/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:41:34,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:41:34,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:41:34,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:41:34,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:41:34,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:41:34,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:41:34,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:41:34,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:41:34,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:41:34,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:41:34,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:41:34,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:41:34,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:41:34,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:41:34,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:41:34,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:41:34,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:41:34,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:41:34,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:41:34,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:41:34,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:41:34,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:41:34,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:41:35,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:41:35,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:41:35,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:41:35,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:41:35,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:41:35,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:41:35,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:41:35,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:41:35,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:41:35,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:41:35,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:41:35,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:41:35,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:41:35,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:41:35,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:41:35,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:41:35,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:41:35,021 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 04:41:35,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:41:35,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:41:35,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:41:35,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:41:35,087 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:41:35,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:41:35,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:41:35,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:41:35,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:41:35,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:41:35,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:41:35,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:41:35,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:41:35,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:41:35,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:41:35,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:41:35,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:41:35,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:41:35,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:41:35,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:41:35,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:41:35,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:41:35,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:41:35,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:41:35,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:41:35,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:41:35,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:41:35,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:41:35,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:41:35,092 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:41:35,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:41:35,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:41:35,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:41:35,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:41:35,474 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:41:35,475 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label58.c [2020-10-14 04:41:35,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d310fb630/a0043b06b79a4cc194fca8a67b53a2e3/FLAGfedf1e488 [2020-10-14 04:41:36,716 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:41:36,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label58.c [2020-10-14 04:41:36,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d310fb630/a0043b06b79a4cc194fca8a67b53a2e3/FLAGfedf1e488 [2020-10-14 04:41:36,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d310fb630/a0043b06b79a4cc194fca8a67b53a2e3 [2020-10-14 04:41:37,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:41:37,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:41:37,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:41:37,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:41:37,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:41:37,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:41:36" (1/1) ... [2020-10-14 04:41:37,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47211fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:37, skipping insertion in model container [2020-10-14 04:41:37,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:41:36" (1/1) ... [2020-10-14 04:41:37,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:41:37,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:41:40,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:41:40,052 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:41:41,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:41:41,341 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:41:41,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:41 WrapperNode [2020-10-14 04:41:41,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:41:41,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:41:41,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:41:41,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:41:41,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:41" (1/1) ... [2020-10-14 04:41:41,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:41" (1/1) ... [2020-10-14 04:41:41,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:41" (1/1) ... [2020-10-14 04:41:41,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:41" (1/1) ... [2020-10-14 04:41:41,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:41" (1/1) ... [2020-10-14 04:41:41,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:41" (1/1) ... [2020-10-14 04:41:41,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:41" (1/1) ... [2020-10-14 04:41:42,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:41:42,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:41:42,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:41:42,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:41:42,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:41" (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 04:41:42,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:41:42,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:41:42,212 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:41:42,212 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:41:42,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:41:42,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:41:42,213 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:41:42,214 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:41:42,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:41:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:41:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:41:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:41:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:41:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:41:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:41:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:41:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:41:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:41:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:41:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:41:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:41:57,626 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:41:57,627 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:41:57,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:41:57 BoogieIcfgContainer [2020-10-14 04:41:57,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:41:57,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:41:57,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:41:57,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:41:57,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:41:36" (1/3) ... [2020-10-14 04:41:57,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae692aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:41:57, skipping insertion in model container [2020-10-14 04:41:57,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:41:41" (2/3) ... [2020-10-14 04:41:57,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae692aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:41:57, skipping insertion in model container [2020-10-14 04:41:57,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:41:57" (3/3) ... [2020-10-14 04:41:57,666 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label58.c [2020-10-14 04:41:57,681 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:41:57,694 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:41:57,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:41:57,763 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:41:57,763 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:41:57,764 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:41:57,764 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:41:57,764 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:41:57,764 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:41:57,764 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:41:57,764 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:41:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:41:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 04:41:57,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:41:57,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:41:57,839 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:41:57,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:41:57,849 INFO L82 PathProgramCache]: Analyzing trace with hash 2053208436, now seen corresponding path program 1 times [2020-10-14 04:41:57,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:41:57,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786771861] [2020-10-14 04:41:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:41:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:58,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:58,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 04:41:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-14 04:41:58,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:58,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:41:58,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:41:58,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 04:41:58,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 04:41:58,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:41:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:41:58,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:41:58,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:41:58,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:41:58,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:41:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:41:58,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:41:58,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:41:58,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:41:58,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:41:58,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:41:58,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:41:58,701 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 04:41:58,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786771861] [2020-10-14 04:41:58,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:41:58,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:41:58,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260687652] [2020-10-14 04:41:58,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:41:58,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:41:58,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:41:58,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:41:58,740 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:42:30,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:42:30,723 INFO L93 Difference]: Finished difference Result 5111 states and 9601 transitions. [2020-10-14 04:42:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:42:30,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 04:42:30,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:42:30,783 INFO L225 Difference]: With dead ends: 5111 [2020-10-14 04:42:30,783 INFO L226 Difference]: Without dead ends: 3270 [2020-10-14 04:42:30,799 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 04:42:30,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2020-10-14 04:42:31,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3199. [2020-10-14 04:42:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2020-10-14 04:42:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 5483 transitions. [2020-10-14 04:42:31,085 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 5483 transitions. Word has length 19 [2020-10-14 04:42:31,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:42:31,086 INFO L479 AbstractCegarLoop]: Abstraction has 3199 states and 5483 transitions. [2020-10-14 04:42:31,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:42:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 5483 transitions. [2020-10-14 04:42:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 04:42:31,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:42:31,094 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:42:31,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:42:31,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:42:31,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:42:31,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1938523064, now seen corresponding path program 1 times [2020-10-14 04:42:31,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:42:31,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252733795] [2020-10-14 04:42:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:42:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:31,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:33,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:33,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 04:42:33,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:42:33,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2039 [2020-10-14 04:42:33,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:33,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:42:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 04:42:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:42:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:42:33,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:42:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:33,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:33,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:33,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:42:33,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:33,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:42:33,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:33,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:33,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:42:33,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:33,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:42:33,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:33,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:42:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:42:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:42:33,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:42:33,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:42:33,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:42:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 04:42:33,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:42:33,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:42:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:42:33,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:42:33,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 04:42:33,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:42:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:42:33,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252733795] [2020-10-14 04:42:33,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:42:33,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:42:33,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326522346] [2020-10-14 04:42:33,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:42:33,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:42:33,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:42:33,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:42:33,711 INFO L87 Difference]: Start difference. First operand 3199 states and 5483 transitions. Second operand 5 states. [2020-10-14 04:43:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:43:19,692 INFO L93 Difference]: Finished difference Result 7886 states and 13848 transitions. [2020-10-14 04:43:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:43:19,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 04:43:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:43:19,727 INFO L225 Difference]: With dead ends: 7886 [2020-10-14 04:43:19,727 INFO L226 Difference]: Without dead ends: 4693 [2020-10-14 04:43:19,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:43:19,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2020-10-14 04:43:19,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 4645. [2020-10-14 04:43:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4645 states. [2020-10-14 04:43:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 7460 transitions. [2020-10-14 04:43:19,888 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 7460 transitions. Word has length 91 [2020-10-14 04:43:19,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:43:19,889 INFO L479 AbstractCegarLoop]: Abstraction has 4645 states and 7460 transitions. [2020-10-14 04:43:19,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:43:19,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 7460 transitions. [2020-10-14 04:43:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 04:43:19,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:43:19,892 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:43:19,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:43:19,893 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:43:19,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:43:19,894 INFO L82 PathProgramCache]: Analyzing trace with hash 474819742, now seen corresponding path program 1 times [2020-10-14 04:43:19,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:43:19,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458407283] [2020-10-14 04:43:19,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:43:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:20,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:20,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:20,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 04:43:20,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:43:20,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-14 04:43:20,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:20,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:43:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 04:43:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:43:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:21,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:43:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:21,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:21,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:43:21,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:21,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:43:21,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:21,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:43:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:43:21,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:21,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:43:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:43:21,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:43:21,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:43:21,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:43:21,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:43:21,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 04:43:21,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:43:21,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:43:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:43:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:43:21,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:43:21,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:43:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:43:21,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458407283] [2020-10-14 04:43:21,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:43:21,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:43:21,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540056645] [2020-10-14 04:43:21,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:43:21,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:43:21,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:43:21,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:43:21,335 INFO L87 Difference]: Start difference. First operand 4645 states and 7460 transitions. Second operand 5 states. [2020-10-14 04:44:00,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:44:00,011 INFO L93 Difference]: Finished difference Result 13548 states and 22072 transitions. [2020-10-14 04:44:00,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:44:00,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-14 04:44:00,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:44:00,057 INFO L225 Difference]: With dead ends: 13548 [2020-10-14 04:44:00,058 INFO L226 Difference]: Without dead ends: 8909 [2020-10-14 04:44:00,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:44:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8909 states. [2020-10-14 04:44:00,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8909 to 8889. [2020-10-14 04:44:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8889 states. [2020-10-14 04:44:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8889 states to 8889 states and 12894 transitions. [2020-10-14 04:44:00,276 INFO L78 Accepts]: Start accepts. Automaton has 8889 states and 12894 transitions. Word has length 94 [2020-10-14 04:44:00,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:44:00,277 INFO L479 AbstractCegarLoop]: Abstraction has 8889 states and 12894 transitions. [2020-10-14 04:44:00,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:44:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 8889 states and 12894 transitions. [2020-10-14 04:44:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 04:44:00,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:44:00,280 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:44:00,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:44:00,281 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:44:00,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:44:00,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2028933380, now seen corresponding path program 1 times [2020-10-14 04:44:00,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:44:00,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999444300] [2020-10-14 04:44:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:44:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:01,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:01,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:44:01,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:44:01,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 941 [2020-10-14 04:44:01,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:01,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:44:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 04:44:01,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:44:01,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:01,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:44:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:01,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:01,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:01,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:44:01,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:44:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:44:01,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:01,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:01,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:44:01,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:44:01,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:44:01,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:01,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:44:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:01,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:01,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 04:44:01,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:44:01,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 04:44:01,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:01,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:44:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:44:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 04:44:01,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:44:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:44:01,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999444300] [2020-10-14 04:44:01,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:44:01,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:44:01,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030084917] [2020-10-14 04:44:01,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:44:01,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:44:01,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:44:01,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:44:01,624 INFO L87 Difference]: Start difference. First operand 8889 states and 12894 transitions. Second operand 6 states. [2020-10-14 04:44:52,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:44:52,523 INFO L93 Difference]: Finished difference Result 20688 states and 30853 transitions. [2020-10-14 04:44:52,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:44:52,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-14 04:44:52,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:44:52,569 INFO L225 Difference]: With dead ends: 20688 [2020-10-14 04:44:52,570 INFO L226 Difference]: Without dead ends: 11805 [2020-10-14 04:44:52,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:44:52,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11805 states. [2020-10-14 04:44:52,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11805 to 11704. [2020-10-14 04:44:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11704 states. [2020-10-14 04:44:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11704 states to 11704 states and 17399 transitions. [2020-10-14 04:44:52,843 INFO L78 Accepts]: Start accepts. Automaton has 11704 states and 17399 transitions. Word has length 118 [2020-10-14 04:44:52,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:44:52,844 INFO L479 AbstractCegarLoop]: Abstraction has 11704 states and 17399 transitions. [2020-10-14 04:44:52,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:44:52,845 INFO L276 IsEmpty]: Start isEmpty. Operand 11704 states and 17399 transitions. [2020-10-14 04:44:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 04:44:52,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:44:52,850 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:44:52,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:44:52,854 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:44:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:44:52,855 INFO L82 PathProgramCache]: Analyzing trace with hash -513337812, now seen corresponding path program 1 times [2020-10-14 04:44:52,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:44:52,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472953369] [2020-10-14 04:44:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:44:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:52,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:53,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:53,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:53,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 04:44:53,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:44:53,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-14 04:44:53,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:53,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:53,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:44:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 04:44:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:44:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:44:53,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:44:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:53,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:53,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:44:53,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:44:53,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:44:53,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:53,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:53,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:44:53,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:44:53,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:44:53,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:53,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:44:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:44:53,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:44:53,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:44:53,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 04:44:53,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:44:53,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 04:44:53,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:44:53,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:44:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:44:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-14 04:44:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:44:53,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:44:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:44:53,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472953369] [2020-10-14 04:44:53,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:44:53,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:44:53,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486913414] [2020-10-14 04:44:53,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:44:53,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:44:53,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:44:53,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:44:53,954 INFO L87 Difference]: Start difference. First operand 11704 states and 17399 transitions. Second operand 5 states. [2020-10-14 04:45:35,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:45:35,412 INFO L93 Difference]: Finished difference Result 34699 states and 52822 transitions. [2020-10-14 04:45:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:45:35,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 04:45:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:45:35,485 INFO L225 Difference]: With dead ends: 34699 [2020-10-14 04:45:35,485 INFO L226 Difference]: Without dead ends: 23001 [2020-10-14 04:45:35,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:45:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23001 states. [2020-10-14 04:45:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23001 to 22976. [2020-10-14 04:45:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22976 states. [2020-10-14 04:45:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22976 states to 22976 states and 33938 transitions. [2020-10-14 04:45:35,999 INFO L78 Accepts]: Start accepts. Automaton has 22976 states and 33938 transitions. Word has length 142 [2020-10-14 04:45:35,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:45:36,000 INFO L479 AbstractCegarLoop]: Abstraction has 22976 states and 33938 transitions. [2020-10-14 04:45:36,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:45:36,000 INFO L276 IsEmpty]: Start isEmpty. Operand 22976 states and 33938 transitions. [2020-10-14 04:45:36,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 04:45:36,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:45:36,009 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:36,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:45:36,010 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:45:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:45:36,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1656390924, now seen corresponding path program 1 times [2020-10-14 04:45:36,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:45:36,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440379820] [2020-10-14 04:45:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:45:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:45:36,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:45:36,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:45:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:45:37,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:45:37,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:45:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking...