/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 SingleStatement --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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:00:59,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:00:59,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:00:59,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:00:59,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:00:59,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:00:59,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:00:59,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:00:59,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:00:59,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:00:59,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:00:59,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:00:59,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:00:59,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:00:59,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:00:59,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:00:59,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:00:59,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:00:59,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:00:59,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:00:59,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:00:59,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:00:59,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:00:59,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:00:59,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:00:59,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:00:59,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:00:59,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:00:59,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:00:59,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:00:59,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:00:59,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:00:59,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:00:59,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:00:59,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:00:59,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:00:59,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:00:59,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:00:59,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:00:59,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:00:59,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:00:59,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:00:59,194 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:00:59,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:00:59,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:00:59,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:00:59,197 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:00:59,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:00:59,197 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:00:59,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:00:59,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:00:59,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:00:59,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:00:59,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:00:59,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:00:59,200 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:00:59,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:00:59,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:00:59,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:00:59,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:00:59,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:00:59,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:00:59,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:00:59,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:59,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:00:59,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:00:59,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:00:59,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:00:59,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:00:59,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:00:59,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:00:59,204 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 -> SingleStatement 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=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:00:59,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:00:59,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:00:59,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:00:59,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:00:59,694 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:00:59,696 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 09:00:59,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a5c3ba05/a55de58cd4ff4b35a7a5534cd284318c/FLAG9f5162586 [2020-09-25 09:01:00,383 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:00,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 09:01:00,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a5c3ba05/a55de58cd4ff4b35a7a5534cd284318c/FLAG9f5162586 [2020-09-25 09:01:00,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a5c3ba05/a55de58cd4ff4b35a7a5534cd284318c [2020-09-25 09:01:00,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:00,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:00,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:00,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:00,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:00,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:00" (1/1) ... [2020-09-25 09:01:00,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:00, skipping insertion in model container [2020-09-25 09:01:00,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:00" (1/1) ... [2020-09-25 09:01:00,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:00,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:01,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:01,170 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:01,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:01,406 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:01,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:01 WrapperNode [2020-09-25 09:01:01,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:01,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:01,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:01,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:01,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:01" (1/1) ... [2020-09-25 09:01:01,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:01" (1/1) ... [2020-09-25 09:01:01,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:01" (1/1) ... [2020-09-25 09:01:01,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:01" (1/1) ... [2020-09-25 09:01:01,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:01" (1/1) ... [2020-09-25 09:01:01,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:01" (1/1) ... [2020-09-25 09:01:01,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:01" (1/1) ... [2020-09-25 09:01:01,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:01,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:01,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:01,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:01,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:01,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:01,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:01,613 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:01,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:02,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:02,983 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:02,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:02 BoogieIcfgContainer [2020-09-25 09:01:02,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:02,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:02,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:02,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:02,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:00" (1/3) ... [2020-09-25 09:01:03,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:03, skipping insertion in model container [2020-09-25 09:01:03,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:01" (2/3) ... [2020-09-25 09:01:03,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:03, skipping insertion in model container [2020-09-25 09:01:03,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:02" (3/3) ... [2020-09-25 09:01:03,003 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2020-09-25 09:01:03,015 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:03,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:03,048 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:03,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:03,083 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:03,083 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:03,083 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:03,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:03,084 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:03,084 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:03,084 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:03,116 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:01:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 09:01:03,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:03,137 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] [2020-09-25 09:01:03,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:03,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:03,144 INFO L82 PathProgramCache]: Analyzing trace with hash 948138895, now seen corresponding path program 1 times [2020-09-25 09:01:03,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:03,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316023275] [2020-09-25 09:01:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:03,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:03,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:04,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:06,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:08,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:08,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 09:01:08,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:08,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 09:01:08,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:08,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:01:08,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 09:01:08,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:01:08,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:08,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:08,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:08,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:08,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:08,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:01:08,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:08,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:08,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:08,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:08,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316023275] [2020-09-25 09:01:08,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:08,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:01:08,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469391316] [2020-09-25 09:01:08,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:01:08,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:08,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:01:08,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:01:08,775 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:01:10,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:10,907 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 09:01:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:01:10,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-09-25 09:01:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:10,948 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 09:01:10,948 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 09:01:10,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:10,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 09:01:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 09:01:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:01:11,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 09:01:11,103 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 112 [2020-09-25 09:01:11,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:11,104 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 09:01:11,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:01:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 09:01:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 09:01:11,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:11,116 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:01:11,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:01:11,116 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:11,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:11,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2029057097, now seen corresponding path program 1 times [2020-09-25 09:01:11,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:11,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369510615] [2020-09-25 09:01:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:11,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:11,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:11,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:11,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:11,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:14,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:14,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:15,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:16,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:16,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 09:01:16,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:16,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:01:16,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:16,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:16,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:01:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 09:01:16,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:16,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:16,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:16,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:01:16,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:16,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:16,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:16,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:16,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:16,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:16,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:16,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:16,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:16,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 09:01:16,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:16,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:16,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:01:16,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369510615] [2020-09-25 09:01:16,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:16,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:01:16,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091070751] [2020-09-25 09:01:16,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:01:16,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:16,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:01:16,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:16,473 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 6 states. [2020-09-25 09:01:18,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:18,333 INFO L93 Difference]: Finished difference Result 1583 states and 1971 transitions. [2020-09-25 09:01:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:01:18,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-09-25 09:01:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:18,340 INFO L225 Difference]: With dead ends: 1583 [2020-09-25 09:01:18,340 INFO L226 Difference]: Without dead ends: 1004 [2020-09-25 09:01:18,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:18,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-09-25 09:01:18,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 962. [2020-09-25 09:01:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-09-25 09:01:18,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1170 transitions. [2020-09-25 09:01:18,390 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1170 transitions. Word has length 133 [2020-09-25 09:01:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:18,391 INFO L479 AbstractCegarLoop]: Abstraction has 962 states and 1170 transitions. [2020-09-25 09:01:18,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:01:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1170 transitions. [2020-09-25 09:01:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 09:01:18,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:18,400 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:01:18,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:18,400 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:18,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:18,401 INFO L82 PathProgramCache]: Analyzing trace with hash -771284323, now seen corresponding path program 1 times [2020-09-25 09:01:18,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:18,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972947457] [2020-09-25 09:01:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:18,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:21,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:23,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 09:01:23,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:01:23,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:01:23,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:23,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:23,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:01:23,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:01:23,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:01:23,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:23,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:23,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:23,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:23,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 09:01:23,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:23,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:23,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:01:23,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:23,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:01:23,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:23,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:23,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:23,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:01:23,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:23,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 09:01:23,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:23,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:23,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:23,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:23,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972947457] [2020-09-25 09:01:23,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:23,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:01:23,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624268149] [2020-09-25 09:01:23,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:01:23,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:23,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:01:23,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:23,821 INFO L87 Difference]: Start difference. First operand 962 states and 1170 transitions. Second operand 8 states. [2020-09-25 09:01:26,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:26,336 INFO L93 Difference]: Finished difference Result 2342 states and 2893 transitions. [2020-09-25 09:01:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 09:01:26,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-09-25 09:01:26,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:26,346 INFO L225 Difference]: With dead ends: 2342 [2020-09-25 09:01:26,347 INFO L226 Difference]: Without dead ends: 1404 [2020-09-25 09:01:26,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:01:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-09-25 09:01:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1268. [2020-09-25 09:01:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2020-09-25 09:01:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1537 transitions. [2020-09-25 09:01:26,397 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1537 transitions. Word has length 134 [2020-09-25 09:01:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:26,397 INFO L479 AbstractCegarLoop]: Abstraction has 1268 states and 1537 transitions. [2020-09-25 09:01:26,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:01:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1537 transitions. [2020-09-25 09:01:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 09:01:26,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:26,403 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:01:26,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:26,404 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:26,404 INFO L82 PathProgramCache]: Analyzing trace with hash 694207572, now seen corresponding path program 1 times [2020-09-25 09:01:26,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:26,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113746798] [2020-09-25 09:01:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:26,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:26,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:28,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:29,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:31,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 09:01:31,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:31,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 09:01:31,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:31,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:31,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:01:31,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 09:01:31,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:31,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:31,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:31,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:01:31,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:31,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:31,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:01:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:31,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:31,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:31,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:31,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 09:01:31,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:31,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:01:31,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:31,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113746798] [2020-09-25 09:01:31,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:31,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:01:31,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015334861] [2020-09-25 09:01:31,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:31,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:31,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:31,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:31,780 INFO L87 Difference]: Start difference. First operand 1268 states and 1537 transitions. Second operand 7 states. [2020-09-25 09:01:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:34,410 INFO L93 Difference]: Finished difference Result 3654 states and 4655 transitions. [2020-09-25 09:01:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:34,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-09-25 09:01:34,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:34,433 INFO L225 Difference]: With dead ends: 3654 [2020-09-25 09:01:34,434 INFO L226 Difference]: Without dead ends: 2410 [2020-09-25 09:01:34,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:01:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2020-09-25 09:01:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2275. [2020-09-25 09:01:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2275 states. [2020-09-25 09:01:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 2764 transitions. [2020-09-25 09:01:34,539 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 2764 transitions. Word has length 143 [2020-09-25 09:01:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:34,541 INFO L479 AbstractCegarLoop]: Abstraction has 2275 states and 2764 transitions. [2020-09-25 09:01:34,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 2764 transitions. [2020-09-25 09:01:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 09:01:34,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:34,550 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:01:34,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:01:34,551 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:34,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:34,551 INFO L82 PathProgramCache]: Analyzing trace with hash 2004739372, now seen corresponding path program 1 times [2020-09-25 09:01:34,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:34,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630504604] [2020-09-25 09:01:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:34,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:39,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:39,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:39,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 09:01:39,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 09:01:39,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:01:39,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:39,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 09:01:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 09:01:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:39,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:39,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:39,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:39,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:01:39,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:39,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:39,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:39,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:39,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:39,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:39,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:01:39,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:39,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:39,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:01:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:39,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:39,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:39,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:01:39,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:39,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:01:39,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:39,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:39,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:39,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:39,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:01:39,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 09:01:39,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630504604] [2020-09-25 09:01:39,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:39,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:01:39,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066944981] [2020-09-25 09:01:39,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:39,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:39,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:39,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:39,819 INFO L87 Difference]: Start difference. First operand 2275 states and 2764 transitions. Second operand 5 states. [2020-09-25 09:01:41,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:41,904 INFO L93 Difference]: Finished difference Result 5536 states and 6958 transitions. [2020-09-25 09:01:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:01:41,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-25 09:01:41,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:41,923 INFO L225 Difference]: With dead ends: 5536 [2020-09-25 09:01:41,923 INFO L226 Difference]: Without dead ends: 3426 [2020-09-25 09:01:41,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:41,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2020-09-25 09:01:42,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 2708. [2020-09-25 09:01:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2708 states. [2020-09-25 09:01:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3346 transitions. [2020-09-25 09:01:42,010 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3346 transitions. Word has length 155 [2020-09-25 09:01:42,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:42,011 INFO L479 AbstractCegarLoop]: Abstraction has 2708 states and 3346 transitions. [2020-09-25 09:01:42,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:01:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3346 transitions. [2020-09-25 09:01:42,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 09:01:42,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:42,021 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:01:42,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:42,021 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:42,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:42,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1701474981, now seen corresponding path program 1 times [2020-09-25 09:01:42,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:42,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594828449] [2020-09-25 09:01:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:47,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 09:01:47,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:01:47,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 09:01:47,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:47,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:01:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:01:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:47,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:47,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:47,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:47,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:01:47,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:47,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:47,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:47,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:47,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:47,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:47,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:47,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:47,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:47,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:47,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:01:47,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:47,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:47,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:01:47,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:47,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:01:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:47,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:47,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:47,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:01:47,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 09:01:47,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:47,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:01:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:01:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:01:47,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594828449] [2020-09-25 09:01:47,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:47,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:01:47,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159507440] [2020-09-25 09:01:47,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:01:47,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:47,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:01:47,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:01:47,443 INFO L87 Difference]: Start difference. First operand 2708 states and 3346 transitions. Second operand 6 states. [2020-09-25 09:01:49,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:49,391 INFO L93 Difference]: Finished difference Result 4999 states and 6313 transitions. [2020-09-25 09:01:49,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:01:49,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-09-25 09:01:49,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:49,404 INFO L225 Difference]: With dead ends: 4999 [2020-09-25 09:01:49,404 INFO L226 Difference]: Without dead ends: 2456 [2020-09-25 09:01:49,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:49,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2020-09-25 09:01:49,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2090. [2020-09-25 09:01:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2020-09-25 09:01:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 2401 transitions. [2020-09-25 09:01:49,468 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 2401 transitions. Word has length 164 [2020-09-25 09:01:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:49,468 INFO L479 AbstractCegarLoop]: Abstraction has 2090 states and 2401 transitions. [2020-09-25 09:01:49,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:01:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 2401 transitions. [2020-09-25 09:01:49,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 09:01:49,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:49,475 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 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] [2020-09-25 09:01:49,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:01:49,476 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:49,476 INFO L82 PathProgramCache]: Analyzing trace with hash -930214327, now seen corresponding path program 1 times [2020-09-25 09:01:49,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:49,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259702081] [2020-09-25 09:01:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking...