/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:39:07,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:39:07,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:39:08,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:39:08,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:39:08,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:39:08,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:39:08,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:39:08,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:39:08,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:39:08,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:39:08,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:39:08,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:39:08,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:39:08,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:39:08,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:39:08,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:39:08,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:39:08,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:39:08,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:39:08,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:39:08,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:39:08,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:39:08,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:39:08,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:39:08,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:39:08,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:39:08,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:39:08,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:39:08,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:39:08,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:39:08,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:39:08,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:39:08,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:39:08,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:39:08,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:39:08,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:39:08,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:39:08,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:39:08,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:39:08,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:39:08,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:39:08,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:39:08,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:39:08,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:39:08,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:39:08,158 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:39:08,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:39:08,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:39:08,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:39:08,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:39:08,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:39:08,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:39:08,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:39:08,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:39:08,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:39:08,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:39:08,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:39:08,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:39:08,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:39:08,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:39:08,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:39:08,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:39:08,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:39:08,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:39:08,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:39:08,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:39:08,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:39:08,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:39:08,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:39:08,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:39:08,165 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:39:08,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:39:08,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:39:08,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:39:08,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:39:08,655 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:39:08,656 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 12:39:08,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcde7b9ad/e7f9d932fcb949fb9156cf2e884f43a7/FLAG60a2b791d [2020-09-21 12:39:09,538 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:39:09,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 12:39:09,573 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcde7b9ad/e7f9d932fcb949fb9156cf2e884f43a7/FLAG60a2b791d [2020-09-21 12:39:09,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcde7b9ad/e7f9d932fcb949fb9156cf2e884f43a7 [2020-09-21 12:39:09,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:39:09,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:39:09,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:39:09,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:39:09,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:39:09,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:39:09" (1/1) ... [2020-09-21 12:39:09,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a9d3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:39:09, skipping insertion in model container [2020-09-21 12:39:09,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:39:09" (1/1) ... [2020-09-21 12:39:09,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:39:09,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:39:11,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:39:11,389 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:39:12,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:39:12,902 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:39:12,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:39:12 WrapperNode [2020-09-21 12:39:12,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:39:12,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:39:12,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:39:12,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:39:12,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:39:12" (1/1) ... [2020-09-21 12:39:12,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:39:12" (1/1) ... [2020-09-21 12:39:12,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:39:12" (1/1) ... [2020-09-21 12:39:12,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:39:12" (1/1) ... [2020-09-21 12:39:13,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:39:12" (1/1) ... [2020-09-21 12:39:13,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:39:12" (1/1) ... [2020-09-21 12:39:13,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:39:12" (1/1) ... [2020-09-21 12:39:13,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:39:13,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:39:13,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:39:13,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:39:13,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:39:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:39:13,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:39:13,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:39:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:39:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:39:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:39:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 12:39:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-21 12:39:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-21 12:39:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-21 12:39:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:39:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:39:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-21 12:39:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-21 12:39:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-21 12:39:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-21 12:39:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-21 12:39:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-21 12:39:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-21 12:39:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-21 12:39:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:39:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:39:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:39:16,448 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:39:16,449 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:39:16,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:39:16 BoogieIcfgContainer [2020-09-21 12:39:16,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:39:16,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:39:16,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:39:16,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:39:16,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:39:09" (1/3) ... [2020-09-21 12:39:16,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d5e502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:39:16, skipping insertion in model container [2020-09-21 12:39:16,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:39:12" (2/3) ... [2020-09-21 12:39:16,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d5e502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:39:16, skipping insertion in model container [2020-09-21 12:39:16,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:39:16" (3/3) ... [2020-09-21 12:39:16,478 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-09-21 12:39:16,489 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:39:16,504 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-09-21 12:39:16,528 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-09-21 12:39:16,571 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:39:16,572 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:39:16,572 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:39:16,572 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:39:16,572 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:39:16,572 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:39:16,572 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:39:16,572 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:39:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-09-21 12:39:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-21 12:39:16,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:16,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:39:16,672 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:16,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:16,682 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-09-21 12:39:16,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:16,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028448314] [2020-09-21 12:39:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:18,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:19,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:19,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-09-21 12:39:19,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:39:19,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1690 [2020-09-21 12:39:19,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-21 12:39:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-09-21 12:39:19,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:39:20,674 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 12:39:20,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:20,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:20,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:20,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:20,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-21 12:39:20,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:21,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028448314] [2020-09-21 12:39:21,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:21,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:21,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707636177] [2020-09-21 12:39:21,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:21,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:21,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:21,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:21,057 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-09-21 12:39:21,706 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-09-21 12:39:30,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:30,224 INFO L93 Difference]: Finished difference Result 1776 states and 3147 transitions. [2020-09-21 12:39:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:30,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-09-21 12:39:30,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:30,267 INFO L225 Difference]: With dead ends: 1776 [2020-09-21 12:39:30,267 INFO L226 Difference]: Without dead ends: 1481 [2020-09-21 12:39:30,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-09-21 12:39:30,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2020-09-21 12:39:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-09-21 12:39:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2266 transitions. [2020-09-21 12:39:30,432 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2266 transitions. Word has length 324 [2020-09-21 12:39:30,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:30,434 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2266 transitions. [2020-09-21 12:39:30,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:30,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2266 transitions. [2020-09-21 12:39:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-21 12:39:30,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:30,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:39:30,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:39:30,443 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:30,444 INFO L82 PathProgramCache]: Analyzing trace with hash -220420006, now seen corresponding path program 1 times [2020-09-21 12:39:30,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:30,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842430637] [2020-09-21 12:39:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:30,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:31,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:31,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-09-21 12:39:31,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:39:31,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-09-21 12:39:31,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-09-21 12:39:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 231 [2020-09-21 12:39:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:32,822 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 12:39:32,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:32,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:32,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:32,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:39:32,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:33,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842430637] [2020-09-21 12:39:33,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:33,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:33,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474702449] [2020-09-21 12:39:33,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:33,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:33,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:33,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:33,064 INFO L87 Difference]: Start difference. First operand 1479 states and 2266 transitions. Second operand 4 states. [2020-09-21 12:39:33,767 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-09-21 12:39:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:40,918 INFO L93 Difference]: Finished difference Result 2852 states and 4423 transitions. [2020-09-21 12:39:40,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:40,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-09-21 12:39:40,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:40,935 INFO L225 Difference]: With dead ends: 2852 [2020-09-21 12:39:40,935 INFO L226 Difference]: Without dead ends: 2439 [2020-09-21 12:39:40,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-09-21 12:39:41,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2437. [2020-09-21 12:39:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-09-21 12:39:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3757 transitions. [2020-09-21 12:39:41,019 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3757 transitions. Word has length 324 [2020-09-21 12:39:41,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:41,020 INFO L479 AbstractCegarLoop]: Abstraction has 2437 states and 3757 transitions. [2020-09-21 12:39:41,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:39:41,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3757 transitions. [2020-09-21 12:39:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-09-21 12:39:41,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:41,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:39:41,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:39:41,036 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:41,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:41,037 INFO L82 PathProgramCache]: Analyzing trace with hash -578874774, now seen corresponding path program 1 times [2020-09-21 12:39:41,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:41,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939585128] [2020-09-21 12:39:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:41,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:42,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:42,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-09-21 12:39:42,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:39:42,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1523 [2020-09-21 12:39:42,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:39:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:39:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-21 12:39:42,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:44,090 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 12:39:44,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:44,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:44,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:44,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:44,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:39:44,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:44,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:44,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:44,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:39:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:44,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939585128] [2020-09-21 12:39:44,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:44,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:39:44,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217717289] [2020-09-21 12:39:44,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:39:44,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:44,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:39:44,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:39:44,456 INFO L87 Difference]: Start difference. First operand 2437 states and 3757 transitions. Second operand 5 states. [2020-09-21 12:39:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:39:55,516 INFO L93 Difference]: Finished difference Result 7163 states and 11020 transitions. [2020-09-21 12:39:55,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:39:55,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-09-21 12:39:55,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:39:55,545 INFO L225 Difference]: With dead ends: 7163 [2020-09-21 12:39:55,545 INFO L226 Difference]: Without dead ends: 4777 [2020-09-21 12:39:55,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:39:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2020-09-21 12:39:55,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4653. [2020-09-21 12:39:55,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4653 states. [2020-09-21 12:39:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 7165 transitions. [2020-09-21 12:39:55,774 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 7165 transitions. Word has length 324 [2020-09-21 12:39:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:39:55,775 INFO L479 AbstractCegarLoop]: Abstraction has 4653 states and 7165 transitions. [2020-09-21 12:39:55,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:39:55,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 7165 transitions. [2020-09-21 12:39:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-09-21 12:39:55,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:39:55,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:39:55,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:39:55,796 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:39:55,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:39:55,797 INFO L82 PathProgramCache]: Analyzing trace with hash 76253758, now seen corresponding path program 1 times [2020-09-21 12:39:55,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:39:55,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438565969] [2020-09-21 12:39:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:39:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:56,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:56,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:57,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:57,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-09-21 12:39:57,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:39:57,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-09-21 12:39:57,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:39:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:39:57,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-21 12:39:57,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:58,052 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-09-21 12:39:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:39:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:39:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:39:58,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:39:58,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:39:58,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:39:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-21 12:39:58,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:39:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:39:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:39:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:39:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:39:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:39:58,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438565969] [2020-09-21 12:39:58,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:39:58,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:39:58,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898164512] [2020-09-21 12:39:58,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:39:58,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:39:58,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:39:58,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:39:58,437 INFO L87 Difference]: Start difference. First operand 4653 states and 7165 transitions. Second operand 4 states.