/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:23,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:23,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:23,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:23,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:23,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:23,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:23,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:23,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:23,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:23,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:23,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:23,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:23,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:23,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:23,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:23,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:23,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:23,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:23,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:23,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:23,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:23,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:23,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:23,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:23,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:23,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:23,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:23,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:23,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:23,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:23,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:23,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:23,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:23,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:23,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:23,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:23,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:23,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:23,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:23,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:23,636 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 13:35:23,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:23,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:23,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:23,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:23,680 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:23,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:23,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:23,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:23,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:23,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:23,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:23,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:23,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:23,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:23,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:23,683 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:23,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:23,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:23,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:23,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:23,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:23,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:23,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:23,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:23,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:23,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:23,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:23,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:23,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:23,685 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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:35:24,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:24,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:24,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:24,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:24,224 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:24,225 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 13:35:24,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f73437d3/6bf5bd118a96442489355196edbf64aa/FLAG67a86ce35 [2020-09-25 13:35:24,976 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:24,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 13:35:24,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f73437d3/6bf5bd118a96442489355196edbf64aa/FLAG67a86ce35 [2020-09-25 13:35:25,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f73437d3/6bf5bd118a96442489355196edbf64aa [2020-09-25 13:35:25,242 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:25,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:25,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:25,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:25,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:25,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:25" (1/1) ... [2020-09-25 13:35:25,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47211fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:25, skipping insertion in model container [2020-09-25 13:35:25,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:25" (1/1) ... [2020-09-25 13:35:25,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:25,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:25,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:25,796 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:26,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:26,127 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:26,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:26 WrapperNode [2020-09-25 13:35:26,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:26,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:26,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:26,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:26,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:26" (1/1) ... [2020-09-25 13:35:26,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:26" (1/1) ... [2020-09-25 13:35:26,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:26" (1/1) ... [2020-09-25 13:35:26,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:26" (1/1) ... [2020-09-25 13:35:26,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:26" (1/1) ... [2020-09-25 13:35:26,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:26" (1/1) ... [2020-09-25 13:35:26,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:26" (1/1) ... [2020-09-25 13:35:26,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:26,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:26,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:26,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:26,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:26" (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 13:35:26,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:26,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:26,347 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:26,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:26,348 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:26,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:26,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:26,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:27,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:27,804 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:27,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:27 BoogieIcfgContainer [2020-09-25 13:35:27,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:27,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:27,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:27,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:27,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:25" (1/3) ... [2020-09-25 13:35:27,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4381e4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:27, skipping insertion in model container [2020-09-25 13:35:27,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:26" (2/3) ... [2020-09-25 13:35:27,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4381e4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:27, skipping insertion in model container [2020-09-25 13:35:27,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:27" (3/3) ... [2020-09-25 13:35:27,846 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label55.c [2020-09-25 13:35:27,861 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:27,877 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:27,905 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:27,950 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:27,951 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:27,951 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:27,951 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:27,951 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:27,952 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:27,952 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:27,952 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:27,997 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:35:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 13:35:28,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:28,009 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] [2020-09-25 13:35:28,009 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:28,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:28,016 INFO L82 PathProgramCache]: Analyzing trace with hash -18090369, now seen corresponding path program 1 times [2020-09-25 13:35:28,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:28,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895732269] [2020-09-25 13:35:28,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:28,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:28,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:28,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:35:28,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:35:28,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-09-25 13:35:28,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:29,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:29,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:29,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:29,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:35:29,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:35:29,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:29,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:29,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:29,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:29,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:35:29,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:29,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:29,190 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 13:35:29,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895732269] [2020-09-25 13:35:29,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:29,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:35:29,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897400775] [2020-09-25 13:35:29,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:35:29,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:29,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:35:29,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:35:29,225 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:35:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:31,276 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 13:35:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:35:31,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-25 13:35:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:31,300 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 13:35:31,300 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 13:35:31,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:31,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 13:35:31,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 13:35:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 13:35:31,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 13:35:31,404 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 37 [2020-09-25 13:35:31,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:31,405 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 13:35:31,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:35:31,405 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 13:35:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 13:35:31,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:31,412 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:35:31,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:31,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:31,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:31,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1996109808, now seen corresponding path program 1 times [2020-09-25 13:35:31,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:31,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613110803] [2020-09-25 13:35:31,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:35,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 13:35:35,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:35,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4181 [2020-09-25 13:35:35,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:35,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:35,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 13:35:35,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:35,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:35,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:35,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:35,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:35,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:35:35,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:35,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:35,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:35,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:35,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:35,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:36,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:36,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:36,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 13:35:36,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:36,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:35:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:35:36,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613110803] [2020-09-25 13:35:36,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:36,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:35:36,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152542068] [2020-09-25 13:35:36,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:35:36,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:36,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:35:36,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:36,133 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 13:35:37,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:37,981 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 13:35:37,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:35:37,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-09-25 13:35:37,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:37,987 INFO L225 Difference]: With dead ends: 698 [2020-09-25 13:35:37,988 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 13:35:37,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:35:37,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 13:35:38,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 13:35:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 13:35:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 13:35:38,031 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 116 [2020-09-25 13:35:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:38,032 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 13:35:38,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:35:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 13:35:38,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 13:35:38,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:38,039 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:35:38,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:38,039 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:38,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:38,040 INFO L82 PathProgramCache]: Analyzing trace with hash 804111666, now seen corresponding path program 1 times [2020-09-25 13:35:38,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:38,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440821290] [2020-09-25 13:35:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:40,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 13:35:40,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:35:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2830 [2020-09-25 13:35:40,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:40,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 13:35:40,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:40,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:40,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:40,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:35:40,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:40,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:40,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:40,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:40,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:41,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:41,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:41,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:41,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:41,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 13:35:41,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:41,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:41,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:41,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:41,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:41,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:41,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440821290] [2020-09-25 13:35:41,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:41,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:35:41,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149526495] [2020-09-25 13:35:41,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:41,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:41,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:41,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:41,259 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 8 states. [2020-09-25 13:35:44,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:44,699 INFO L93 Difference]: Finished difference Result 1653 states and 2185 transitions. [2020-09-25 13:35:44,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:44,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-09-25 13:35:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:44,719 INFO L225 Difference]: With dead ends: 1653 [2020-09-25 13:35:44,719 INFO L226 Difference]: Without dead ends: 1123 [2020-09-25 13:35:44,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:35:44,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-09-25 13:35:44,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 890. [2020-09-25 13:35:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-25 13:35:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1119 transitions. [2020-09-25 13:35:44,763 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1119 transitions. Word has length 126 [2020-09-25 13:35:44,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:44,764 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1119 transitions. [2020-09-25 13:35:44,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:44,764 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1119 transitions. [2020-09-25 13:35:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 13:35:44,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:44,771 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:44,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:44,772 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:44,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:44,772 INFO L82 PathProgramCache]: Analyzing trace with hash -844817794, now seen corresponding path program 1 times [2020-09-25 13:35:44,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:44,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382391986] [2020-09-25 13:35:44,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:44,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:45,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:45,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:48,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 13:35:48,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3478 [2020-09-25 13:35:48,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:48,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 13:35:48,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:48,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:48,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:48,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:48,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:35:48,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:48,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:48,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:48,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:48,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:48,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:48,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 13:35:48,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:48,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 13:35:48,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:48,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:48,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 13:35:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:48,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382391986] [2020-09-25 13:35:48,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:48,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:48,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845029992] [2020-09-25 13:35:48,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:48,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:48,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:48,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:48,685 INFO L87 Difference]: Start difference. First operand 890 states and 1119 transitions. Second operand 7 states. [2020-09-25 13:35:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:51,099 INFO L93 Difference]: Finished difference Result 2289 states and 3010 transitions. [2020-09-25 13:35:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:51,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-09-25 13:35:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:51,109 INFO L225 Difference]: With dead ends: 2289 [2020-09-25 13:35:51,109 INFO L226 Difference]: Without dead ends: 1414 [2020-09-25 13:35:51,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:35:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2020-09-25 13:35:51,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1196. [2020-09-25 13:35:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-25 13:35:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1446 transitions. [2020-09-25 13:35:51,163 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1446 transitions. Word has length 145 [2020-09-25 13:35:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:51,164 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1446 transitions. [2020-09-25 13:35:51,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1446 transitions. [2020-09-25 13:35:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 13:35:51,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:51,167 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:51,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:51,168 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1096000346, now seen corresponding path program 1 times [2020-09-25 13:35:51,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:51,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920783832] [2020-09-25 13:35:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:55,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:55,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 13:35:55,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:55,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4263 [2020-09-25 13:35:55,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:55,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 13:35:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:55,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:55,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:55,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:55,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:55,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:55,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:35:55,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:55,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:55,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:55,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:55,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:55,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:55,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 13:35:55,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:55,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 13:35:55,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:55,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:55,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:55,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:55,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 13:35:55,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:56,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920783832] [2020-09-25 13:35:56,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:56,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:35:56,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205799157] [2020-09-25 13:35:56,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:56,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:56,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:56,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:56,019 INFO L87 Difference]: Start difference. First operand 1196 states and 1446 transitions. Second operand 8 states. [2020-09-25 13:35:58,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:58,248 INFO L93 Difference]: Finished difference Result 2696 states and 3372 transitions. [2020-09-25 13:35:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:35:58,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 13:35:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:58,261 INFO L225 Difference]: With dead ends: 2696 [2020-09-25 13:35:58,262 INFO L226 Difference]: Without dead ends: 1678 [2020-09-25 13:35:58,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:35:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-09-25 13:35:58,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1668. [2020-09-25 13:35:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1668 states. [2020-09-25 13:35:58,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1997 transitions. [2020-09-25 13:35:58,328 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1997 transitions. Word has length 169 [2020-09-25 13:35:58,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:58,329 INFO L479 AbstractCegarLoop]: Abstraction has 1668 states and 1997 transitions. [2020-09-25 13:35:58,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1997 transitions. [2020-09-25 13:35:58,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 13:35:58,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:58,337 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-09-25 13:35:58,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:58,337 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:58,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1639632703, now seen corresponding path program 1 times [2020-09-25 13:35:58,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:58,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692871739] [2020-09-25 13:35:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:58,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:58,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 13:36:03,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:36:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:36:03,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:36:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:36:03,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:36:03,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:03,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:36:03,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:36:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:03,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:36:03,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 13:36:03,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:36:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:36:03,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:03,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:36:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:36:03,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:03,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 13:36:03,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:36:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 45 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:04,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692871739] [2020-09-25 13:36:04,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:04,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:36:04,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95899452] [2020-09-25 13:36:04,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:36:04,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:04,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:36:04,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:36:04,177 INFO L87 Difference]: Start difference. First operand 1668 states and 1997 transitions. Second operand 10 states. [2020-09-25 13:36:06,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:06,753 INFO L93 Difference]: Finished difference Result 3269 states and 4055 transitions. [2020-09-25 13:36:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:36:06,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2020-09-25 13:36:06,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:06,768 INFO L225 Difference]: With dead ends: 3269 [2020-09-25 13:36:06,769 INFO L226 Difference]: Without dead ends: 2251 [2020-09-25 13:36:06,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:36:06,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2020-09-25 13:36:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2200. [2020-09-25 13:36:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-25 13:36:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2628 transitions. [2020-09-25 13:36:06,853 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2628 transitions. Word has length 205 [2020-09-25 13:36:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:06,854 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 2628 transitions. [2020-09-25 13:36:06,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:36:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2628 transitions. [2020-09-25 13:36:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 13:36:06,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:06,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2020-09-25 13:36:06,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:36:06,858 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:06,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:06,859 INFO L82 PathProgramCache]: Analyzing trace with hash 785034117, now seen corresponding path program 1 times [2020-09-25 13:36:06,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:06,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059608453] [2020-09-25 13:36:06,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:07,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:07,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:07,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:10,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:11,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:11,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 13:36:11,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:36:11,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:36:11,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:11,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:36:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:36:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 13:36:11,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:12,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:12,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:12,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:12,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:12,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:36:12,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:12,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:36:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:12,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:36:12,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:12,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:12,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:12,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:36:12,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 13:36:12,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:12,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:36:12,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:36:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:12,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:12,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:12,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:12,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:36:12,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:36:12,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-25 13:36:12,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:12,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:12,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:12,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:12,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:36:12,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:12,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059608453] [2020-09-25 13:36:12,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:12,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:36:12,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934705790] [2020-09-25 13:36:12,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:36:12,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:12,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:36:12,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:36:12,718 INFO L87 Difference]: Start difference. First operand 2200 states and 2628 transitions. Second operand 10 states.