/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/Problem19_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:08:11,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:08:11,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:08:11,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:08:11,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:08:11,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:08:11,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:08:11,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:08:11,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:08:11,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:08:11,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:08:11,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:08:11,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:08:11,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:08:11,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:08:11,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:08:11,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:08:11,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:08:11,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:08:11,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:08:11,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:08:11,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:08:11,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:08:11,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:08:11,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:08:11,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:08:11,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:08:11,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:08:11,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:08:11,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:08:11,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:08:11,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:08:11,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:08:11,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:08:11,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:08:11,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:08:11,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:08:11,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:08:11,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:08:11,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:08:11,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:08:11,824 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 23:08:11,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:08:11,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:08:11,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:08:11,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:08:11,850 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:08:11,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:08:11,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:08:11,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:08:11,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:08:11,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:08:11,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:08:11,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:08:11,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:08:11,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:08:11,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:08:11,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:08:11,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:08:11,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:08:11,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:08:11,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:08:11,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:08:11,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:08:11,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:08:11,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:08:11,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:08:11,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:08:11,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:08:11,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:08:11,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:08:11,856 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 23:08:12,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:08:12,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:08:12,212 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:08:12,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:08:12,215 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:08:12,216 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label44.c [2020-10-14 23:08:12,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85f77f9fa/938bcbe214094652940ac066034afecf/FLAG89f938f56 [2020-10-14 23:08:13,448 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:08:13,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label44.c [2020-10-14 23:08:13,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85f77f9fa/938bcbe214094652940ac066034afecf/FLAG89f938f56 [2020-10-14 23:08:13,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85f77f9fa/938bcbe214094652940ac066034afecf [2020-10-14 23:08:13,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:08:13,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:08:13,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:08:13,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:08:13,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:08:13,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:13" (1/1) ... [2020-10-14 23:08:13,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13, skipping insertion in model container [2020-10-14 23:08:13,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:13" (1/1) ... [2020-10-14 23:08:13,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:08:13,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:08:16,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:08:16,287 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:08:17,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:08:17,471 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:08:17,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:17 WrapperNode [2020-10-14 23:08:17,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:08:17,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:08:17,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:08:17,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:08:17,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:17" (1/1) ... [2020-10-14 23:08:17,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:17" (1/1) ... [2020-10-14 23:08:17,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:17" (1/1) ... [2020-10-14 23:08:17,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:17" (1/1) ... [2020-10-14 23:08:17,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:17" (1/1) ... [2020-10-14 23:08:17,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:17" (1/1) ... [2020-10-14 23:08:17,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:17" (1/1) ... [2020-10-14 23:08:18,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:08:18,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:08:18,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:08:18,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:08:18,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:17" (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 23:08:18,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:08:18,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:08:18,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:08:18,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:08:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:08:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:08:18,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:08:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:08:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:08:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:08:18,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:08:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:08:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:08:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:08:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:08:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:08:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:08:18,193 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:08:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:08:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:08:18,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:08:32,287 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:08:32,288 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:08:32,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:32 BoogieIcfgContainer [2020-10-14 23:08:32,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:08:32,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:08:32,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:08:32,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:08:32,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:08:13" (1/3) ... [2020-10-14 23:08:32,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695d4002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:32, skipping insertion in model container [2020-10-14 23:08:32,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:17" (2/3) ... [2020-10-14 23:08:32,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@695d4002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:32, skipping insertion in model container [2020-10-14 23:08:32,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:32" (3/3) ... [2020-10-14 23:08:32,331 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label44.c [2020-10-14 23:08:32,345 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:08:32,362 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:08:32,380 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:08:32,417 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:08:32,417 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:08:32,417 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:08:32,417 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:08:32,417 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:08:32,417 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:08:32,418 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:08:32,418 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:08:32,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:08:32,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:08:32,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:08:32,486 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] [2020-10-14 23:08:32,487 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:08:32,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:08:32,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1535599542, now seen corresponding path program 1 times [2020-10-14 23:08:32,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:08:32,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264923956] [2020-10-14 23:08:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:08:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:32,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:33,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:33,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:08:33,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:33,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-14 23:08:33,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:33,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:08:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:08:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:08:33,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:08:33,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:08:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:33,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:33,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:08:33,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:08:33,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:08:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:08:33,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:08:33,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:08:33,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:08:33,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:08:33,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:08:33,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:08:33,443 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 23:08:33,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264923956] [2020-10-14 23:08:33,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:08:33,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:08:33,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865607356] [2020-10-14 23:08:33,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:08:33,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:08:33,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:08:33,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:08:33,486 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:08:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:08:58,538 INFO L93 Difference]: Finished difference Result 5086 states and 9561 transitions. [2020-10-14 23:08:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:08:58,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-14 23:08:58,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:08:58,659 INFO L225 Difference]: With dead ends: 5086 [2020-10-14 23:08:58,659 INFO L226 Difference]: Without dead ends: 3245 [2020-10-14 23:08:58,674 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 23:08:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2020-10-14 23:08:58,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3178. [2020-10-14 23:08:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3178 states. [2020-10-14 23:08:58,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 5849 transitions. [2020-10-14 23:08:58,943 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 5849 transitions. Word has length 40 [2020-10-14 23:08:58,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:08:58,945 INFO L479 AbstractCegarLoop]: Abstraction has 3178 states and 5849 transitions. [2020-10-14 23:08:58,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:08:58,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 5849 transitions. [2020-10-14 23:08:58,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 23:08:58,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:08:58,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:58,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:08:58,953 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:08:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:08:58,954 INFO L82 PathProgramCache]: Analyzing trace with hash 220681975, now seen corresponding path program 1 times [2020-10-14 23:08:58,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:08:58,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995720658] [2020-10-14 23:08:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:08:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:08:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:59,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:08:59,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:00,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:00,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 23:09:00,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:09:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1254 [2020-10-14 23:09:00,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:00,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:09:00,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:09:00,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:09:00,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 23:09:00,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:09:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:00,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:00,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:09:00,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:00,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:09:00,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:00,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:09:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:09:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:09:00,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:00,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:09:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:00,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:00,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:00,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:09:00,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:09:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 23:09:00,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:00,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:09:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:09:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:09:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:09:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:09:00,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995720658] [2020-10-14 23:09:00,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:09:00,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:09:00,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370704053] [2020-10-14 23:09:00,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:09:00,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:09:00,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:09:00,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:09:00,777 INFO L87 Difference]: Start difference. First operand 3178 states and 5849 transitions. Second operand 7 states. [2020-10-14 23:09:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:09:46,458 INFO L93 Difference]: Finished difference Result 8018 states and 14731 transitions. [2020-10-14 23:09:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:09:46,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-14 23:09:46,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:09:46,498 INFO L225 Difference]: With dead ends: 8018 [2020-10-14 23:09:46,498 INFO L226 Difference]: Without dead ends: 4846 [2020-10-14 23:09:46,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:09:46,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4846 states. [2020-10-14 23:09:46,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4846 to 4691. [2020-10-14 23:09:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4691 states. [2020-10-14 23:09:46,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 7645 transitions. [2020-10-14 23:09:46,720 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 7645 transitions. Word has length 111 [2020-10-14 23:09:46,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:09:46,722 INFO L479 AbstractCegarLoop]: Abstraction has 4691 states and 7645 transitions. [2020-10-14 23:09:46,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:09:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 7645 transitions. [2020-10-14 23:09:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 23:09:46,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:09:46,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:09:46,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:09:46,726 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:09:46,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:09:46,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1111553389, now seen corresponding path program 1 times [2020-10-14 23:09:46,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:09:46,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267489041] [2020-10-14 23:09:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:09:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:46,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:47,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:47,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:47,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 23:09:47,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:09:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1090 [2020-10-14 23:09:47,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:47,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:09:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:09:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:09:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:09:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:48,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:48,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:48,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:09:48,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:48,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:09:48,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:48,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:09:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:09:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:09:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:48,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:09:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:48,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:48,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:48,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 23:09:48,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 23:09:48,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:48,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:09:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:09:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 23:09:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:09:48,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267489041] [2020-10-14 23:09:48,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:09:48,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:09:48,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774867511] [2020-10-14 23:09:48,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:09:48,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:09:48,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:09:48,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:09:48,477 INFO L87 Difference]: Start difference. First operand 4691 states and 7645 transitions. Second operand 7 states. [2020-10-14 23:10:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:10:51,810 INFO L93 Difference]: Finished difference Result 14259 states and 23600 transitions. [2020-10-14 23:10:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:10:51,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-14 23:10:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:10:51,864 INFO L225 Difference]: With dead ends: 14259 [2020-10-14 23:10:51,864 INFO L226 Difference]: Without dead ends: 9574 [2020-10-14 23:10:51,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:10:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9574 states. [2020-10-14 23:10:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9574 to 9274. [2020-10-14 23:10:52,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9274 states. [2020-10-14 23:10:52,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9274 states to 9274 states and 13227 transitions. [2020-10-14 23:10:52,198 INFO L78 Accepts]: Start accepts. Automaton has 9274 states and 13227 transitions. Word has length 116 [2020-10-14 23:10:52,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:10:52,201 INFO L479 AbstractCegarLoop]: Abstraction has 9274 states and 13227 transitions. [2020-10-14 23:10:52,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:10:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 9274 states and 13227 transitions. [2020-10-14 23:10:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 23:10:52,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:10:52,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:52,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:10:52,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:10:52,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:10:52,217 INFO L82 PathProgramCache]: Analyzing trace with hash -891077477, now seen corresponding path program 1 times [2020-10-14 23:10:52,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:10:52,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51977244] [2020-10-14 23:10:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:10:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:52,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:52,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:54,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:54,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 23:10:54,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:10:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1899 [2020-10-14 23:10:54,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:54,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:10:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:10:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 23:10:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:10:54,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:10:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:54,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:54,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:54,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:10:54,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:10:54,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:54,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:10:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:10:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:10:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:10:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:10:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:54,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:54,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 23:10:54,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:10:54,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 23:10:54,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:54,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:10:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:10:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 23:10:54,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:10:54,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51977244] [2020-10-14 23:10:54,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:10:54,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:10:54,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530681419] [2020-10-14 23:10:54,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:10:54,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:10:54,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:10:54,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:10:54,561 INFO L87 Difference]: Start difference. First operand 9274 states and 13227 transitions. Second operand 7 states. [2020-10-14 23:12:09,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:12:09,854 INFO L93 Difference]: Finished difference Result 35773 states and 53178 transitions. [2020-10-14 23:12:09,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:12:09,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-14 23:12:09,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:12:09,961 INFO L225 Difference]: With dead ends: 35773 [2020-10-14 23:12:09,962 INFO L226 Difference]: Without dead ends: 26505 [2020-10-14 23:12:09,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:12:10,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26505 states. [2020-10-14 23:12:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26505 to 26488. [2020-10-14 23:12:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26488 states. [2020-10-14 23:12:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26488 states to 26488 states and 35109 transitions. [2020-10-14 23:12:10,893 INFO L78 Accepts]: Start accepts. Automaton has 26488 states and 35109 transitions. Word has length 126 [2020-10-14 23:12:10,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:12:10,893 INFO L479 AbstractCegarLoop]: Abstraction has 26488 states and 35109 transitions. [2020-10-14 23:12:10,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:12:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 26488 states and 35109 transitions. [2020-10-14 23:12:10,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-14 23:12:10,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:12:10,902 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, 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, 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] [2020-10-14 23:12:10,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:12:10,903 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:12:10,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:12:10,904 INFO L82 PathProgramCache]: Analyzing trace with hash -401181826, now seen corresponding path program 1 times [2020-10-14 23:12:10,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:12:10,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457106986] [2020-10-14 23:12:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:12:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:11,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:11,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:11,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:11,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:14,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:14,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-14 23:12:14,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:12:14,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3425 [2020-10-14 23:12:14,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:14,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:14,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:12:14,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 23:12:14,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 23:12:14,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:14,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:12:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:14,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:14,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:14,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:12:14,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:14,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:12:14,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:14,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:12:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:12:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:12:14,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:14,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:12:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:14,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:14,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:14,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 23:12:14,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:12:14,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 23:12:14,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:14,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:12:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:12:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 23:12:14,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:14,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 23:12:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:15,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:15,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 23:12:15,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:15,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 23:12:15,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:15,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:12:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:12:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 23:12:15,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:12:15,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457106986] [2020-10-14 23:12:15,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:12:15,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:12:15,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857354660] [2020-10-14 23:12:15,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:12:15,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:12:15,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:12:15,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:12:15,238 INFO L87 Difference]: Start difference. First operand 26488 states and 35109 transitions. Second operand 7 states.