/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=0.6 --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 06:42:26,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:42:26,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:42:26,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:42:26,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:42:26,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:42:26,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:42:26,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:42:26,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:42:26,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:42:26,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:42:26,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:42:26,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:42:26,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:42:26,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:42:26,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:42:26,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:42:26,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:42:26,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:42:26,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:42:26,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:42:26,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:42:26,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:42:26,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:42:26,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:42:26,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:42:26,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:42:26,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:42:26,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:42:26,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:42:26,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:42:26,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:42:26,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:42:26,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:42:26,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:42:26,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:42:26,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:42:26,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:42:26,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:42:26,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:42:26,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:42:26,649 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 06:42:26,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:42:26,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:42:26,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:42:26,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:42:26,677 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:42:26,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:42:26,678 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:42:26,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:42:26,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:42:26,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:42:26,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:42:26,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:42:26,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:42:26,679 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:42:26,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:42:26,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:42:26,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:42:26,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:42:26,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:42:26,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:42:26,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:42:26,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:42:26,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:42:26,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:42:26,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:42:26,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:42:26,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:42:26,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:42:26,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:42:26,682 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:42:27,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:42:27,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:42:27,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:42:27,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:42:27,186 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:42:27,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 06:42:27,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6e565b85/0c0942bcc66a4e96a536b8cbc6373be0/FLAGb5dbd23eb [2020-09-25 06:42:27,925 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:42:27,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 06:42:27,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6e565b85/0c0942bcc66a4e96a536b8cbc6373be0/FLAGb5dbd23eb [2020-09-25 06:42:28,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6e565b85/0c0942bcc66a4e96a536b8cbc6373be0 [2020-09-25 06:42:28,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:42:28,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:42:28,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:28,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:42:28,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:42:28,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:28" (1/1) ... [2020-09-25 06:42:28,194 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 06:42:28, skipping insertion in model container [2020-09-25 06:42:28,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:28" (1/1) ... [2020-09-25 06:42:28,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:42:28,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:42:28,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:28,756 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:42:29,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:29,039 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:42:29,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:29 WrapperNode [2020-09-25 06:42:29,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:29,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:42:29,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:42:29,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:42:29,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:29" (1/1) ... [2020-09-25 06:42:29,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:29" (1/1) ... [2020-09-25 06:42:29,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:29" (1/1) ... [2020-09-25 06:42:29,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:29" (1/1) ... [2020-09-25 06:42:29,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:29" (1/1) ... [2020-09-25 06:42:29,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:29" (1/1) ... [2020-09-25 06:42:29,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:29" (1/1) ... [2020-09-25 06:42:29,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:42:29,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:42:29,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:42:29,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:42:29,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:29" (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 06:42:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:42:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:42:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:42:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:42:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:42:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:42:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:42:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:42:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:42:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:42:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:42:30,891 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:42:30,891 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:42:30,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:30 BoogieIcfgContainer [2020-09-25 06:42:30,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:42:30,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:42:30,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:42:30,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:42:30,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:42:28" (1/3) ... [2020-09-25 06:42:30,918 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 06:42:30, skipping insertion in model container [2020-09-25 06:42:30,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:29" (2/3) ... [2020-09-25 06:42:30,920 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 06:42:30, skipping insertion in model container [2020-09-25 06:42:30,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:30" (3/3) ... [2020-09-25 06:42:30,922 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2020-09-25 06:42:30,935 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:42:30,953 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:42:30,977 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:42:31,019 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:42:31,020 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:42:31,020 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:42:31,020 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:42:31,020 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:42:31,021 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:42:31,021 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:42:31,021 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:42:31,065 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:42:31,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 06:42:31,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:31,102 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 06:42:31,103 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:31,110 INFO L82 PathProgramCache]: Analyzing trace with hash -850053121, now seen corresponding path program 1 times [2020-09-25 06:42:31,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:31,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417672838] [2020-09-25 06:42:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:31,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:31,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:36,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:36,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 06:42:36,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:42:36,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:42:36,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:36,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:36,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:36,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:42:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 06:42:36,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:42:36,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:36,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:36,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:36,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:36,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 06:42:36,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:36,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:42:36,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:42:36,772 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 06:42:36,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417672838] [2020-09-25 06:42:36,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:36,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:42:36,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142980574] [2020-09-25 06:42:36,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:42:36,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:36,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:42:36,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:36,808 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 06:42:39,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:39,577 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 06:42:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:42:39,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-25 06:42:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:39,608 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 06:42:39,609 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 06:42:39,622 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 06:42:39,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 06:42:39,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 06:42:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 06:42:39,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 06:42:39,743 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 108 [2020-09-25 06:42:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:39,744 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 06:42:39,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:39,745 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 06:42:39,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 06:42:39,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:39,753 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 06:42:39,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:42:39,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:39,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:39,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1639648560, now seen corresponding path program 1 times [2020-09-25 06:42:39,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:39,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084953966] [2020-09-25 06:42:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:39,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:41,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 06:42:41,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:42:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1514 [2020-09-25 06:42:41,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:41,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 06:42:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:42:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:41,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:41,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:41,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:41,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:42:41,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:41,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:41,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:41,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:41,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:41,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:42:41,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:41,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:41,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:41,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:41,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:42:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:41,595 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 06:42:41,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084953966] [2020-09-25 06:42:41,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:41,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:42:41,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785533322] [2020-09-25 06:42:41,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:42:41,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:41,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:42:41,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:41,601 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 5 states. [2020-09-25 06:42:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:43,881 INFO L93 Difference]: Finished difference Result 1928 states and 2459 transitions. [2020-09-25 06:42:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:42:43,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 06:42:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:43,899 INFO L225 Difference]: With dead ends: 1928 [2020-09-25 06:42:43,899 INFO L226 Difference]: Without dead ends: 1206 [2020-09-25 06:42:43,904 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 06:42:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2020-09-25 06:42:43,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1036. [2020-09-25 06:42:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 06:42:43,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1250 transitions. [2020-09-25 06:42:43,981 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1250 transitions. Word has length 129 [2020-09-25 06:42:43,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:43,982 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1250 transitions. [2020-09-25 06:42:43,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1250 transitions. [2020-09-25 06:42:43,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 06:42:43,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:43,988 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 06:42:43,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:42:43,988 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:43,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1999519641, now seen corresponding path program 1 times [2020-09-25 06:42:43,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:43,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984239529] [2020-09-25 06:42:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:44,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:44,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:44,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:44,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:44,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:44,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:48,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:48,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 06:42:48,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4907 [2020-09-25 06:42:48,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:48,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:42:48,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:42:48,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:42:48,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:49,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:49,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:49,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:49,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 06:42:49,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:49,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:42:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:49,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:42:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:42:49,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:49,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:49,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:42:49,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:49,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 06:42:49,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:49,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:49,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:49,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:49,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:42:49,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:49,316 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 06:42:49,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984239529] [2020-09-25 06:42:49,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:49,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:42:49,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480356] [2020-09-25 06:42:49,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:42:49,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:49,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:42:49,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:42:49,323 INFO L87 Difference]: Start difference. First operand 1036 states and 1250 transitions. Second operand 8 states. [2020-09-25 06:42:50,394 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 06:42:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:52,157 INFO L93 Difference]: Finished difference Result 3198 states and 4083 transitions. [2020-09-25 06:42:52,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:42:52,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-09-25 06:42:52,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:52,168 INFO L225 Difference]: With dead ends: 3198 [2020-09-25 06:42:52,169 INFO L226 Difference]: Without dead ends: 1974 [2020-09-25 06:42:52,175 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 06:42:52,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2020-09-25 06:42:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1755. [2020-09-25 06:42:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-09-25 06:42:52,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2060 transitions. [2020-09-25 06:42:52,258 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2060 transitions. Word has length 133 [2020-09-25 06:42:52,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:52,260 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2060 transitions. [2020-09-25 06:42:52,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:42:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2060 transitions. [2020-09-25 06:42:52,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 06:42:52,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:52,266 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 06:42:52,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:42:52,268 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:52,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1160097473, now seen corresponding path program 1 times [2020-09-25 06:42:52,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:52,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201693327] [2020-09-25 06:42:52,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:52,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:57,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:57,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 06:42:57,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:42:57,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:57,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:42:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:42:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:42:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:57,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:57,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:57,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:42:57,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:57,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:42:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:57,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:57,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:57,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:57,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:57,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:57,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:57,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:42:57,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 06:42:57,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:57,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:57,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:57,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:42:57,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:57,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:57,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:57,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:42:57,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:57,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 06:42:57,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:57,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:57,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:57,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:57,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:42:57,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:57,943 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 06:42:57,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201693327] [2020-09-25 06:42:57,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:57,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:42:57,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257408616] [2020-09-25 06:42:57,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:42:57,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:57,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:42:57,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:42:57,949 INFO L87 Difference]: Start difference. First operand 1755 states and 2060 transitions. Second operand 10 states. [2020-09-25 06:43:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:01,125 INFO L93 Difference]: Finished difference Result 4453 states and 5685 transitions. [2020-09-25 06:43:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 06:43:01,126 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 154 [2020-09-25 06:43:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:01,143 INFO L225 Difference]: With dead ends: 4453 [2020-09-25 06:43:01,144 INFO L226 Difference]: Without dead ends: 2722 [2020-09-25 06:43:01,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-09-25 06:43:01,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2020-09-25 06:43:01,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2124. [2020-09-25 06:43:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2020-09-25 06:43:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2413 transitions. [2020-09-25 06:43:01,244 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2413 transitions. Word has length 154 [2020-09-25 06:43:01,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:01,244 INFO L479 AbstractCegarLoop]: Abstraction has 2124 states and 2413 transitions. [2020-09-25 06:43:01,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:43:01,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2413 transitions. [2020-09-25 06:43:01,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 06:43:01,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:01,250 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 06:43:01,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:43:01,251 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:01,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:01,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1346264804, now seen corresponding path program 1 times [2020-09-25 06:43:01,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:01,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959162726] [2020-09-25 06:43:01,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:01,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:02,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 06:43:02,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:43:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-09-25 06:43:02,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:02,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 06:43:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:43:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:02,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:43:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:02,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:02,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:02,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:02,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:02,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:43:02,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:43:02,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:02,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:02,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:43:02,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:02,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 06:43:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:02,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:02,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:02,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:43:02,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 06:43:02,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:02,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:02,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:02,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:02,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 06:43:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:02,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:43:02,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 06:43:02,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:02,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:43:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:02,892 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 06:43:02,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959162726] [2020-09-25 06:43:02,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:02,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:43:02,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538480867] [2020-09-25 06:43:02,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:43:02,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:02,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:43:02,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:43:02,895 INFO L87 Difference]: Start difference. First operand 2124 states and 2413 transitions. Second operand 9 states. [2020-09-25 06:43:03,748 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-25 06:43:06,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:06,077 INFO L93 Difference]: Finished difference Result 5492 states and 6941 transitions. [2020-09-25 06:43:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 06:43:06,079 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 06:43:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:06,107 INFO L225 Difference]: With dead ends: 5492 [2020-09-25 06:43:06,107 INFO L226 Difference]: Without dead ends: 3333 [2020-09-25 06:43:06,116 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 06:43:06,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2020-09-25 06:43:06,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 2743. [2020-09-25 06:43:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2743 states. [2020-09-25 06:43:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 3116 transitions. [2020-09-25 06:43:06,223 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 3116 transitions. Word has length 171 [2020-09-25 06:43:06,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:06,224 INFO L479 AbstractCegarLoop]: Abstraction has 2743 states and 3116 transitions. [2020-09-25 06:43:06,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:43:06,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 3116 transitions. [2020-09-25 06:43:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 06:43:06,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:06,232 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 06:43:06,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:43:06,233 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:06,233 INFO L82 PathProgramCache]: Analyzing trace with hash 900247765, now seen corresponding path program 1 times [2020-09-25 06:43:06,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:06,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366233188] [2020-09-25 06:43:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:07,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:08,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:11,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 06:43:11,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:11,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:43:11,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:11,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:11,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:43:11,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:43:11,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:43:11,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:43:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:11,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:11,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:11,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:11,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:43:11,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:11,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:43:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:11,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:11,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:11,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 06:43:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 06:43:11,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:11,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:43:11,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:11,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 06:43:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:11,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:11,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:43:11,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:43:11,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:11,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:11,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:11,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:43:11,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:11,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:43:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 47 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:43:12,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366233188] [2020-09-25 06:43:12,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:12,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:43:12,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351433382] [2020-09-25 06:43:12,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:43:12,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:12,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:43:12,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:43:12,034 INFO L87 Difference]: Start difference. First operand 2743 states and 3116 transitions. Second operand 8 states. [2020-09-25 06:43:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:15,221 INFO L93 Difference]: Finished difference Result 5834 states and 6646 transitions. [2020-09-25 06:43:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:43:15,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 176 [2020-09-25 06:43:15,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:15,235 INFO L225 Difference]: With dead ends: 5834 [2020-09-25 06:43:15,235 INFO L226 Difference]: Without dead ends: 3256 [2020-09-25 06:43:15,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:43:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2020-09-25 06:43:15,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3041. [2020-09-25 06:43:15,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3041 states. [2020-09-25 06:43:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 3429 transitions. [2020-09-25 06:43:15,323 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 3429 transitions. Word has length 176 [2020-09-25 06:43:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:15,324 INFO L479 AbstractCegarLoop]: Abstraction has 3041 states and 3429 transitions. [2020-09-25 06:43:15,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:43:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 3429 transitions. [2020-09-25 06:43:15,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 06:43:15,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:15,333 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:15,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:43:15,333 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:15,334 INFO L82 PathProgramCache]: Analyzing trace with hash -831779598, now seen corresponding path program 1 times [2020-09-25 06:43:15,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:15,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684436253] [2020-09-25 06:43:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:15,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:15,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking...