/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=NARROWEST --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.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:31:44,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:31:44,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:31:44,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:31:44,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:31:44,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:31:44,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:31:44,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:31:44,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:31:44,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:31:44,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:31:44,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:31:44,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:31:44,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:31:44,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:31:44,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:31:44,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:31:44,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:31:44,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:31:44,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:31:44,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:31:44,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:31:44,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:31:44,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:31:44,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:31:44,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:31:44,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:31:44,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:31:44,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:31:44,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:31:44,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:31:44,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:31:44,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:31:44,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:31:44,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:31:44,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:31:44,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:31:44,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:31:44,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:31:44,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:31:44,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:31:44,118 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 [2020-10-13 14:31:44,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:31:44,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:31:44,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:31:44,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:31:44,147 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:31:44,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:31:44,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:31:44,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:31:44,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:31:44,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:31:44,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:31:44,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:31:44,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:31:44,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:31:44,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:31:44,149 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:31:44,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:31:44,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:31:44,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:31:44,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:31:44,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:31:44,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:31:44,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:31:44,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:31:44,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:31:44,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:31:44,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:31:44,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:31:44,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:31:44,152 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:31:44,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:31:44,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:31:44,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:31:44,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:31:44,483 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:31:44,483 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 14:31:44,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/901627b50/4eaec54756e14f7081a6a40e5a89adb9/FLAG46fb0b6e1 [2020-10-13 14:31:45,013 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:31:45,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 14:31:45,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/901627b50/4eaec54756e14f7081a6a40e5a89adb9/FLAG46fb0b6e1 [2020-10-13 14:31:45,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/901627b50/4eaec54756e14f7081a6a40e5a89adb9 [2020-10-13 14:31:45,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:31:45,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:31:45,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:31:45,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:31:45,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:31:45,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:31:45" (1/1) ... [2020-10-13 14:31:45,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363f8acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:45, skipping insertion in model container [2020-10-13 14:31:45,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:31:45" (1/1) ... [2020-10-13 14:31:45,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:31:45,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:31:45,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:31:45,973 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:31:46,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:31:46,147 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:31:46,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:46 WrapperNode [2020-10-13 14:31:46,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:31:46,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:31:46,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:31:46,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:31:46,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:46" (1/1) ... [2020-10-13 14:31:46,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:46" (1/1) ... [2020-10-13 14:31:46,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:46" (1/1) ... [2020-10-13 14:31:46,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:46" (1/1) ... [2020-10-13 14:31:46,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:46" (1/1) ... [2020-10-13 14:31:46,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:46" (1/1) ... [2020-10-13 14:31:46,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:46" (1/1) ... [2020-10-13 14:31:46,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:31:46,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:31:46,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:31:46,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:31:46,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:46" (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 [2020-10-13 14:31:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:31:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:31:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:31:46,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:31:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:31:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:31:46,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:31:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:31:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:31:46,360 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:31:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:31:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:31:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:31:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:31:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:31:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:31:46,361 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:31:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:31:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:31:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-13 14:31:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-13 14:31:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:31:46,362 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:31:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:31:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:31:46,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:31:47,373 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:31:47,374 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:31:47,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:31:47 BoogieIcfgContainer [2020-10-13 14:31:47,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:31:47,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:31:47,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:31:47,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:31:47,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:31:45" (1/3) ... [2020-10-13 14:31:47,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d62b412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:31:47, skipping insertion in model container [2020-10-13 14:31:47,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:46" (2/3) ... [2020-10-13 14:31:47,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d62b412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:31:47, skipping insertion in model container [2020-10-13 14:31:47,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:31:47" (3/3) ... [2020-10-13 14:31:47,388 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 14:31:47,398 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:31:47,406 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:31:47,420 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:31:47,445 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:31:47,445 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:31:47,445 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:31:47,446 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:31:47,446 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:31:47,446 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:31:47,446 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:31:47,447 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:31:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-10-13 14:31:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 14:31:47,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:47,485 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] [2020-10-13 14:31:47,486 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:47,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:47,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1347999356, now seen corresponding path program 1 times [2020-10-13 14:31:47,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:47,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17999754] [2020-10-13 14:31:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:48,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:48,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:49,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:49,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:52,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 14:31:52,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:31:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 14:31:52,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:31:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:31:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 14:31:52,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:31:53,659 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:31:53,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:31:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:53,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:53,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:31:53,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:31:53,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:31:53,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 14:31:53,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:31:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:31:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:31:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:31:53,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:31:53,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:31:53,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17999754] [2020-10-13 14:31:53,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:31:53,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:31:53,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233841115] [2020-10-13 14:31:53,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:31:53,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:31:53,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:31:53,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:31:53,796 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 7 states. [2020-10-13 14:31:54,232 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:31:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:31:56,639 INFO L93 Difference]: Finished difference Result 1139 states and 1864 transitions. [2020-10-13 14:31:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:31:56,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-13 14:31:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:31:56,668 INFO L225 Difference]: With dead ends: 1139 [2020-10-13 14:31:56,669 INFO L226 Difference]: Without dead ends: 966 [2020-10-13 14:31:56,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:31:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-10-13 14:31:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 481. [2020-10-13 14:31:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-10-13 14:31:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 704 transitions. [2020-10-13 14:31:56,771 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 704 transitions. Word has length 128 [2020-10-13 14:31:56,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:31:56,771 INFO L479 AbstractCegarLoop]: Abstraction has 481 states and 704 transitions. [2020-10-13 14:31:56,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:31:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 704 transitions. [2020-10-13 14:31:56,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 14:31:56,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:31:56,776 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] [2020-10-13 14:31:56,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:31:56,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:31:56,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:31:56,777 INFO L82 PathProgramCache]: Analyzing trace with hash 421625622, now seen corresponding path program 1 times [2020-10-13 14:31:56,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:31:56,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310491338] [2020-10-13 14:31:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:31:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:31:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:56,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:57,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:58,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:59,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:31:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:01,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:01,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 14:32:01,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:32:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 14:32:01,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:32:01,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 14:32:01,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:32:02,300 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:32:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:02,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:02,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:02,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:02,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:32:02,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:02,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:02,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310491338] [2020-10-13 14:32:02,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:02,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:02,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873865936] [2020-10-13 14:32:02,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:02,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:02,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:02,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:02,384 INFO L87 Difference]: Start difference. First operand 481 states and 704 transitions. Second operand 7 states. [2020-10-13 14:32:02,675 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:32:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:04,744 INFO L93 Difference]: Finished difference Result 2338 states and 3646 transitions. [2020-10-13 14:32:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:04,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-13 14:32:04,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:04,760 INFO L225 Difference]: With dead ends: 2338 [2020-10-13 14:32:04,760 INFO L226 Difference]: Without dead ends: 2090 [2020-10-13 14:32:04,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:04,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2020-10-13 14:32:04,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 833. [2020-10-13 14:32:04,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2020-10-13 14:32:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1254 transitions. [2020-10-13 14:32:04,863 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1254 transitions. Word has length 129 [2020-10-13 14:32:04,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:04,867 INFO L479 AbstractCegarLoop]: Abstraction has 833 states and 1254 transitions. [2020-10-13 14:32:04,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:04,867 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1254 transitions. [2020-10-13 14:32:04,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 14:32:04,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:04,875 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] [2020-10-13 14:32:04,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:32:04,876 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:04,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:04,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1659609381, now seen corresponding path program 1 times [2020-10-13 14:32:04,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:04,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995382609] [2020-10-13 14:32:04,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:05,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:05,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:09,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:09,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 14:32:09,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:32:09,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:32:09,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:32:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 14:32:09,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:32:10,291 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:32:10,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:10,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:10,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:10,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:10,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:32:10,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:10,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:10,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995382609] [2020-10-13 14:32:10,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:10,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:10,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588508833] [2020-10-13 14:32:10,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:10,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:10,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:10,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:10,359 INFO L87 Difference]: Start difference. First operand 833 states and 1254 transitions. Second operand 7 states. [2020-10-13 14:32:10,697 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:32:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:13,175 INFO L93 Difference]: Finished difference Result 4583 states and 7189 transitions. [2020-10-13 14:32:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:13,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-13 14:32:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:13,199 INFO L225 Difference]: With dead ends: 4583 [2020-10-13 14:32:13,199 INFO L226 Difference]: Without dead ends: 4081 [2020-10-13 14:32:13,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2020-10-13 14:32:13,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 1559. [2020-10-13 14:32:13,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-10-13 14:32:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2386 transitions. [2020-10-13 14:32:13,347 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2386 transitions. Word has length 129 [2020-10-13 14:32:13,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:13,347 INFO L479 AbstractCegarLoop]: Abstraction has 1559 states and 2386 transitions. [2020-10-13 14:32:13,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2386 transitions. [2020-10-13 14:32:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 14:32:13,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:13,351 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] [2020-10-13 14:32:13,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:32:13,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:13,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:13,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1588969412, now seen corresponding path program 1 times [2020-10-13 14:32:13,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:13,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288305948] [2020-10-13 14:32:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:13,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:13,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:13,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:13,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:14,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:14,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:14,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:15,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:15,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:18,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:18,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 14:32:18,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:32:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:32:18,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 14:32:18,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 14:32:18,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:18,798 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:32:18,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:18,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:18,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:18,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:32:18,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:18,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:18,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:18,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:32:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:18,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288305948] [2020-10-13 14:32:18,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:18,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:18,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924318803] [2020-10-13 14:32:18,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:18,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:18,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:18,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:18,901 INFO L87 Difference]: Start difference. First operand 1559 states and 2386 transitions. Second operand 7 states. [2020-10-13 14:32:19,385 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:32:22,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:22,158 INFO L93 Difference]: Finished difference Result 10656 states and 16802 transitions. [2020-10-13 14:32:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:22,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-13 14:32:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:22,217 INFO L225 Difference]: With dead ends: 10656 [2020-10-13 14:32:22,218 INFO L226 Difference]: Without dead ends: 9259 [2020-10-13 14:32:22,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:22,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9259 states. [2020-10-13 14:32:22,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9259 to 4005. [2020-10-13 14:32:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-13 14:32:22,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6227 transitions. [2020-10-13 14:32:22,626 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6227 transitions. Word has length 130 [2020-10-13 14:32:22,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:22,627 INFO L479 AbstractCegarLoop]: Abstraction has 4005 states and 6227 transitions. [2020-10-13 14:32:22,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6227 transitions. [2020-10-13 14:32:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 14:32:22,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:22,632 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] [2020-10-13 14:32:22,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:32:22,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:22,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:22,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1147316554, now seen corresponding path program 1 times [2020-10-13 14:32:22,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:22,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718340196] [2020-10-13 14:32:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:23,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:23,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:23,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:26,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:26,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:26,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:27,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:27,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 14:32:27,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:32:27,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:32:27,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:27,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:27,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:32:27,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 14:32:27,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:28,054 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:32:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:28,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:28,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:28,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:28,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:28,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:32:28,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:28,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718340196] [2020-10-13 14:32:28,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:28,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:28,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145992796] [2020-10-13 14:32:28,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:28,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:28,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:28,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:28,130 INFO L87 Difference]: Start difference. First operand 4005 states and 6227 transitions. Second operand 7 states. [2020-10-13 14:32:28,431 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:32:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:31,565 INFO L93 Difference]: Finished difference Result 28461 states and 44947 transitions. [2020-10-13 14:32:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:31,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-13 14:32:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:31,647 INFO L225 Difference]: With dead ends: 28461 [2020-10-13 14:32:31,647 INFO L226 Difference]: Without dead ends: 24995 [2020-10-13 14:32:31,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:31,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24995 states. [2020-10-13 14:32:32,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24995 to 7644. [2020-10-13 14:32:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7644 states. [2020-10-13 14:32:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7644 states to 7644 states and 11904 transitions. [2020-10-13 14:32:32,296 INFO L78 Accepts]: Start accepts. Automaton has 7644 states and 11904 transitions. Word has length 131 [2020-10-13 14:32:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:32,297 INFO L479 AbstractCegarLoop]: Abstraction has 7644 states and 11904 transitions. [2020-10-13 14:32:32,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:32,297 INFO L276 IsEmpty]: Start isEmpty. Operand 7644 states and 11904 transitions. [2020-10-13 14:32:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 14:32:32,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:32,304 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] [2020-10-13 14:32:32,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:32:32,304 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:32,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:32,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1124373718, now seen corresponding path program 1 times [2020-10-13 14:32:32,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:32,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242796579] [2020-10-13 14:32:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:32,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:32,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:33,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:35,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:37,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:37,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 14:32:37,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:32:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:32:37,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:32:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 14:32:37,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:37,646 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:32:37,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:37,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:37,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:37,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:37,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:37,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:32:37,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:37,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:37,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242796579] [2020-10-13 14:32:37,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:37,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:37,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051707609] [2020-10-13 14:32:37,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:37,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:37,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:37,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:37,707 INFO L87 Difference]: Start difference. First operand 7644 states and 11904 transitions. Second operand 7 states. [2020-10-13 14:32:38,021 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:32:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:41,815 INFO L93 Difference]: Finished difference Result 48928 states and 76819 transitions. [2020-10-13 14:32:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:41,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-13 14:32:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:41,904 INFO L225 Difference]: With dead ends: 48928 [2020-10-13 14:32:41,904 INFO L226 Difference]: Without dead ends: 43901 [2020-10-13 14:32:41,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:41,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43901 states. [2020-10-13 14:32:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43901 to 15071. [2020-10-13 14:32:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15071 states. [2020-10-13 14:32:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15071 states to 15071 states and 23449 transitions. [2020-10-13 14:32:43,854 INFO L78 Accepts]: Start accepts. Automaton has 15071 states and 23449 transitions. Word has length 131 [2020-10-13 14:32:43,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:43,854 INFO L479 AbstractCegarLoop]: Abstraction has 15071 states and 23449 transitions. [2020-10-13 14:32:43,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 15071 states and 23449 transitions. [2020-10-13 14:32:43,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 14:32:43,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:43,867 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] [2020-10-13 14:32:43,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:32:43,867 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:43,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:43,868 INFO L82 PathProgramCache]: Analyzing trace with hash -539964988, now seen corresponding path program 1 times [2020-10-13 14:32:43,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:43,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059345464] [2020-10-13 14:32:43,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:43,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:43,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:44,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:44,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:45,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:46,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:48,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:48,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 14:32:48,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:32:48,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:32:48,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:48,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:32:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 14:32:48,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:49,232 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:32:49,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:49,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:49,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:49,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:49,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:32:49,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:49,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059345464] [2020-10-13 14:32:49,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:49,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:49,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14285327] [2020-10-13 14:32:49,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:49,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:49,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:49,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:49,276 INFO L87 Difference]: Start difference. First operand 15071 states and 23449 transitions. Second operand 7 states. [2020-10-13 14:32:49,570 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:32:53,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:53,427 INFO L93 Difference]: Finished difference Result 58443 states and 91581 transitions. [2020-10-13 14:32:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:32:53,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-13 14:32:53,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:53,514 INFO L225 Difference]: With dead ends: 58443 [2020-10-13 14:32:53,515 INFO L226 Difference]: Without dead ends: 45567 [2020-10-13 14:32:53,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:32:53,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45567 states. [2020-10-13 14:32:54,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45567 to 14686. [2020-10-13 14:32:54,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14686 states. [2020-10-13 14:32:54,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14686 states to 14686 states and 22855 transitions. [2020-10-13 14:32:54,883 INFO L78 Accepts]: Start accepts. Automaton has 14686 states and 22855 transitions. Word has length 132 [2020-10-13 14:32:54,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:54,883 INFO L479 AbstractCegarLoop]: Abstraction has 14686 states and 22855 transitions. [2020-10-13 14:32:54,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:32:54,884 INFO L276 IsEmpty]: Start isEmpty. Operand 14686 states and 22855 transitions. [2020-10-13 14:32:54,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 14:32:54,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:54,895 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] [2020-10-13 14:32:54,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:32:54,895 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:54,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:54,896 INFO L82 PathProgramCache]: Analyzing trace with hash -678135245, now seen corresponding path program 1 times [2020-10-13 14:32:54,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:54,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217956757] [2020-10-13 14:32:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:57,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:58,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:58,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:58,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:59,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:59,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 14:32:59,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:32:59,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:32:59,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:59,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:59,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:32:59,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 14:32:59,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:00,254 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:33:00,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:00,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:00,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:00,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:33:00,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:00,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:00,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:00,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:00,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217956757] [2020-10-13 14:33:00,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:00,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:33:00,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078378436] [2020-10-13 14:33:00,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:33:00,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:00,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:33:00,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:33:00,305 INFO L87 Difference]: Start difference. First operand 14686 states and 22855 transitions. Second operand 7 states. [2020-10-13 14:33:00,615 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:33:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:06,604 INFO L93 Difference]: Finished difference Result 83762 states and 131277 transitions. [2020-10-13 14:33:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:33:06,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-13 14:33:06,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:06,706 INFO L225 Difference]: With dead ends: 83762 [2020-10-13 14:33:06,706 INFO L226 Difference]: Without dead ends: 74986 [2020-10-13 14:33:06,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:33:06,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74986 states. [2020-10-13 14:33:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74986 to 19568. [2020-10-13 14:33:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19568 states. [2020-10-13 14:33:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19568 states to 19568 states and 30330 transitions. [2020-10-13 14:33:08,468 INFO L78 Accepts]: Start accepts. Automaton has 19568 states and 30330 transitions. Word has length 132 [2020-10-13 14:33:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:08,469 INFO L479 AbstractCegarLoop]: Abstraction has 19568 states and 30330 transitions. [2020-10-13 14:33:08,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:33:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand 19568 states and 30330 transitions. [2020-10-13 14:33:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 14:33:08,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:08,482 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] [2020-10-13 14:33:08,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:33:08,482 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:08,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2014154133, now seen corresponding path program 1 times [2020-10-13 14:33:08,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:08,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126712976] [2020-10-13 14:33:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:08,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:08,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:08,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:08,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:09,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:09,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:11,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:13,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:13,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 14:33:13,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:33:13,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:33:13,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:13,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:33:13,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:33:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 14:33:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:13,837 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:33:13,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:13,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:13,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:13,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:13,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:33:13,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:13,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:13,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:13,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:13,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126712976] [2020-10-13 14:33:13,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:13,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:33:13,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025655494] [2020-10-13 14:33:13,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:33:13,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:13,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:33:13,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:33:13,881 INFO L87 Difference]: Start difference. First operand 19568 states and 30330 transitions. Second operand 7 states. [2020-10-13 14:33:14,193 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:33:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:20,484 INFO L93 Difference]: Finished difference Result 69972 states and 109010 transitions. [2020-10-13 14:33:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:33:20,485 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-13 14:33:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:20,559 INFO L225 Difference]: With dead ends: 69972 [2020-10-13 14:33:20,559 INFO L226 Difference]: Without dead ends: 58630 [2020-10-13 14:33:20,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:33:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58630 states. [2020-10-13 14:33:22,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58630 to 19474. [2020-10-13 14:33:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19474 states. [2020-10-13 14:33:22,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19474 states to 19474 states and 30197 transitions. [2020-10-13 14:33:22,168 INFO L78 Accepts]: Start accepts. Automaton has 19474 states and 30197 transitions. Word has length 132 [2020-10-13 14:33:22,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:22,169 INFO L479 AbstractCegarLoop]: Abstraction has 19474 states and 30197 transitions. [2020-10-13 14:33:22,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:33:22,169 INFO L276 IsEmpty]: Start isEmpty. Operand 19474 states and 30197 transitions. [2020-10-13 14:33:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 14:33:22,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:22,178 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] [2020-10-13 14:33:22,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:33:22,178 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:22,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1437023525, now seen corresponding path program 1 times [2020-10-13 14:33:22,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:22,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952141379] [2020-10-13 14:33:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:22,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:22,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:22,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:25,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:25,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:27,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 14:33:27,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:33:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:33:27,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:33:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:33:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 14:33:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:27,569 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:33:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:27,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:28,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:28,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:28,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-10-13 14:33:28,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:33:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:28,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952141379] [2020-10-13 14:33:28,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:28,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:33:28,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185900977] [2020-10-13 14:33:28,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:33:28,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:28,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:33:28,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:33:28,330 INFO L87 Difference]: Start difference. First operand 19474 states and 30197 transitions. Second operand 6 states. [2020-10-13 14:33:28,644 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-13 14:33:31,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:31,150 INFO L93 Difference]: Finished difference Result 31191 states and 48479 transitions. [2020-10-13 14:33:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:33:31,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-10-13 14:33:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:31,170 INFO L225 Difference]: With dead ends: 31191 [2020-10-13 14:33:31,170 INFO L226 Difference]: Without dead ends: 12956 [2020-10-13 14:33:31,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:33:31,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12956 states. [2020-10-13 14:33:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12956 to 12951. [2020-10-13 14:33:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12951 states. [2020-10-13 14:33:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12951 states to 12951 states and 20069 transitions. [2020-10-13 14:33:32,214 INFO L78 Accepts]: Start accepts. Automaton has 12951 states and 20069 transitions. Word has length 133 [2020-10-13 14:33:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:32,215 INFO L479 AbstractCegarLoop]: Abstraction has 12951 states and 20069 transitions. [2020-10-13 14:33:32,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:33:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 12951 states and 20069 transitions. [2020-10-13 14:33:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 14:33:32,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:32,222 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] [2020-10-13 14:33:32,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:33:32,222 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:32,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:32,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1590574420, now seen corresponding path program 1 times [2020-10-13 14:33:32,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:32,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966858629] [2020-10-13 14:33:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:32,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:32,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:32,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:33,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:37,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 14:33:37,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:33:37,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:33:37,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:33:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:33:37,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 14:33:37,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:37,590 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:33:37,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:37,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:37,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:37,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:33:37,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:37,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:37,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:37,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:37,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:37,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966858629] [2020-10-13 14:33:37,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:37,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:33:37,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127445895] [2020-10-13 14:33:37,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:33:37,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:37,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:33:37,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:33:37,633 INFO L87 Difference]: Start difference. First operand 12951 states and 20069 transitions. Second operand 7 states. [2020-10-13 14:33:37,999 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:33:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:43,619 INFO L93 Difference]: Finished difference Result 54631 states and 85117 transitions. [2020-10-13 14:33:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:33:43,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-13 14:33:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:43,675 INFO L225 Difference]: With dead ends: 54631 [2020-10-13 14:33:43,675 INFO L226 Difference]: Without dead ends: 43515 [2020-10-13 14:33:43,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:33:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43515 states. [2020-10-13 14:33:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43515 to 12897. [2020-10-13 14:33:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12897 states. [2020-10-13 14:33:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12897 states to 12897 states and 19990 transitions. [2020-10-13 14:33:44,893 INFO L78 Accepts]: Start accepts. Automaton has 12897 states and 19990 transitions. Word has length 133 [2020-10-13 14:33:44,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:44,893 INFO L479 AbstractCegarLoop]: Abstraction has 12897 states and 19990 transitions. [2020-10-13 14:33:44,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:33:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand 12897 states and 19990 transitions. [2020-10-13 14:33:44,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 14:33:44,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:44,899 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] [2020-10-13 14:33:44,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:33:44,899 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:44,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:44,900 INFO L82 PathProgramCache]: Analyzing trace with hash -479232906, now seen corresponding path program 1 times [2020-10-13 14:33:44,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:44,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608729613] [2020-10-13 14:33:44,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:44,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:45,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:45,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:45,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:45,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:49,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:49,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:49,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 14:33:49,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:33:49,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:33:49,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:33:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:33:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 14:33:49,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:50,247 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:33:50,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:50,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:50,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:50,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:50,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:33:50,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:50,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:50,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:50,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:33:50,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:50,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608729613] [2020-10-13 14:33:50,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:50,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:33:50,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403057561] [2020-10-13 14:33:50,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:33:50,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:50,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:33:50,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:33:50,297 INFO L87 Difference]: Start difference. First operand 12897 states and 19990 transitions. Second operand 6 states. [2020-10-13 14:33:50,617 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-13 14:33:54,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:54,002 INFO L93 Difference]: Finished difference Result 38287 states and 59509 transitions. [2020-10-13 14:33:54,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:33:54,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-10-13 14:33:54,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:54,035 INFO L225 Difference]: With dead ends: 38287 [2020-10-13 14:33:54,035 INFO L226 Difference]: Without dead ends: 25461 [2020-10-13 14:33:54,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:33:54,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25461 states. [2020-10-13 14:33:56,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25461 to 25459. [2020-10-13 14:33:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25459 states. [2020-10-13 14:33:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25459 states to 25459 states and 39461 transitions. [2020-10-13 14:33:56,258 INFO L78 Accepts]: Start accepts. Automaton has 25459 states and 39461 transitions. Word has length 133 [2020-10-13 14:33:56,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:56,258 INFO L479 AbstractCegarLoop]: Abstraction has 25459 states and 39461 transitions. [2020-10-13 14:33:56,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:33:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 25459 states and 39461 transitions. [2020-10-13 14:33:56,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 14:33:56,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:56,268 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] [2020-10-13 14:33:56,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:33:56,268 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:56,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:56,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2114072036, now seen corresponding path program 1 times [2020-10-13 14:33:56,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:56,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607311801] [2020-10-13 14:33:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:56,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:58,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:01,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:01,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 14:34:01,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:34:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:34:01,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:34:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:34:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 14:34:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:01,596 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:34:01,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:01,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:01,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:01,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:01,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:01,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:34:01,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:01,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:01,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:01,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:01,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:01,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607311801] [2020-10-13 14:34:01,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:01,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:34:01,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724891985] [2020-10-13 14:34:01,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:34:01,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:34:01,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:34:01,642 INFO L87 Difference]: Start difference. First operand 25459 states and 39461 transitions. Second operand 7 states. [2020-10-13 14:34:01,961 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:34:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:12,443 INFO L93 Difference]: Finished difference Result 108459 states and 168557 transitions. [2020-10-13 14:34:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:34:12,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-13 14:34:12,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:12,545 INFO L225 Difference]: With dead ends: 108459 [2020-10-13 14:34:12,545 INFO L226 Difference]: Without dead ends: 86144 [2020-10-13 14:34:12,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:34:12,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86144 states. [2020-10-13 14:34:15,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86144 to 25378. [2020-10-13 14:34:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25378 states. [2020-10-13 14:34:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25378 states to 25378 states and 39334 transitions. [2020-10-13 14:34:15,259 INFO L78 Accepts]: Start accepts. Automaton has 25378 states and 39334 transitions. Word has length 134 [2020-10-13 14:34:15,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:15,259 INFO L479 AbstractCegarLoop]: Abstraction has 25378 states and 39334 transitions. [2020-10-13 14:34:15,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:34:15,260 INFO L276 IsEmpty]: Start isEmpty. Operand 25378 states and 39334 transitions. [2020-10-13 14:34:15,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 14:34:15,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:15,270 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] [2020-10-13 14:34:15,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:34:15,270 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:15,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:15,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1975901779, now seen corresponding path program 1 times [2020-10-13 14:34:15,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:15,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884745987] [2020-10-13 14:34:15,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:15,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:15,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:15,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:20,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:20,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 14:34:20,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:34:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:34:20,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:34:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:34:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 14:34:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:20,622 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:34:20,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:20,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:20,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:20,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:20,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:20,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:34:20,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:20,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:20,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884745987] [2020-10-13 14:34:20,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:20,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:34:20,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428556299] [2020-10-13 14:34:20,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:34:20,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:20,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:34:20,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:34:20,661 INFO L87 Difference]: Start difference. First operand 25378 states and 39334 transitions. Second operand 7 states. [2020-10-13 14:34:20,973 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:34:31,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:31,341 INFO L93 Difference]: Finished difference Result 108098 states and 167982 transitions. [2020-10-13 14:34:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:34:31,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-13 14:34:31,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:31,433 INFO L225 Difference]: With dead ends: 108098 [2020-10-13 14:34:31,433 INFO L226 Difference]: Without dead ends: 85811 [2020-10-13 14:34:31,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:34:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85811 states. [2020-10-13 14:34:35,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85811 to 25293. [2020-10-13 14:34:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25293 states. [2020-10-13 14:34:35,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25293 states to 25293 states and 39203 transitions. [2020-10-13 14:34:35,295 INFO L78 Accepts]: Start accepts. Automaton has 25293 states and 39203 transitions. Word has length 134 [2020-10-13 14:34:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:35,295 INFO L479 AbstractCegarLoop]: Abstraction has 25293 states and 39203 transitions. [2020-10-13 14:34:35,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:34:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 25293 states and 39203 transitions. [2020-10-13 14:34:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 14:34:35,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:35,304 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] [2020-10-13 14:34:35,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:34:35,305 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:35,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:35,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2110523443, now seen corresponding path program 1 times [2020-10-13 14:34:35,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:35,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821517927] [2020-10-13 14:34:35,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:35,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:35,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:35,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:35,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:39,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:40,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 14:34:40,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:34:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:34:40,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:34:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:34:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 14:34:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:40,657 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:34:40,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:40,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:40,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:40,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:34:40,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:40,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:40,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821517927] [2020-10-13 14:34:40,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:40,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:34:40,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578576153] [2020-10-13 14:34:40,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:34:40,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:40,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:34:40,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:34:40,698 INFO L87 Difference]: Start difference. First operand 25293 states and 39203 transitions. Second operand 7 states. [2020-10-13 14:34:41,077 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:34:51,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:51,857 INFO L93 Difference]: Finished difference Result 108173 states and 168107 transitions. [2020-10-13 14:34:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:34:51,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-13 14:34:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:51,965 INFO L225 Difference]: With dead ends: 108173 [2020-10-13 14:34:51,965 INFO L226 Difference]: Without dead ends: 85818 [2020-10-13 14:34:51,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:34:52,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85818 states. [2020-10-13 14:34:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85818 to 25132. [2020-10-13 14:34:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25132 states. [2020-10-13 14:34:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25132 states to 25132 states and 38948 transitions. [2020-10-13 14:34:54,757 INFO L78 Accepts]: Start accepts. Automaton has 25132 states and 38948 transitions. Word has length 134 [2020-10-13 14:34:54,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:54,757 INFO L479 AbstractCegarLoop]: Abstraction has 25132 states and 38948 transitions. [2020-10-13 14:34:54,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:34:54,757 INFO L276 IsEmpty]: Start isEmpty. Operand 25132 states and 38948 transitions. [2020-10-13 14:34:54,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 14:34:54,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:54,767 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] [2020-10-13 14:34:54,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:34:54,767 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:54,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:54,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1972353186, now seen corresponding path program 1 times [2020-10-13 14:34:54,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:54,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582465456] [2020-10-13 14:34:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:54,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:55,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:57,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:57,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:57,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:59,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:59,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 14:34:59,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:34:59,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:34:59,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:34:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 14:34:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 14:34:59,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:00,109 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:35:00,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:00,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:00,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:00,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:00,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:35:00,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:00,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582465456] [2020-10-13 14:35:00,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:00,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:35:00,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916882609] [2020-10-13 14:35:00,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:35:00,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:00,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:35:00,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:35:00,165 INFO L87 Difference]: Start difference. First operand 25132 states and 38948 transitions. Second operand 7 states. [2020-10-13 14:35:00,464 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-13 14:35:12,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:12,005 INFO L93 Difference]: Finished difference Result 107772 states and 167468 transitions. [2020-10-13 14:35:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:35:12,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-13 14:35:12,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:12,098 INFO L225 Difference]: With dead ends: 107772 [2020-10-13 14:35:12,098 INFO L226 Difference]: Without dead ends: 85445 [2020-10-13 14:35:12,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:35:12,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85445 states. [2020-10-13 14:35:15,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85445 to 24967. [2020-10-13 14:35:15,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24967 states. [2020-10-13 14:35:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24967 states to 24967 states and 38689 transitions. [2020-10-13 14:35:15,281 INFO L78 Accepts]: Start accepts. Automaton has 24967 states and 38689 transitions. Word has length 134 [2020-10-13 14:35:15,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:15,281 INFO L479 AbstractCegarLoop]: Abstraction has 24967 states and 38689 transitions. [2020-10-13 14:35:15,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:35:15,281 INFO L276 IsEmpty]: Start isEmpty. Operand 24967 states and 38689 transitions. [2020-10-13 14:35:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 14:35:15,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:15,291 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] [2020-10-13 14:35:15,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:35:15,291 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:15,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:15,291 INFO L82 PathProgramCache]: Analyzing trace with hash -285805453, now seen corresponding path program 1 times [2020-10-13 14:35:15,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:15,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888240768] [2020-10-13 14:35:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:15,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:18,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:18,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:19,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:19,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:19,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:20,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:20,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 14:35:20,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:35:20,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:35:20,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:35:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:35:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 14:35:20,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:20,625 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 14:35:20,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:20,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:20,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:20,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:20,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:35:20,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:20,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:20,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:20,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888240768] [2020-10-13 14:35:20,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:20,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:35:20,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086919291] [2020-10-13 14:35:20,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:35:20,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:20,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:35:20,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:35:20,661 INFO L87 Difference]: Start difference. First operand 24967 states and 38689 transitions. Second operand 7 states. [2020-10-13 14:35:20,973 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 197