13,966 INFO L479 AbstractCegarLoop]: Abstraction has 4178 states and 4774 transitions. [2020-09-25 07:52:13,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:52:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 4774 transitions. [2020-09-25 07:52:13,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 07:52:13,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:13,979 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:13,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:52:13,980 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:13,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:13,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1085624187, now seen corresponding path program 1 times [2020-09-25 07:52:13,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:13,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173418027] [2020-09-25 07:52:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:14,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:16,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:16,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:16,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:16,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking...