/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:39:44,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:39:44,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:39:44,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:39:44,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:39:44,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:39:44,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:39:44,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:39:44,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:39:44,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:39:44,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:39:44,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:39:44,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:39:44,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:39:44,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:39:44,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:39:44,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:39:44,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:39:44,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:39:44,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:39:44,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:39:44,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:39:44,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:39:44,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:39:44,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:39:44,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:39:44,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:39:44,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:39:44,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:39:44,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:39:44,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:39:44,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:39:44,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:39:44,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:39:44,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:39:44,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:39:44,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:39:44,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:39:44,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:39:44,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:39:44,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:39:44,144 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 01:39:44,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:39:44,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:39:44,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:39:44,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:39:44,184 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:39:44,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:39:44,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:39:44,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:39:44,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:39:44,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:39:44,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:39:44,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:39:44,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:39:44,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:39:44,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:39:44,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:39:44,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:39:44,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:39:44,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:39:44,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:39:44,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:39:44,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:39:44,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:39:44,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:39:44,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:39:44,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:39:44,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:39:44,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:39:44,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:39:44,190 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 01:39:44,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:39:44,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:39:44,543 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:39:44,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:39:44,546 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:39:44,546 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label44.c [2020-10-14 01:39:44,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4c78719/ef558a79cf4b4a0bbab1e60c64545cd3/FLAG78aba9323 [2020-10-14 01:39:45,516 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:39:45,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label44.c [2020-10-14 01:39:45,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4c78719/ef558a79cf4b4a0bbab1e60c64545cd3/FLAG78aba9323 [2020-10-14 01:39:45,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4c78719/ef558a79cf4b4a0bbab1e60c64545cd3 [2020-10-14 01:39:45,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:39:45,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:39:45,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:39:45,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:39:45,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:39:45,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:39:45" (1/1) ... [2020-10-14 01:39:45,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b15dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:39:45, skipping insertion in model container [2020-10-14 01:39:45,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:39:45" (1/1) ... [2020-10-14 01:39:46,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:39:46,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:39:48,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:39:48,474 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:39:49,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:39:49,631 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:39:49,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:39:49 WrapperNode [2020-10-14 01:39:49,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:39:49,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:39:49,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:39:49,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:39:49,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:39:49" (1/1) ... [2020-10-14 01:39:49,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:39:49" (1/1) ... [2020-10-14 01:39:49,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:39:49" (1/1) ... [2020-10-14 01:39:49,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:39:49" (1/1) ... [2020-10-14 01:39:49,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:39:49" (1/1) ... [2020-10-14 01:39:49,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:39:49" (1/1) ... [2020-10-14 01:39:49,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:39:49" (1/1) ... [2020-10-14 01:39:50,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:39:50,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:39:50,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:39:50,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:39:50,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:39:49" (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 01:39:50,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:39:50,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:39:50,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:39:50,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:39:50,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:39:50,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:39:50,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:39:50,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:39:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:39:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:39:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:39:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:39:50,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:39:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:39:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:39:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:39:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:39:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:39:50,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:39:57,802 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:39:57,802 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:39:57,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:39:57 BoogieIcfgContainer [2020-10-14 01:39:57,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:39:57,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:39:57,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:39:57,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:39:57,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:39:45" (1/3) ... [2020-10-14 01:39:57,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41014b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:39:57, skipping insertion in model container [2020-10-14 01:39:57,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:39:49" (2/3) ... [2020-10-14 01:39:57,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41014b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:39:57, skipping insertion in model container [2020-10-14 01:39:57,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:39:57" (3/3) ... [2020-10-14 01:39:57,822 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label44.c [2020-10-14 01:39:57,833 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:39:57,841 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:39:57,856 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:39:57,888 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:39:57,888 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:39:57,888 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:39:57,889 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:39:57,889 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:39:57,889 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:39:57,889 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:39:57,889 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:39:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:39:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2020-10-14 01:39:57,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:39:57,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:57,982 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:39:57,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:39:57,990 INFO L82 PathProgramCache]: Analyzing trace with hash -589424936, now seen corresponding path program 1 times [2020-10-14 01:39:58,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:39:58,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773107991] [2020-10-14 01:39:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:39:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:39:59,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:04,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:04,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 963 [2020-10-14 01:40:04,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:40:04,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5187 [2020-10-14 01:40:04,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:04,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:40:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:40:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 957 [2020-10-14 01:40:04,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:40:05,351 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:40:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:40:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:05,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:05,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:40:05,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:40:05,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:05,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:40:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:40:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:40:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:40:06,240 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 01:40:06,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773107991] [2020-10-14 01:40:06,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:40:06,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:40:06,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233065921] [2020-10-14 01:40:06,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:40:06,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:40:06,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:40:06,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:40:06,270 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 01:40:06,465 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:40:19,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:40:19,296 INFO L93 Difference]: Finished difference Result 3765 states and 7006 transitions. [2020-10-14 01:40:19,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:40:19,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 947 [2020-10-14 01:40:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:40:19,344 INFO L225 Difference]: With dead ends: 3765 [2020-10-14 01:40:19,344 INFO L226 Difference]: Without dead ends: 2386 [2020-10-14 01:40:19,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:40:19,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2020-10-14 01:40:19,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2373. [2020-10-14 01:40:19,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-14 01:40:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3971 transitions. [2020-10-14 01:40:19,539 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3971 transitions. Word has length 947 [2020-10-14 01:40:19,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:40:19,543 INFO L479 AbstractCegarLoop]: Abstraction has 2373 states and 3971 transitions. [2020-10-14 01:40:19,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:40:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3971 transitions. [2020-10-14 01:40:19,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2020-10-14 01:40:19,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:40:19,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:19,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:40:19,580 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:40:19,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:40:19,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1483498581, now seen corresponding path program 1 times [2020-10-14 01:40:19,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:40:19,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297152122] [2020-10-14 01:40:19,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:40:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:20,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:21,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:25,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:25,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 977 [2020-10-14 01:40:25,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:40:25,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 01:40:25,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:25,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:40:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:40:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:40:25,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 01:40:25,697 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:40:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:40:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:25,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:25,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:25,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:40:25,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:25,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:40:25,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:25,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:40:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:40:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:40:25,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 01:40:25,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:40:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:25,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:25,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:25,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:40:25,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:25,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 01:40:25,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:25,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:40:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:40:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:40:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:40:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:40:26,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297152122] [2020-10-14 01:40:26,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:40:26,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:40:26,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090149902] [2020-10-14 01:40:26,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:40:26,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:40:26,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:40:26,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:40:26,658 INFO L87 Difference]: Start difference. First operand 2373 states and 3971 transitions. Second operand 8 states. [2020-10-14 01:40:26,805 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:40:27,027 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 01:40:27,573 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 01:40:50,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:40:50,160 INFO L93 Difference]: Finished difference Result 9191 states and 15695 transitions. [2020-10-14 01:40:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 01:40:50,161 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 959 [2020-10-14 01:40:50,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:40:50,206 INFO L225 Difference]: With dead ends: 9191 [2020-10-14 01:40:50,207 INFO L226 Difference]: Without dead ends: 6824 [2020-10-14 01:40:50,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:40:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6824 states. [2020-10-14 01:40:50,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6824 to 6703. [2020-10-14 01:40:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6703 states. [2020-10-14 01:40:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6703 states to 6703 states and 10486 transitions. [2020-10-14 01:40:50,464 INFO L78 Accepts]: Start accepts. Automaton has 6703 states and 10486 transitions. Word has length 959 [2020-10-14 01:40:50,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:40:50,466 INFO L479 AbstractCegarLoop]: Abstraction has 6703 states and 10486 transitions. [2020-10-14 01:40:50,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:40:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6703 states and 10486 transitions. [2020-10-14 01:40:50,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-10-14 01:40:50,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:40:50,504 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:50,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:40:50,505 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:40:50,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:40:50,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1243761524, now seen corresponding path program 1 times [2020-10-14 01:40:50,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:40:50,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706338142] [2020-10-14 01:40:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:40:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:50,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:53,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:55,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:55,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 991 [2020-10-14 01:40:55,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:40:55,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-14 01:40:55,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:55,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:40:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 01:40:55,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:40:55,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:40:56,468 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:40:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:40:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:56,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:56,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:56,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:40:56,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:56,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:40:56,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:56,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:40:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:40:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:40:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:40:56,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:40:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:56,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:56,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:40:56,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 01:40:56,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:56,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:40:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:40:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:40:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:40:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 01:40:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:56,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:56,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:40:56,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:56,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 01:40:56,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:56,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:40:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:40:56,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:40:56,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:40:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:40:57,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706338142] [2020-10-14 01:40:57,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:40:57,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:40:57,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122860484] [2020-10-14 01:40:57,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:40:57,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:40:57,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:40:57,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:40:57,856 INFO L87 Difference]: Start difference. First operand 6703 states and 10486 transitions. Second operand 7 states. [2020-10-14 01:40:58,071 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:40:58,316 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:41:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:41:26,651 INFO L93 Difference]: Finished difference Result 27145 states and 44344 transitions. [2020-10-14 01:41:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:41:26,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 971 [2020-10-14 01:41:26,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:41:26,745 INFO L225 Difference]: With dead ends: 27145 [2020-10-14 01:41:26,746 INFO L226 Difference]: Without dead ends: 20448 [2020-10-14 01:41:26,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:41:26,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20448 states. [2020-10-14 01:41:27,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20448 to 20409. [2020-10-14 01:41:27,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20409 states. [2020-10-14 01:41:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20409 states to 20409 states and 32559 transitions. [2020-10-14 01:41:27,397 INFO L78 Accepts]: Start accepts. Automaton has 20409 states and 32559 transitions. Word has length 971 [2020-10-14 01:41:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:41:27,398 INFO L479 AbstractCegarLoop]: Abstraction has 20409 states and 32559 transitions. [2020-10-14 01:41:27,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:41:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 20409 states and 32559 transitions. [2020-10-14 01:41:27,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-10-14 01:41:27,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:41:27,518 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:27,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:41:27,519 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:41:27,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:41:27,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1001095632, now seen corresponding path program 1 times [2020-10-14 01:41:27,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:41:27,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054612896] [2020-10-14 01:41:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:41:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:27,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:32,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:32,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 998 [2020-10-14 01:41:32,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:41:32,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-14 01:41:32,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:32,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:41:32,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:41:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:41:32,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:41:33,352 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:41:33,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:41:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:33,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:33,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:33,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:41:33,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:33,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:41:33,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:33,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:41:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:41:33,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:41:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:41:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:33,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:33,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:33,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:41:33,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 01:41:33,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:33,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:41:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:41:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:41:33,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:41:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:33,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:33,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:33,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:41:33,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:33,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 01:41:33,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:33,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:41:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:41:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:41:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:41:33,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054612896] [2020-10-14 01:41:33,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:41:33,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:41:33,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074621549] [2020-10-14 01:41:33,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:41:33,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:41:33,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:41:33,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:41:33,992 INFO L87 Difference]: Start difference. First operand 20409 states and 32559 transitions. Second operand 7 states. [2020-10-14 01:41:34,203 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:41:34,614 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:41:59,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:41:59,762 INFO L93 Difference]: Finished difference Result 82043 states and 156645 transitions. [2020-10-14 01:41:59,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:41:59,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 978 [2020-10-14 01:41:59,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:42:00,092 INFO L225 Difference]: With dead ends: 82043 [2020-10-14 01:42:00,093 INFO L226 Difference]: Without dead ends: 61640 [2020-10-14 01:42:00,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:42:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61640 states. [2020-10-14 01:42:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61640 to 61473. [2020-10-14 01:42:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61473 states. [2020-10-14 01:42:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61473 states to 61473 states and 105095 transitions. [2020-10-14 01:42:03,514 INFO L78 Accepts]: Start accepts. Automaton has 61473 states and 105095 transitions. Word has length 978 [2020-10-14 01:42:03,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:42:03,514 INFO L479 AbstractCegarLoop]: Abstraction has 61473 states and 105095 transitions. [2020-10-14 01:42:03,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:42:03,515 INFO L276 IsEmpty]: Start isEmpty. Operand 61473 states and 105095 transitions. [2020-10-14 01:42:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-14 01:42:03,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:42:03,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:03,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:42:03,858 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:42:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:42:03,859 INFO L82 PathProgramCache]: Analyzing trace with hash 311148856, now seen corresponding path program 1 times [2020-10-14 01:42:03,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:42:03,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723708824] [2020-10-14 01:42:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:42:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:03,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:04,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:08,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:09,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:09,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1002 [2020-10-14 01:42:09,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:42:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-14 01:42:09,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:09,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 01:42:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:42:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 01:42:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:42:09,705 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:42:09,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:42:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:09,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:09,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:42:09,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:42:09,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:09,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:42:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:42:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:42:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:42:09,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:42:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:09,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:09,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:09,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:09,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:42:09,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:42:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 01:42:09,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:09,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:09,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:42:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:42:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:42:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:42:09,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:42:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:09,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:09,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:42:09,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:09,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 01:42:09,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:09,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:42:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:42:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:42:09,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:42:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 01:42:10,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723708824] [2020-10-14 01:42:10,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:42:10,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:42:10,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119449903] [2020-10-14 01:42:10,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:42:10,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:42:10,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:42:10,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:42:10,303 INFO L87 Difference]: Start difference. First operand 61473 states and 105095 transitions. Second operand 8 states. [2020-10-14 01:42:10,454 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:42:11,015 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:42:26,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:42:26,530 INFO L93 Difference]: Finished difference Result 125368 states and 235008 transitions. [2020-10-14 01:42:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:42:26,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 982 [2020-10-14 01:42:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:42:26,976 INFO L225 Difference]: With dead ends: 125368 [2020-10-14 01:42:26,977 INFO L226 Difference]: Without dead ends: 64045 [2020-10-14 01:42:27,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-14 01:42:27,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64045 states. [2020-10-14 01:42:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64045 to 62957. [2020-10-14 01:42:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62957 states. [2020-10-14 01:42:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62957 states to 62957 states and 106267 transitions. [2020-10-14 01:42:33,542 INFO L78 Accepts]: Start accepts. Automaton has 62957 states and 106267 transitions. Word has length 982 [2020-10-14 01:42:33,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:42:33,543 INFO L479 AbstractCegarLoop]: Abstraction has 62957 states and 106267 transitions. [2020-10-14 01:42:33,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:42:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 62957 states and 106267 transitions. [2020-10-14 01:42:33,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-14 01:42:33,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:42:33,822 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:33,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:42:33,823 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:42:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:42:33,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1794501597, now seen corresponding path program 1 times [2020-10-14 01:42:33,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:42:33,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621812868] [2020-10-14 01:42:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:42:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:34,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:39,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:39,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1012 [2020-10-14 01:42:39,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:42:39,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-14 01:42:39,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:39,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:42:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 01:42:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 01:42:39,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:42:39,356 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:42:39,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:42:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:39,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:39,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:39,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:42:39,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:39,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:42:39,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:39,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:42:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:42:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:42:39,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:42:39,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:42:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:39,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:39,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:42:39,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:39,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:42:39,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:39,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:42:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:42:39,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:42:39,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:42:39,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:42:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:39,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:39,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:39,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:42:39,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:39,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 01:42:39,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:39,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:42:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:42:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:42:39,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:42:39,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 01:42:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:39,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:39,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:42:39,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:42:39,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:39,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:42:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 01:42:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:42:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:42:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 41 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 01:42:40,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621812868] [2020-10-14 01:42:40,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:42:40,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:42:40,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899313189] [2020-10-14 01:42:40,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:42:40,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:42:40,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:42:40,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:42:40,228 INFO L87 Difference]: Start difference. First operand 62957 states and 106267 transitions. Second operand 7 states. [2020-10-14 01:42:40,360 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 01:42:42,847 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:42:58,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:42:58,924 INFO L93 Difference]: Finished difference Result 190301 states and 358771 transitions. [2020-10-14 01:42:58,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:42:58,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 990 [2020-10-14 01:42:58,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:42:59,658 INFO L225 Difference]: With dead ends: 190301 [2020-10-14 01:42:59,658 INFO L226 Difference]: Without dead ends: 127350 [2020-10-14 01:42:59,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 01:42:59,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127350 states. [2020-10-14 01:43:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127350 to 126668. [2020-10-14 01:43:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126668 states. [2020-10-14 01:43:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126668 states to 126668 states and 242280 transitions. [2020-10-14 01:43:03,600 INFO L78 Accepts]: Start accepts. Automaton has 126668 states and 242280 transitions. Word has length 990 [2020-10-14 01:43:03,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:43:03,601 INFO L479 AbstractCegarLoop]: Abstraction has 126668 states and 242280 transitions. [2020-10-14 01:43:03,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:43:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand 126668 states and 242280 transitions. [2020-10-14 01:43:04,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-14 01:43:04,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:43:04,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:04,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:43:04,319 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:43:04,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:43:04,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1051165555, now seen corresponding path program 1 times [2020-10-14 01:43:04,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:43:04,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450433995] [2020-10-14 01:43:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:43:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:04,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:12,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:12,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-14 01:43:12,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:43:12,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8048 [2020-10-14 01:43:12,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:12,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:43:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:43:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 01:43:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:12,713 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:43:12,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:43:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:12,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:12,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:43:12,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:12,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:43:12,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:12,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:43:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:43:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:43:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:43:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:12,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:12,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:12,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 01:43:12,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:12,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 01:43:12,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:12,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:43:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:43:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 01:43:12,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:43:12,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 01:43:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:12,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:12,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:12,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:43:12,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:43:12,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:12,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:43:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 01:43:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:43:12,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:43:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 01:43:13,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450433995] [2020-10-14 01:43:13,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:43:13,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:43:13,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964252115] [2020-10-14 01:43:13,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:43:13,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:43:13,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:43:13,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:43:13,655 INFO L87 Difference]: Start difference. First operand 126668 states and 242280 transitions. Second operand 8 states. [2020-10-14 01:43:13,796 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129