/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:06:46,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:06:46,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:06:46,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:06:46,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:06:46,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:06:46,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:06:46,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:06:46,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:06:46,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:06:46,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:06:46,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:06:46,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:06:46,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:06:46,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:06:46,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:06:46,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:06:46,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:06:46,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:06:46,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:06:46,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:06:46,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:06:46,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:06:46,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:06:46,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:06:46,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:06:46,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:06:46,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:06:46,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:06:46,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:06:46,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:06:46,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:06:46,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:06:46,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:06:46,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:06:46,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:06:46,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:06:46,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:06:46,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:06:46,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:06:46,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:06:46,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:06:46,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:06:46,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:06:46,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:06:46,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:06:46,880 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:06:46,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:06:46,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:06:46,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:06:46,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:06:46,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:06:46,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:06:46,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:06:46,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:06:46,882 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:06:46,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:06:46,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:06:46,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:06:46,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:06:46,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:06:46,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:06:46,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:06:46,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:06:46,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:06:46,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:06:46,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:06:46,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:06:46,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:06:46,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:06:46,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:06:46,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:06:47,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:06:47,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:06:47,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:06:47,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:06:47,236 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:06:47,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-14 09:06:47,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea9279686/a6be6d37fc324aa9b26b226c73d6170d/FLAG98ee2a4fa [2020-10-14 09:06:48,069 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:06:48,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-14 09:06:48,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea9279686/a6be6d37fc324aa9b26b226c73d6170d/FLAG98ee2a4fa [2020-10-14 09:06:48,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea9279686/a6be6d37fc324aa9b26b226c73d6170d [2020-10-14 09:06:48,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:06:48,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:06:48,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:06:48,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:06:48,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:06:48,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:48" (1/1) ... [2020-10-14 09:06:48,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6b7cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:48, skipping insertion in model container [2020-10-14 09:06:48,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:48" (1/1) ... [2020-10-14 09:06:48,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:06:48,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:06:49,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:06:49,856 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:06:50,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:06:50,232 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:06:50,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:50 WrapperNode [2020-10-14 09:06:50,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:06:50,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:06:50,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:06:50,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:06:50,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:50" (1/1) ... [2020-10-14 09:06:50,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:50" (1/1) ... [2020-10-14 09:06:50,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:50" (1/1) ... [2020-10-14 09:06:50,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:50" (1/1) ... [2020-10-14 09:06:50,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:50" (1/1) ... [2020-10-14 09:06:50,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:50" (1/1) ... [2020-10-14 09:06:50,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:50" (1/1) ... [2020-10-14 09:06:50,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:06:50,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:06:50,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:06:50,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:06:50,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:06:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:06:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:06:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:06:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:06:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:06:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:06:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:06:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:06:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:06:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:06:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:06:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:06:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:06:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:06:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:06:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:06:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:06:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:06:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:06:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:06:54,670 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:06:54,670 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:06:54,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:54 BoogieIcfgContainer [2020-10-14 09:06:54,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:06:54,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:06:54,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:06:54,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:06:54,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:06:48" (1/3) ... [2020-10-14 09:06:54,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a55f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:54, skipping insertion in model container [2020-10-14 09:06:54,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:50" (2/3) ... [2020-10-14 09:06:54,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a55f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:54, skipping insertion in model container [2020-10-14 09:06:54,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:54" (3/3) ... [2020-10-14 09:06:54,689 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-14 09:06:54,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:06:54,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-14 09:06:54,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-14 09:06:54,755 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:06:54,755 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:06:54,755 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:06:54,755 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:06:54,755 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:06:54,756 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:06:54,756 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:06:54,756 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:06:54,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states. [2020-10-14 09:06:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:06:54,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:54,826 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] [2020-10-14 09:06:54,826 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:54,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1856988322, now seen corresponding path program 1 times [2020-10-14 09:06:54,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:54,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126723986] [2020-10-14 09:06:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:55,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:57,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:58,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:00,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:00,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:07:00,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:07:00,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 09:07:00,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:00,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:07:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:07:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 09:07:00,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:07:02,135 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:07:02,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:02,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:02,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:02,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:02,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 09:07:02,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:02,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:02,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:07:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:02,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126723986] [2020-10-14 09:07:02,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:02,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:07:02,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050308942] [2020-10-14 09:07:02,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:07:02,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:02,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:07:02,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:07:02,271 INFO L87 Difference]: Start difference. First operand 1295 states. Second operand 6 states. [2020-10-14 09:07:04,107 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-14 09:07:19,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:19,954 INFO L93 Difference]: Finished difference Result 3575 states and 6084 transitions. [2020-10-14 09:07:19,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:07:19,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 09:07:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:19,991 INFO L225 Difference]: With dead ends: 3575 [2020-10-14 09:07:19,991 INFO L226 Difference]: Without dead ends: 2504 [2020-10-14 09:07:20,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:07:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2020-10-14 09:07:20,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2305. [2020-10-14 09:07:20,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-14 09:07:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3000 transitions. [2020-10-14 09:07:20,169 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3000 transitions. Word has length 56 [2020-10-14 09:07:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:20,170 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 3000 transitions. [2020-10-14 09:07:20,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:07:20,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3000 transitions. [2020-10-14 09:07:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:07:20,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:20,177 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] [2020-10-14 09:07:20,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:07:20,178 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:20,179 INFO L82 PathProgramCache]: Analyzing trace with hash -867241665, now seen corresponding path program 1 times [2020-10-14 09:07:20,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:20,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581513288] [2020-10-14 09:07:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:20,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:20,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:20,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:20,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:21,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:25,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:25,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:07:25,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:07:25,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 09:07:25,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:25,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:07:25,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:07:25,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:07:26,873 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:07:26,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:26,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:26,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:26,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:26,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:26,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:07:26,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:26,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:26,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:07:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:26,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581513288] [2020-10-14 09:07:26,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:26,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:07:26,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186614444] [2020-10-14 09:07:26,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:07:26,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:26,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:07:26,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:07:26,945 INFO L87 Difference]: Start difference. First operand 2305 states and 3000 transitions. Second operand 4 states. [2020-10-14 09:07:28,447 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-14 09:07:35,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:35,786 INFO L93 Difference]: Finished difference Result 3496 states and 4646 transitions. [2020-10-14 09:07:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:07:35,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 09:07:35,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:35,807 INFO L225 Difference]: With dead ends: 3496 [2020-10-14 09:07:35,807 INFO L226 Difference]: Without dead ends: 2531 [2020-10-14 09:07:35,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:07:35,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2020-10-14 09:07:35,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2525. [2020-10-14 09:07:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2525 states. [2020-10-14 09:07:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3313 transitions. [2020-10-14 09:07:35,943 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3313 transitions. Word has length 57 [2020-10-14 09:07:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:35,945 INFO L479 AbstractCegarLoop]: Abstraction has 2525 states and 3313 transitions. [2020-10-14 09:07:35,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:07:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3313 transitions. [2020-10-14 09:07:35,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:07:35,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:35,952 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] [2020-10-14 09:07:35,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:07:35,953 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:35,953 INFO L82 PathProgramCache]: Analyzing trace with hash -108202759, now seen corresponding path program 1 times [2020-10-14 09:07:35,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:35,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258920276] [2020-10-14 09:07:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:36,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:36,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:38,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:38,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:39,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:40,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:40,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:41,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:41,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:07:41,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:07:41,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:07:41,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:41,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:41,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:07:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:07:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 09:07:41,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:42,632 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:07:42,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:42,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:42,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:42,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 09:07:42,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:42,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:07:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:42,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258920276] [2020-10-14 09:07:42,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:42,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:07:42,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472212816] [2020-10-14 09:07:42,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:07:42,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:42,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:07:42,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:07:42,704 INFO L87 Difference]: Start difference. First operand 2525 states and 3313 transitions. Second operand 6 states. [2020-10-14 09:07:44,344 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-14 09:07:53,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:53,185 INFO L93 Difference]: Finished difference Result 4983 states and 6963 transitions. [2020-10-14 09:07:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:07:53,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-14 09:07:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:53,215 INFO L225 Difference]: With dead ends: 4983 [2020-10-14 09:07:53,216 INFO L226 Difference]: Without dead ends: 4478 [2020-10-14 09:07:53,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:07:53,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4478 states. [2020-10-14 09:07:53,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4478 to 3496. [2020-10-14 09:07:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3496 states. [2020-10-14 09:07:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 4674 transitions. [2020-10-14 09:07:53,352 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 4674 transitions. Word has length 57 [2020-10-14 09:07:53,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:53,352 INFO L479 AbstractCegarLoop]: Abstraction has 3496 states and 4674 transitions. [2020-10-14 09:07:53,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:07:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 4674 transitions. [2020-10-14 09:07:53,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:07:53,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:53,358 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] [2020-10-14 09:07:53,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:07:53,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:53,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1579807103, now seen corresponding path program 1 times [2020-10-14 09:07:53,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:53,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167992391] [2020-10-14 09:07:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:53,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:54,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:54,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:55,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:56,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:57,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:58,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:58,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:07:58,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:07:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:07:58,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:58,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:07:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:07:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 09:07:58,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:00,173 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:08:00,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:00,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:00,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:00,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 09:08:00,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:00,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:08:00,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:00,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167992391] [2020-10-14 09:08:00,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:00,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:08:00,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412198791] [2020-10-14 09:08:00,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:08:00,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:00,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:08:00,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:08:00,269 INFO L87 Difference]: Start difference. First operand 3496 states and 4674 transitions. Second operand 6 states. [2020-10-14 09:08:01,787 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-14 09:08:08,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:08,250 INFO L93 Difference]: Finished difference Result 7472 states and 10183 transitions. [2020-10-14 09:08:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:08:08,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-14 09:08:08,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:08,271 INFO L225 Difference]: With dead ends: 7472 [2020-10-14 09:08:08,271 INFO L226 Difference]: Without dead ends: 4916 [2020-10-14 09:08:08,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:08:08,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4916 states. [2020-10-14 09:08:08,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4916 to 4901. [2020-10-14 09:08:08,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4901 states. [2020-10-14 09:08:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4901 states to 4901 states and 6666 transitions. [2020-10-14 09:08:08,500 INFO L78 Accepts]: Start accepts. Automaton has 4901 states and 6666 transitions. Word has length 57 [2020-10-14 09:08:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:08,501 INFO L479 AbstractCegarLoop]: Abstraction has 4901 states and 6666 transitions. [2020-10-14 09:08:08,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:08:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4901 states and 6666 transitions. [2020-10-14 09:08:08,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:08:08,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:08,509 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] [2020-10-14 09:08:08,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:08:08,509 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:08,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:08,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1304463258, now seen corresponding path program 1 times [2020-10-14 09:08:08,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:08,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177984981] [2020-10-14 09:08:08,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:08,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:08,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:08,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:09,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:09,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:11,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:12,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:12,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:13,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:13,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:08:13,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:08:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:08:13,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:13,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:08:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:08:13,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:15,047 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:08:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:15,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:15,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:15,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:15,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:08:15,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:15,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:15,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:15,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177984981] [2020-10-14 09:08:15,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:15,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:15,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734114427] [2020-10-14 09:08:15,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:15,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:15,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:15,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:15,104 INFO L87 Difference]: Start difference. First operand 4901 states and 6666 transitions. Second operand 4 states. [2020-10-14 09:08:16,611 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-14 09:08:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:21,169 INFO L93 Difference]: Finished difference Result 8153 states and 11483 transitions. [2020-10-14 09:08:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:21,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-14 09:08:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:21,190 INFO L225 Difference]: With dead ends: 8153 [2020-10-14 09:08:21,191 INFO L226 Difference]: Without dead ends: 4857 [2020-10-14 09:08:21,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:21,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4857 states. [2020-10-14 09:08:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4857 to 4848. [2020-10-14 09:08:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4848 states. [2020-10-14 09:08:21,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 6819 transitions. [2020-10-14 09:08:21,456 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 6819 transitions. Word has length 59 [2020-10-14 09:08:21,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:21,458 INFO L479 AbstractCegarLoop]: Abstraction has 4848 states and 6819 transitions. [2020-10-14 09:08:21,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:21,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 6819 transitions. [2020-10-14 09:08:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:08:21,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:21,462 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] [2020-10-14 09:08:21,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:08:21,463 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:21,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:21,463 INFO L82 PathProgramCache]: Analyzing trace with hash -477493960, now seen corresponding path program 1 times [2020-10-14 09:08:21,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:21,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012404498] [2020-10-14 09:08:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:21,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:21,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:22,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:22,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:22,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:23,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:23,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:26,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:26,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:26,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:26,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:08:26,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:08:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:08:26,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:26,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:08:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:08:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 09:08:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:28,100 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:08:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:28,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:28,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:28,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:28,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:08:28,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:28,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:28,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:28,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:28,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012404498] [2020-10-14 09:08:28,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:28,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:08:28,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364514265] [2020-10-14 09:08:28,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:08:28,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:28,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:08:28,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:08:28,171 INFO L87 Difference]: Start difference. First operand 4848 states and 6819 transitions. Second operand 9 states. [2020-10-14 09:08:29,753 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 511 [2020-10-14 09:08:36,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:36,689 INFO L93 Difference]: Finished difference Result 11559 states and 16997 transitions. [2020-10-14 09:08:36,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 09:08:36,690 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-14 09:08:36,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:36,733 INFO L225 Difference]: With dead ends: 11559 [2020-10-14 09:08:36,734 INFO L226 Difference]: Without dead ends: 11555 [2020-10-14 09:08:36,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-14 09:08:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11555 states. [2020-10-14 09:08:37,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11555 to 4844. [2020-10-14 09:08:37,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4844 states. [2020-10-14 09:08:37,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 6814 transitions. [2020-10-14 09:08:37,042 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 6814 transitions. Word has length 59 [2020-10-14 09:08:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:37,042 INFO L479 AbstractCegarLoop]: Abstraction has 4844 states and 6814 transitions. [2020-10-14 09:08:37,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:08:37,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 6814 transitions. [2020-10-14 09:08:37,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:08:37,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:37,047 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] [2020-10-14 09:08:37,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:08:37,049 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:37,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:37,050 INFO L82 PathProgramCache]: Analyzing trace with hash 519506083, now seen corresponding path program 1 times [2020-10-14 09:08:37,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:37,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260895754] [2020-10-14 09:08:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:37,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:37,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:37,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:38,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:39,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:42,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:42,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:08:42,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:08:42,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:08:42,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:42,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:08:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:08:42,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 09:08:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:43,617 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:08:43,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:43,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:43,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:43,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:43,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:43,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 09:08:43,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:43,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:43,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:43,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:43,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:08:43,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:43,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260895754] [2020-10-14 09:08:43,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:43,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:08:43,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078154097] [2020-10-14 09:08:43,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:08:43,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:43,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:08:43,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:08:43,694 INFO L87 Difference]: Start difference. First operand 4844 states and 6814 transitions. Second operand 10 states. [2020-10-14 09:08:45,245 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 511 [2020-10-14 09:08:51,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:51,946 INFO L93 Difference]: Finished difference Result 14648 states and 21623 transitions. [2020-10-14 09:08:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 09:08:51,947 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-14 09:08:51,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:51,980 INFO L225 Difference]: With dead ends: 14648 [2020-10-14 09:08:51,980 INFO L226 Difference]: Without dead ends: 12722 [2020-10-14 09:08:51,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 09:08:52,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12722 states. [2020-10-14 09:08:52,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12722 to 4982. [2020-10-14 09:08:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4982 states. [2020-10-14 09:08:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4982 states to 4982 states and 7164 transitions. [2020-10-14 09:08:52,519 INFO L78 Accepts]: Start accepts. Automaton has 4982 states and 7164 transitions. Word has length 59 [2020-10-14 09:08:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:52,521 INFO L479 AbstractCegarLoop]: Abstraction has 4982 states and 7164 transitions. [2020-10-14 09:08:52,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:08:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4982 states and 7164 transitions. [2020-10-14 09:08:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 09:08:52,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:52,525 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] [2020-10-14 09:08:52,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:08:52,525 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:52,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:52,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1087890717, now seen corresponding path program 1 times [2020-10-14 09:08:52,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:52,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232650118] [2020-10-14 09:08:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:52,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:52,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:52,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:57,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:57,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:57,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:57,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:57,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 09:08:57,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:08:57,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:08:57,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:57,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:08:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:08:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 09:08:57,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:59,159 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:08:59,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:59,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:59,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:59,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:08:59,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:59,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:59,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:59,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:59,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232650118] [2020-10-14 09:08:59,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:59,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:08:59,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950281307] [2020-10-14 09:08:59,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:08:59,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:59,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:08:59,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:08:59,215 INFO L87 Difference]: Start difference. First operand 4982 states and 7164 transitions. Second operand 9 states. [2020-10-14 09:09:00,729 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 507 [2020-10-14 09:09:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:09,722 INFO L93 Difference]: Finished difference Result 29587 states and 44639 transitions. [2020-10-14 09:09:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 09:09:09,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-14 09:09:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:09,786 INFO L225 Difference]: With dead ends: 29587 [2020-10-14 09:09:09,786 INFO L226 Difference]: Without dead ends: 26078 [2020-10-14 09:09:09,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-14 09:09:09,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26078 states. [2020-10-14 09:09:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26078 to 9520. [2020-10-14 09:09:10,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9520 states. [2020-10-14 09:09:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9520 states to 9520 states and 14065 transitions. [2020-10-14 09:09:10,526 INFO L78 Accepts]: Start accepts. Automaton has 9520 states and 14065 transitions. Word has length 59 [2020-10-14 09:09:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:10,526 INFO L479 AbstractCegarLoop]: Abstraction has 9520 states and 14065 transitions. [2020-10-14 09:09:10,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:09:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 9520 states and 14065 transitions. [2020-10-14 09:09:10,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:09:10,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:10,530 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] [2020-10-14 09:09:10,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:09:10,530 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:10,530 INFO L82 PathProgramCache]: Analyzing trace with hash -226433332, now seen corresponding path program 1 times [2020-10-14 09:09:10,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:10,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531443405] [2020-10-14 09:09:10,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:10,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:11,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:15,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:15,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:09:15,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:09:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:09:15,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:15,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 09:09:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:09:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:17,018 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:09:17,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:17,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:17,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:17,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:17,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:09:17,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:17,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:17,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:17,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:17,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:09:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:17,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531443405] [2020-10-14 09:09:17,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:17,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:09:17,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578124427] [2020-10-14 09:09:17,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:09:17,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:17,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:09:17,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:17,079 INFO L87 Difference]: Start difference. First operand 9520 states and 14065 transitions. Second operand 4 states. [2020-10-14 09:09:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:22,110 INFO L93 Difference]: Finished difference Result 20259 states and 30441 transitions. [2020-10-14 09:09:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:09:22,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-14 09:09:22,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:22,134 INFO L225 Difference]: With dead ends: 20259 [2020-10-14 09:09:22,135 INFO L226 Difference]: Without dead ends: 12165 [2020-10-14 09:09:22,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:22,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12165 states. [2020-10-14 09:09:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12165 to 11062. [2020-10-14 09:09:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11062 states. [2020-10-14 09:09:22,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11062 states to 11062 states and 16215 transitions. [2020-10-14 09:09:22,950 INFO L78 Accepts]: Start accepts. Automaton has 11062 states and 16215 transitions. Word has length 60 [2020-10-14 09:09:22,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:22,951 INFO L479 AbstractCegarLoop]: Abstraction has 11062 states and 16215 transitions. [2020-10-14 09:09:22,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 11062 states and 16215 transitions. [2020-10-14 09:09:22,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:09:22,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:22,954 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] [2020-10-14 09:09:22,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:09:22,954 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:22,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:22,954 INFO L82 PathProgramCache]: Analyzing trace with hash -847180308, now seen corresponding path program 1 times [2020-10-14 09:09:22,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:22,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806781187] [2020-10-14 09:09:22,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:23,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:25,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:26,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:26,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:09:26,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:09:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3201 [2020-10-14 09:09:26,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:26,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 09:09:26,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:09:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:27,608 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:09:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:27,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:27,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:27,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:27,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:09:27,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:27,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:27,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806781187] [2020-10-14 09:09:27,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:27,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:09:27,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275517964] [2020-10-14 09:09:27,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:09:27,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:27,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:09:27,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:27,650 INFO L87 Difference]: Start difference. First operand 11062 states and 16215 transitions. Second operand 4 states. [2020-10-14 09:09:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:32,029 INFO L93 Difference]: Finished difference Result 22394 states and 33236 transitions. [2020-10-14 09:09:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:09:32,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-14 09:09:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:32,054 INFO L225 Difference]: With dead ends: 22394 [2020-10-14 09:09:32,054 INFO L226 Difference]: Without dead ends: 12523 [2020-10-14 09:09:32,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12523 states. [2020-10-14 09:09:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12523 to 12521. [2020-10-14 09:09:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12521 states. [2020-10-14 09:09:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12521 states to 12521 states and 18066 transitions. [2020-10-14 09:09:32,891 INFO L78 Accepts]: Start accepts. Automaton has 12521 states and 18066 transitions. Word has length 60 [2020-10-14 09:09:32,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:32,891 INFO L479 AbstractCegarLoop]: Abstraction has 12521 states and 18066 transitions. [2020-10-14 09:09:32,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:32,891 INFO L276 IsEmpty]: Start isEmpty. Operand 12521 states and 18066 transitions. [2020-10-14 09:09:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 09:09:32,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:32,893 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] [2020-10-14 09:09:32,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:09:32,893 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:32,894 INFO L82 PathProgramCache]: Analyzing trace with hash -260728731, now seen corresponding path program 1 times [2020-10-14 09:09:32,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:32,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780777306] [2020-10-14 09:09:32,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:32,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:33,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:34,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:34,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:37,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:37,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 09:09:37,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:09:37,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:09:37,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:37,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:09:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:09:37,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 09:09:37,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:39,589 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:09:39,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:39,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:39,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:39,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:39,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:39,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:09:39,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:39,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:39,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:39,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780777306] [2020-10-14 09:09:39,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:39,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:09:39,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822775868] [2020-10-14 09:09:39,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:09:39,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:39,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:09:39,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:09:39,641 INFO L87 Difference]: Start difference. First operand 12521 states and 18066 transitions. Second operand 9 states. [2020-10-14 09:09:41,187 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 516 [2020-10-14 09:09:46,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:46,989 INFO L93 Difference]: Finished difference Result 25263 states and 36801 transitions. [2020-10-14 09:09:46,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:09:46,990 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-14 09:09:46,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:47,018 INFO L225 Difference]: With dead ends: 25263 [2020-10-14 09:09:47,018 INFO L226 Difference]: Without dead ends: 23258 [2020-10-14 09:09:47,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:09:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23258 states. [2020-10-14 09:09:48,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23258 to 12520. [2020-10-14 09:09:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12520 states. [2020-10-14 09:09:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12520 states to 12520 states and 18064 transitions. [2020-10-14 09:09:48,120 INFO L78 Accepts]: Start accepts. Automaton has 12520 states and 18064 transitions. Word has length 61 [2020-10-14 09:09:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:48,120 INFO L479 AbstractCegarLoop]: Abstraction has 12520 states and 18064 transitions. [2020-10-14 09:09:48,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:09:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 12520 states and 18064 transitions. [2020-10-14 09:09:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 09:09:48,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:48,123 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] [2020-10-14 09:09:48,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:09:48,123 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:48,123 INFO L82 PathProgramCache]: Analyzing trace with hash -13406287, now seen corresponding path program 1 times [2020-10-14 09:09:48,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:48,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168480194] [2020-10-14 09:09:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:48,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:48,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:48,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:48,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:49,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:49,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:53,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:53,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 09:09:53,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:09:53,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4961 [2020-10-14 09:09:53,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:53,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:09:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:09:53,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:09:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:54,636 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:09:54,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:54,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:54,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:54,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:54,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:54,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:09:54,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:54,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:54,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:54,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168480194] [2020-10-14 09:09:54,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:54,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:09:54,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823684113] [2020-10-14 09:09:54,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:09:54,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:54,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:09:54,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:09:54,681 INFO L87 Difference]: Start difference. First operand 12520 states and 18064 transitions. Second operand 9 states. [2020-10-14 09:09:56,188 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-14 09:10:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:04,194 INFO L93 Difference]: Finished difference Result 35353 states and 51547 transitions. [2020-10-14 09:10:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 09:10:04,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 09:10:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:04,231 INFO L225 Difference]: With dead ends: 35353 [2020-10-14 09:10:04,231 INFO L226 Difference]: Without dead ends: 35349 [2020-10-14 09:10:04,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-14 09:10:04,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35349 states. [2020-10-14 09:10:05,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35349 to 12516. [2020-10-14 09:10:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12516 states. [2020-10-14 09:10:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12516 states to 12516 states and 18059 transitions. [2020-10-14 09:10:05,256 INFO L78 Accepts]: Start accepts. Automaton has 12516 states and 18059 transitions. Word has length 62 [2020-10-14 09:10:05,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:05,256 INFO L479 AbstractCegarLoop]: Abstraction has 12516 states and 18059 transitions. [2020-10-14 09:10:05,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:10:05,256 INFO L276 IsEmpty]: Start isEmpty. Operand 12516 states and 18059 transitions. [2020-10-14 09:10:05,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 09:10:05,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:05,258 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] [2020-10-14 09:10:05,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:10:05,259 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:05,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1407962833, now seen corresponding path program 1 times [2020-10-14 09:10:05,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:05,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280676387] [2020-10-14 09:10:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:05,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:05,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:05,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:07,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:10,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:10,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 09:10:10,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:10:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 09:10:10,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:10,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:10:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:10:10,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 09:10:10,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:11,840 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:10:11,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:11,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:11,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:11,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:11,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:11,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:10:11,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:11,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:11,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:11,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:11,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280676387] [2020-10-14 09:10:11,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:11,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:10:11,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6096997] [2020-10-14 09:10:11,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:10:11,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:11,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:10:11,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:10:11,890 INFO L87 Difference]: Start difference. First operand 12516 states and 18059 transitions. Second operand 9 states. [2020-10-14 09:10:13,619 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 510 [2020-10-14 09:10:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:21,021 INFO L93 Difference]: Finished difference Result 22964 states and 33094 transitions. [2020-10-14 09:10:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:10:21,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-14 09:10:21,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:21,043 INFO L225 Difference]: With dead ends: 22964 [2020-10-14 09:10:21,043 INFO L226 Difference]: Without dead ends: 22952 [2020-10-14 09:10:21,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:10:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22952 states. [2020-10-14 09:10:22,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22952 to 12504. [2020-10-14 09:10:22,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12504 states. [2020-10-14 09:10:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12504 states to 12504 states and 18046 transitions. [2020-10-14 09:10:22,092 INFO L78 Accepts]: Start accepts. Automaton has 12504 states and 18046 transitions. Word has length 62 [2020-10-14 09:10:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:22,093 INFO L479 AbstractCegarLoop]: Abstraction has 12504 states and 18046 transitions. [2020-10-14 09:10:22,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:10:22,093 INFO L276 IsEmpty]: Start isEmpty. Operand 12504 states and 18046 transitions. [2020-10-14 09:10:22,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:10:22,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:22,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:22,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:10:22,098 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:22,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:22,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1309328499, now seen corresponding path program 1 times [2020-10-14 09:10:22,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:22,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814236267] [2020-10-14 09:10:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:22,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:25,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:25,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:10:25,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:10:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3436 [2020-10-14 09:10:25,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:25,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 09:10:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 09:10:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:27,024 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-14 09:10:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:10:27,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:27,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:27,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:27,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:27,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814236267] [2020-10-14 09:10:27,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:27,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:10:27,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429214054] [2020-10-14 09:10:27,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:10:27,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:27,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:10:27,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:27,069 INFO L87 Difference]: Start difference. First operand 12504 states and 18046 transitions. Second operand 4 states. [2020-10-14 09:10:28,546 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-14 09:10:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:34,029 INFO L93 Difference]: Finished difference Result 34034 states and 49620 transitions. [2020-10-14 09:10:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:10:34,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 09:10:34,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:34,056 INFO L225 Difference]: With dead ends: 34034 [2020-10-14 09:10:34,057 INFO L226 Difference]: Without dead ends: 23063 [2020-10-14 09:10:34,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:10:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23063 states. [2020-10-14 09:10:37,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23063 to 23061. [2020-10-14 09:10:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23061 states. [2020-10-14 09:10:37,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23061 states to 23061 states and 33166 transitions. [2020-10-14 09:10:37,110 INFO L78 Accepts]: Start accepts. Automaton has 23061 states and 33166 transitions. Word has length 68 [2020-10-14 09:10:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:37,110 INFO L479 AbstractCegarLoop]: Abstraction has 23061 states and 33166 transitions. [2020-10-14 09:10:37,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:10:37,110 INFO L276 IsEmpty]: Start isEmpty. Operand 23061 states and 33166 transitions. [2020-10-14 09:10:37,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:10:37,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:37,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:37,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:10:37,114 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:37,115 INFO L82 PathProgramCache]: Analyzing trace with hash 2039607896, now seen corresponding path program 1 times [2020-10-14 09:10:37,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:37,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951654572] [2020-10-14 09:10:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:37,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:37,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:37,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:37,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking...