/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:30:05,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:30:05,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:30:05,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:30:05,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:30:05,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:30:05,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:30:05,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:30:05,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:30:05,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:30:05,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:30:05,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:30:05,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:30:05,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:30:05,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:30:05,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:30:05,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:30:05,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:30:05,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:30:05,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:30:05,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:30:05,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:30:05,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:30:05,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:30:05,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:30:05,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:30:05,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:30:05,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:30:05,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:30:05,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:30:05,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:30:05,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:30:05,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:30:05,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:30:05,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:30:05,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:30:05,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:30:05,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:30:05,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:30:05,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:30:05,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:30:05,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:30:05,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:30:05,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:30:05,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:30:05,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:30:05,710 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:30:05,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:30:05,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:30:05,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:30:05,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:30:05,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:30:05,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:30:05,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:30:05,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:30:05,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:30:05,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:30:05,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:30:05,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:30:05,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:30:05,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:30:05,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:30:05,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:30:05,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:30:05,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:30:05,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:30:05,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:30:05,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:30:05,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:30:05,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:30:05,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:30:05,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:30:06,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:30:06,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:30:06,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:30:06,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:30:06,100 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:30:06,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33.c [2020-10-14 21:30:06,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7addb95be/c31bc86c3efa4692ba54d0122298259b/FLAG1717a9983 [2020-10-14 21:30:07,233 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:30:07,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label33.c [2020-10-14 21:30:07,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7addb95be/c31bc86c3efa4692ba54d0122298259b/FLAG1717a9983 [2020-10-14 21:30:07,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7addb95be/c31bc86c3efa4692ba54d0122298259b [2020-10-14 21:30:07,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:30:07,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:30:07,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:30:07,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:30:07,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:30:07,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:30:07" (1/1) ... [2020-10-14 21:30:07,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ec4e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:07, skipping insertion in model container [2020-10-14 21:30:07,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:30:07" (1/1) ... [2020-10-14 21:30:07,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:30:07,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:30:09,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:30:09,940 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:30:10,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:30:10,795 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:30:10,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:10 WrapperNode [2020-10-14 21:30:10,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:30:10,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:30:10,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:30:10,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:30:10,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:10" (1/1) ... [2020-10-14 21:30:10,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:10" (1/1) ... [2020-10-14 21:30:10,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:10" (1/1) ... [2020-10-14 21:30:10,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:10" (1/1) ... [2020-10-14 21:30:11,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:10" (1/1) ... [2020-10-14 21:30:11,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:10" (1/1) ... [2020-10-14 21:30:11,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:10" (1/1) ... [2020-10-14 21:30:11,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:30:11,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:30:11,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:30:11,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:30:11,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:30:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:30:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:30:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:30:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:30:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:30:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:30:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:30:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:30:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:30:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:30:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:30:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:30:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:30:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:30:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:30:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:30:11,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:30:23,723 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:30:23,723 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:30:23,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:30:23 BoogieIcfgContainer [2020-10-14 21:30:23,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:30:23,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:30:23,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:30:23,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:30:23,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:30:07" (1/3) ... [2020-10-14 21:30:23,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7b9708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:30:23, skipping insertion in model container [2020-10-14 21:30:23,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:10" (2/3) ... [2020-10-14 21:30:23,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7b9708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:30:23, skipping insertion in model container [2020-10-14 21:30:23,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:30:23" (3/3) ... [2020-10-14 21:30:23,756 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label33.c [2020-10-14 21:30:23,768 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:30:23,779 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:30:23,795 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:30:23,830 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:30:23,830 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:30:23,830 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:30:23,830 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:30:23,831 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:30:23,831 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:30:23,831 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:30:23,831 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:30:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:30:23,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 21:30:23,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:23,886 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] [2020-10-14 21:30:23,887 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:23,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:23,895 INFO L82 PathProgramCache]: Analyzing trace with hash 966889472, now seen corresponding path program 1 times [2020-10-14 21:30:23,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:23,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903097368] [2020-10-14 21:30:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:24,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:24,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 21:30:24,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:24,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-14 21:30:24,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:24,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:30:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:30:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 21:30:24,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:30:24,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:24,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:24,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:24,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:24,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 21:30:24,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:24,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:24,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:30:24,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:30:24,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903097368] [2020-10-14 21:30:24,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:30:24,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:30:24,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267894861] [2020-10-14 21:30:24,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:30:24,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:24,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:30:24,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:30:24,861 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:30:43,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:43,354 INFO L93 Difference]: Finished difference Result 3204 states and 5913 transitions. [2020-10-14 21:30:43,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:30:43,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 21:30:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:43,407 INFO L225 Difference]: With dead ends: 3204 [2020-10-14 21:30:43,407 INFO L226 Difference]: Without dead ends: 2006 [2020-10-14 21:30:43,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:30:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2020-10-14 21:30:43,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1920. [2020-10-14 21:30:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-14 21:30:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3311 transitions. [2020-10-14 21:30:43,627 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3311 transitions. Word has length 41 [2020-10-14 21:30:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:43,629 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 3311 transitions. [2020-10-14 21:30:43,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:30:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3311 transitions. [2020-10-14 21:30:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 21:30:43,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:43,641 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, 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] [2020-10-14 21:30:43,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:30:43,644 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:43,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:43,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1658513383, now seen corresponding path program 1 times [2020-10-14 21:30:43,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:43,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450380615] [2020-10-14 21:30:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:43,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:44,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:45,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:45,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 21:30:45,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:30:45,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1857 [2020-10-14 21:30:45,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:45,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:30:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:30:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:30:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-14 21:30:45,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:45,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:45,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:45,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:45,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:30:45,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:45,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:30:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:30:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:30:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:45,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:45,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:30:45,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:45,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 21:30:45,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:45,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:45,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:30:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:30:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:30:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:30:46,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450380615] [2020-10-14 21:30:46,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:30:46,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:30:46,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163470529] [2020-10-14 21:30:46,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:30:46,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:46,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:30:46,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:30:46,052 INFO L87 Difference]: Start difference. First operand 1920 states and 3311 transitions. Second operand 7 states. [2020-10-14 21:31:08,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:08,335 INFO L93 Difference]: Finished difference Result 5590 states and 9738 transitions. [2020-10-14 21:31:08,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:31:08,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-14 21:31:08,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:08,366 INFO L225 Difference]: With dead ends: 5590 [2020-10-14 21:31:08,367 INFO L226 Difference]: Without dead ends: 3676 [2020-10-14 21:31:08,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:31:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2020-10-14 21:31:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3634. [2020-10-14 21:31:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3634 states. [2020-10-14 21:31:08,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5503 transitions. [2020-10-14 21:31:08,520 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5503 transitions. Word has length 110 [2020-10-14 21:31:08,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:08,523 INFO L479 AbstractCegarLoop]: Abstraction has 3634 states and 5503 transitions. [2020-10-14 21:31:08,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:31:08,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5503 transitions. [2020-10-14 21:31:08,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 21:31:08,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:08,530 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, 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] [2020-10-14 21:31:08,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:31:08,531 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:08,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1434785027, now seen corresponding path program 1 times [2020-10-14 21:31:08,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:08,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948127438] [2020-10-14 21:31:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:09,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:09,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:31:09,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:31:09,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-14 21:31:09,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:09,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:31:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:09,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:31:09,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:09,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:09,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:09,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:09,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 21:31:09,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:09,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:09,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:09,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:09,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 21:31:09,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:09,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 21:31:09,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:09,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:31:09,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:31:09,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:31:09,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948127438] [2020-10-14 21:31:09,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:31:09,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:31:09,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869484613] [2020-10-14 21:31:09,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:31:09,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:09,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:31:09,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:31:09,698 INFO L87 Difference]: Start difference. First operand 3634 states and 5503 transitions. Second operand 7 states. [2020-10-14 21:31:34,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:34,283 INFO L93 Difference]: Finished difference Result 10962 states and 17061 transitions. [2020-10-14 21:31:34,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:31:34,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-14 21:31:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:34,329 INFO L225 Difference]: With dead ends: 10962 [2020-10-14 21:31:34,329 INFO L226 Difference]: Without dead ends: 7334 [2020-10-14 21:31:34,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:31:34,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7334 states. [2020-10-14 21:31:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7334 to 7168. [2020-10-14 21:31:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7168 states. [2020-10-14 21:31:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7168 states to 7168 states and 10028 transitions. [2020-10-14 21:31:34,614 INFO L78 Accepts]: Start accepts. Automaton has 7168 states and 10028 transitions. Word has length 112 [2020-10-14 21:31:34,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:34,622 INFO L479 AbstractCegarLoop]: Abstraction has 7168 states and 10028 transitions. [2020-10-14 21:31:34,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:31:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 7168 states and 10028 transitions. [2020-10-14 21:31:34,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 21:31:34,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:34,635 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, 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] [2020-10-14 21:31:34,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:31:34,635 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:34,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:34,636 INFO L82 PathProgramCache]: Analyzing trace with hash 355921257, now seen corresponding path program 1 times [2020-10-14 21:31:34,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:34,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895416724] [2020-10-14 21:31:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:35,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:35,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 21:31:35,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:31:35,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1209 [2020-10-14 21:31:35,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:35,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:31:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 21:31:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:36,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:36,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:36,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:36,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:36,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:31:36,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:36,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:36,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:36,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:36,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:36,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:36,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:31:36,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:31:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 21:31:36,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:36,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:31:36,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:31:36,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895416724] [2020-10-14 21:31:36,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:31:36,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:31:36,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683590007] [2020-10-14 21:31:36,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:31:36,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:36,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:31:36,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:31:36,383 INFO L87 Difference]: Start difference. First operand 7168 states and 10028 transitions. Second operand 7 states. [2020-10-14 21:32:11,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:32:11,764 INFO L93 Difference]: Finished difference Result 34338 states and 52262 transitions. [2020-10-14 21:32:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:32:11,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-14 21:32:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:32:11,913 INFO L225 Difference]: With dead ends: 34338 [2020-10-14 21:32:11,913 INFO L226 Difference]: Without dead ends: 27176 [2020-10-14 21:32:11,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:32:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27176 states. [2020-10-14 21:32:12,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27176 to 26295. [2020-10-14 21:32:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26295 states. [2020-10-14 21:32:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26295 states to 26295 states and 37160 transitions. [2020-10-14 21:32:12,848 INFO L78 Accepts]: Start accepts. Automaton has 26295 states and 37160 transitions. Word has length 118 [2020-10-14 21:32:12,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:32:12,849 INFO L479 AbstractCegarLoop]: Abstraction has 26295 states and 37160 transitions. [2020-10-14 21:32:12,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:32:12,849 INFO L276 IsEmpty]: Start isEmpty. Operand 26295 states and 37160 transitions. [2020-10-14 21:32:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 21:32:12,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:32:12,861 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, 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, 1, 1, 1, 1, 1, 1] [2020-10-14 21:32:12,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:32:12,862 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:32:12,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:32:12,863 INFO L82 PathProgramCache]: Analyzing trace with hash 276658260, now seen corresponding path program 1 times [2020-10-14 21:32:12,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:32:12,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281451774] [2020-10-14 21:32:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:32:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:13,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:14,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:16,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:18,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:18,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 21:32:18,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:32:18,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 21:32:18,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:18,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:32:18,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:32:18,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:32:18,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:32:18,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:32:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:18,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:18,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:18,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:32:18,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:18,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:32:18,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:18,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:18,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:18,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:18,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:32:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:18,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:32:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:18,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:18,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:18,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:18,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:32:18,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:32:18,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 21:32:18,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:18,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:18,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:32:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:32:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:32:18,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:18,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-14 21:32:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:18,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:18,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:18,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:32:18,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:18,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 21:32:18,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:18,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:18,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:32:18,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 21:32:18,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:32:18,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 68 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:32:18,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281451774] [2020-10-14 21:32:18,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:32:18,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:32:18,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812553037] [2020-10-14 21:32:18,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:32:18,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:32:18,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:32:18,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:32:18,778 INFO L87 Difference]: Start difference. First operand 26295 states and 37160 transitions. Second operand 7 states. [2020-10-14 21:32:41,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:32:41,062 INFO L93 Difference]: Finished difference Result 63754 states and 90445 transitions. [2020-10-14 21:32:41,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:32:41,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-14 21:32:41,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:32:41,240 INFO L225 Difference]: With dead ends: 63754 [2020-10-14 21:32:41,240 INFO L226 Difference]: Without dead ends: 37465 [2020-10-14 21:32:41,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:32:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37465 states. [2020-10-14 21:32:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37465 to 37359. [2020-10-14 21:32:42,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37359 states. [2020-10-14 21:32:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37359 states to 37359 states and 51099 transitions. [2020-10-14 21:32:42,363 INFO L78 Accepts]: Start accepts. Automaton has 37359 states and 51099 transitions. Word has length 250 [2020-10-14 21:32:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:32:42,366 INFO L479 AbstractCegarLoop]: Abstraction has 37359 states and 51099 transitions. [2020-10-14 21:32:42,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:32:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 37359 states and 51099 transitions. [2020-10-14 21:32:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 21:32:42,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:32:42,377 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:32:42,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:32:42,377 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:32:42,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:32:42,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1573881986, now seen corresponding path program 1 times [2020-10-14 21:32:42,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:32:42,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380118737] [2020-10-14 21:32:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:32:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:42,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:47,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:47,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 21:32:47,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:32:47,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 21:32:47,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:47,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:32:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:32:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 21:32:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:47,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:32:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:47,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:47,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:47,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:32:47,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:47,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:32:47,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:47,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:47,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:32:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:32:47,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:47,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:32:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:47,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:47,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:32:47,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 21:32:47,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:47,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:47,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:47,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:32:47,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:47,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:32:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:47,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:48,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:48,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 21:32:48,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:32:48,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-14 21:32:48,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:48,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:48,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:32:48,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:32:48,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 21:32:48,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:32:48,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380118737] [2020-10-14 21:32:48,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:32:48,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:32:48,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183828452] [2020-10-14 21:32:48,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:32:48,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:32:48,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:32:48,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:32:48,376 INFO L87 Difference]: Start difference. First operand 37359 states and 51099 transitions. Second operand 7 states. [2020-10-14 21:33:23,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:33:23,443 INFO L93 Difference]: Finished difference Result 90996 states and 129371 transitions. [2020-10-14 21:33:23,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:33:23,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-14 21:33:23,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:33:23,645 INFO L225 Difference]: With dead ends: 90996 [2020-10-14 21:33:23,645 INFO L226 Difference]: Without dead ends: 54446 [2020-10-14 21:33:23,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:33:23,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54446 states. [2020-10-14 21:33:24,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54446 to 54282. [2020-10-14 21:33:24,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54282 states. [2020-10-14 21:33:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54282 states to 54282 states and 76032 transitions. [2020-10-14 21:33:24,954 INFO L78 Accepts]: Start accepts. Automaton has 54282 states and 76032 transitions. Word has length 269 [2020-10-14 21:33:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:33:24,956 INFO L479 AbstractCegarLoop]: Abstraction has 54282 states and 76032 transitions. [2020-10-14 21:33:24,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:33:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 54282 states and 76032 transitions. [2020-10-14 21:33:24,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-14 21:33:24,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:33:24,969 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:33:24,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:33:24,969 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:33:24,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:33:24,970 INFO L82 PathProgramCache]: Analyzing trace with hash 130869399, now seen corresponding path program 1 times [2020-10-14 21:33:24,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:33:24,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670809874] [2020-10-14 21:33:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:33:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:25,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:27,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:30,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:30,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-14 21:33:30,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:33:30,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 21:33:30,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:30,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:33:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:33:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-14 21:33:30,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:30,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:33:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:30,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:30,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:33:30,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:30,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:33:30,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:30,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:30,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:33:30,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:30,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:33:30,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:30,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:33:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:30,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:30,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:30,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:33:30,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:30,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 21:33:30,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:30,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:30,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:33:30,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:30,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:33:30,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:33:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:33:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:30,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:30,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:30,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 21:33:30,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:30,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-14 21:33:30,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:30,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:33:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:33:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:33:30,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:33:31,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670809874] [2020-10-14 21:33:31,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:33:31,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:33:31,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101935149] [2020-10-14 21:33:31,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:33:31,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:33:31,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:33:31,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:33:31,229 INFO L87 Difference]: Start difference. First operand 54282 states and 76032 transitions. Second operand 7 states.