/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=BIGGEST --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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:04:35,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:04:35,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:04:35,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:04:35,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:04:35,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:04:35,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:04:35,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:04:35,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:04:35,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:04:35,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:04:35,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:04:35,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:04:35,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:04:35,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:04:35,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:04:35,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:04:35,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:04:35,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:04:35,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:04:35,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:04:35,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:04:35,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:04:35,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:04:35,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:04:35,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:04:35,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:04:35,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:04:35,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:04:35,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:04:35,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:04:35,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:04:35,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:04:35,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:04:35,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:04:35,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:04:35,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:04:35,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:04:35,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:04:35,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:04:35,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:04:35,948 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 [2020-10-12 20:04:35,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:04:35,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:04:35,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:04:35,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:04:35,986 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:04:35,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:04:35,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:04:35,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:04:35,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:04:35,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:04:35,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:04:35,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:04:35,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:04:35,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:04:35,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:04:35,989 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:04:35,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:04:35,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:04:35,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:04:35,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:04:35,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:04:35,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:04:35,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:04:35,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:04:35,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:04:35,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:04:35,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:04:35,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:04:35,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:04:35,991 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:04:36,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:04:36,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:04:36,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:04:36,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:04:36,333 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:04:36,333 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 20:04:36,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfadbeb6a/29a294e833fb43c2914e717e6bb65eb2/FLAG200b28ead [2020-10-12 20:04:37,127 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:04:37,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 20:04:37,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfadbeb6a/29a294e833fb43c2914e717e6bb65eb2/FLAG200b28ead [2020-10-12 20:04:37,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfadbeb6a/29a294e833fb43c2914e717e6bb65eb2 [2020-10-12 20:04:37,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:04:37,223 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:04:37,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:04:37,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:04:37,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:04:37,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:04:37" (1/1) ... [2020-10-12 20:04:37,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16febf07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:37, skipping insertion in model container [2020-10-12 20:04:37,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:04:37" (1/1) ... [2020-10-12 20:04:37,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:04:37,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:04:39,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:04:39,429 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:04:40,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:04:40,435 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:04:40,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:40 WrapperNode [2020-10-12 20:04:40,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:04:40,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:04:40,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:04:40,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:04:40,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:40" (1/1) ... [2020-10-12 20:04:40,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:40" (1/1) ... [2020-10-12 20:04:40,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:40" (1/1) ... [2020-10-12 20:04:40,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:40" (1/1) ... [2020-10-12 20:04:40,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:40" (1/1) ... [2020-10-12 20:04:40,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:40" (1/1) ... [2020-10-12 20:04:40,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:40" (1/1) ... [2020-10-12 20:04:40,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:04:40,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:04:40,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:04:40,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:04:40,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:40" (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 [2020-10-12 20:04:41,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:04:41,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:04:41,002 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:04:41,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:04:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:04:41,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:04:41,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:04:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:04:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:04:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:04:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:04:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:04:41,005 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:04:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:04:41,006 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:04:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:04:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:04:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:04:41,007 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:04:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:04:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:04:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:04:49,533 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:04:49,533 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:04:49,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:04:49 BoogieIcfgContainer [2020-10-12 20:04:49,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:04:49,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:04:49,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:04:49,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:04:49,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:04:37" (1/3) ... [2020-10-12 20:04:49,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9f84ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:04:49, skipping insertion in model container [2020-10-12 20:04:49,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:40" (2/3) ... [2020-10-12 20:04:49,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9f84ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:04:49, skipping insertion in model container [2020-10-12 20:04:49,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:04:49" (3/3) ... [2020-10-12 20:04:49,564 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 20:04:49,573 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:04:49,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-10-12 20:04:49,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-10-12 20:04:49,634 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:04:49,634 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:04:49,634 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:04:49,634 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:04:49,634 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:04:49,635 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:04:49,635 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:04:49,635 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:04:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states. [2020-10-12 20:04:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:04:49,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:04:49,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:04:49,731 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:04:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:04:49,738 INFO L82 PathProgramCache]: Analyzing trace with hash -556660971, now seen corresponding path program 1 times [2020-10-12 20:04:49,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:04:49,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345149280] [2020-10-12 20:04:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:04:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:50,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:51,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:52,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:54,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:54,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:55,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:55,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:55,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:04:55,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:04:55,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 20:04:55,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 20:04:55,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:04:55,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 20:04:55,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:04:58,460 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-12 20:04:58,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:04:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:58,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:04:58,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:04:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 20:04:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:04:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:04:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:04:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:04:58,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345149280] [2020-10-12 20:04:58,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:04:58,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 20:04:58,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141584597] [2020-10-12 20:04:58,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:04:58,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:04:58,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:04:58,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:04:58,623 INFO L87 Difference]: Start difference. First operand 3537 states. Second operand 12 states. [2020-10-12 20:05:01,647 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification that was a NOOP. DAG size: 746 [2020-10-12 20:05:45,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:45,261 INFO L93 Difference]: Finished difference Result 10162 states and 17693 transitions. [2020-10-12 20:05:45,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 20:05:45,269 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-12 20:05:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:45,334 INFO L225 Difference]: With dead ends: 10162 [2020-10-12 20:05:45,335 INFO L226 Difference]: Without dead ends: 6702 [2020-10-12 20:05:45,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2020-10-12 20:05:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6702 states. [2020-10-12 20:05:45,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6702 to 5844. [2020-10-12 20:05:45,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5844 states. [2020-10-12 20:05:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 7825 transitions. [2020-10-12 20:05:45,691 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 7825 transitions. Word has length 68 [2020-10-12 20:05:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:45,692 INFO L479 AbstractCegarLoop]: Abstraction has 5844 states and 7825 transitions. [2020-10-12 20:05:45,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:05:45,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 7825 transitions. [2020-10-12 20:05:45,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 20:05:45,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:45,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:45,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:05:45,704 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:45,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:45,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1406477790, now seen corresponding path program 1 times [2020-10-12 20:05:45,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:45,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388623280] [2020-10-12 20:05:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:45,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:45,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:46,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:46,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:50,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:50,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 20:05:50,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:05:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-12 20:05:50,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:05:50,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:05:50,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:05:50,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:54,079 WARN L193 SmtUtils]: Spent 2.81 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-12 20:05:54,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:54,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:54,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:54,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:54,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 20:05:54,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:54,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:05:54,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:54,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:05:54,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:05:54,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388623280] [2020-10-12 20:05:54,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:54,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:05:54,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044765928] [2020-10-12 20:05:54,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:05:54,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:54,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:05:54,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:05:54,268 INFO L87 Difference]: Start difference. First operand 5844 states and 7825 transitions. Second operand 11 states. [2020-10-12 20:05:59,922 WARN L193 SmtUtils]: Spent 5.44 s on a formula simplification. DAG size of input: 760 DAG size of output: 754 [2020-10-12 20:06:35,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:35,391 INFO L93 Difference]: Finished difference Result 9825 states and 13914 transitions. [2020-10-12 20:06:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 20:06:35,396 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-12 20:06:35,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:35,439 INFO L225 Difference]: With dead ends: 9825 [2020-10-12 20:06:35,439 INFO L226 Difference]: Without dead ends: 9085 [2020-10-12 20:06:35,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-10-12 20:06:35,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9085 states. [2020-10-12 20:06:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9085 to 5833. [2020-10-12 20:06:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5833 states. [2020-10-12 20:06:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5833 states to 5833 states and 7809 transitions. [2020-10-12 20:06:35,828 INFO L78 Accepts]: Start accepts. Automaton has 5833 states and 7809 transitions. Word has length 68 [2020-10-12 20:06:35,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:35,829 INFO L479 AbstractCegarLoop]: Abstraction has 5833 states and 7809 transitions. [2020-10-12 20:06:35,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:06:35,830 INFO L276 IsEmpty]: Start isEmpty. Operand 5833 states and 7809 transitions. [2020-10-12 20:06:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:06:35,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:35,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:35,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:06:35,844 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:35,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:35,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1269419232, now seen corresponding path program 1 times [2020-10-12 20:06:35,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:35,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464623931] [2020-10-12 20:06:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:36,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:37,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:39,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:40,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:40,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:40,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:06:40,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:06:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-12 20:06:40,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 20:06:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:06:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 20:06:40,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:44,448 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-12 20:06:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:44,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:44,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:44,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:44,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:44,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 20:06:44,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:44,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:44,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:44,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:44,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464623931] [2020-10-12 20:06:44,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:44,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 20:06:44,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283502281] [2020-10-12 20:06:44,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 20:06:44,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:44,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 20:06:44,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:06:44,556 INFO L87 Difference]: Start difference. First operand 5833 states and 7809 transitions. Second operand 13 states. [2020-10-12 20:06:47,421 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 749 [2020-10-12 20:07:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:10,323 INFO L93 Difference]: Finished difference Result 12579 states and 17994 transitions. [2020-10-12 20:07:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 20:07:10,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-12 20:07:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:10,363 INFO L225 Difference]: With dead ends: 12579 [2020-10-12 20:07:10,363 INFO L226 Difference]: Without dead ends: 9998 [2020-10-12 20:07:10,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2020-10-12 20:07:10,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9998 states. [2020-10-12 20:07:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9998 to 6729. [2020-10-12 20:07:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6729 states. [2020-10-12 20:07:10,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6729 states to 6729 states and 9196 transitions. [2020-10-12 20:07:10,822 INFO L78 Accepts]: Start accepts. Automaton has 6729 states and 9196 transitions. Word has length 69 [2020-10-12 20:07:10,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:10,822 INFO L479 AbstractCegarLoop]: Abstraction has 6729 states and 9196 transitions. [2020-10-12 20:07:10,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 20:07:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 6729 states and 9196 transitions. [2020-10-12 20:07:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:07:10,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:10,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:07:10,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:07:10,834 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:10,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:10,838 INFO L82 PathProgramCache]: Analyzing trace with hash -181885345, now seen corresponding path program 1 times [2020-10-12 20:07:10,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:10,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597207440] [2020-10-12 20:07:10,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:10,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:12,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:13,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:13,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:15,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:15,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:15,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:07:15,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:07:15,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-12 20:07:15,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 20:07:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:07:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 20:07:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:16,242 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-10-12 20:07:16,484 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 28 [2020-10-12 20:07:16,603 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-10-12 20:07:19,708 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-12 20:07:19,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:19,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:19,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:19,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:19,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 20:07:19,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:07:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:19,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597207440] [2020-10-12 20:07:19,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:19,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 20:07:19,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101939005] [2020-10-12 20:07:19,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 20:07:19,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:19,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 20:07:19,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:07:19,817 INFO L87 Difference]: Start difference. First operand 6729 states and 9196 transitions. Second operand 12 states. [2020-10-12 20:07:22,970 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification that was a NOOP. DAG size: 761 [2020-10-12 20:07:42,741 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-10-12 20:07:54,163 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-12 20:07:55,414 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2020-10-12 20:07:59,402 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-12 20:07:59,559 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-10-12 20:07:59,805 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-12 20:08:00,847 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2020-10-12 20:08:01,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:01,396 INFO L93 Difference]: Finished difference Result 35166 states and 53472 transitions. [2020-10-12 20:08:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 20:08:01,397 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-12 20:08:01,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:01,464 INFO L225 Difference]: With dead ends: 35166 [2020-10-12 20:08:01,464 INFO L226 Difference]: Without dead ends: 34038 [2020-10-12 20:08:01,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=379, Invalid=1103, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 20:08:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34038 states. [2020-10-12 20:08:02,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34038 to 6714. [2020-10-12 20:08:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6714 states. [2020-10-12 20:08:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 9176 transitions. [2020-10-12 20:08:02,084 INFO L78 Accepts]: Start accepts. Automaton has 6714 states and 9176 transitions. Word has length 69 [2020-10-12 20:08:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:02,085 INFO L479 AbstractCegarLoop]: Abstraction has 6714 states and 9176 transitions. [2020-10-12 20:08:02,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 20:08:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 6714 states and 9176 transitions. [2020-10-12 20:08:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 20:08:02,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:02,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:08:02,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:08:02,095 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:02,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:02,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1758010112, now seen corresponding path program 1 times [2020-10-12 20:08:02,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:02,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137916620] [2020-10-12 20:08:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:02,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:02,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:03,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:03,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:03,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:04,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:05,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:05,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:07,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:07,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 20:08:07,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:08:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:08:07,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:08:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:08:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:08:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:10,478 WARN L193 SmtUtils]: Spent 2.68 s on a formula simplification that was a NOOP. DAG size: 736 [2020-10-12 20:08:10,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:10,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:10,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:10,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:10,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 20:08:10,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:10,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:08:10,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:10,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:08:10,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:08:10,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137916620] [2020-10-12 20:08:10,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:10,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 20:08:10,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190785033] [2020-10-12 20:08:10,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 20:08:10,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:10,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 20:08:10,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:08:10,649 INFO L87 Difference]: Start difference. First operand 6714 states and 9176 transitions. Second operand 15 states. [2020-10-12 20:08:10,800 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-12 20:08:16,817 WARN L193 SmtUtils]: Spent 5.91 s on a formula simplification. DAG size of input: 768 DAG size of output: 766 [2020-10-12 20:08:17,737 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39