/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/Problem05_label20.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:17:37,526 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:17:37,530 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:17:37,573 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:17:37,574 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:17:37,583 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:17:37,585 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:17:37,587 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:17:37,590 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:17:37,594 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 01:17:37,595 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 01:17:37,597 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:17:37,597 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:17:37,600 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:17:37,603 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:17:37,606 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:17:37,607 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:17:37,608 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:17:37,610 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:17:37,618 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:17:37,622 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:17:37,623 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:17:37,624 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:17:37,624 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:17:37,635 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:17:37,635 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:17:37,636 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:17:37,636 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:17:37,637 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:17:37,640 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:17:37,641 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:17:37,641 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:17:37,642 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:17:37,643 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:17:37,644 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:17:37,644 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:17:37,645 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 01:17:37,645 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 01:17:37,645 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:17:37,647 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:17:37,648 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:17:37,649 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 01:17:37,688 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:17:37,688 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:17:37,691 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:17:37,691 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:17:37,691 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:17:37,691 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:17:37,692 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:17:37,692 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:17:37,692 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:17:37,692 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:17:37,693 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:17:37,693 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:17:37,694 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:17:37,694 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:17:37,694 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:17:37,694 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:17:37,695 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:17:37,695 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:17:37,695 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:17:37,695 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:17:37,695 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:17:37,696 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:17:37,696 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:17:37,696 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:17:37,696 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:17:37,696 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:17:37,696 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:17:37,697 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:17:37,697 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:17:37,697 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 01:17:38,045 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:17:38,068 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:17:38,072 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:17:38,074 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:17:38,074 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:17:38,075 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label20.c
[2020-10-14 01:17:38,147 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41042b2c/3e21cbc6cade44448abac0af5585dd85/FLAG00aee95b2
[2020-10-14 01:17:38,935 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:17:38,936 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label20.c
[2020-10-14 01:17:38,979 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41042b2c/3e21cbc6cade44448abac0af5585dd85/FLAG00aee95b2
[2020-10-14 01:17:39,456 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41042b2c/3e21cbc6cade44448abac0af5585dd85
[2020-10-14 01:17:39,466 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:17:39,468 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:17:39,469 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:17:39,470 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:17:39,473 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:17:39,475 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:17:39" (1/1) ...
[2020-10-14 01:17:39,478 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177c5926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:39, skipping insertion in model container
[2020-10-14 01:17:39,478 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:17:39" (1/1) ...
[2020-10-14 01:17:39,486 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:17:39,759 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:17:42,080 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:17:42,093 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:17:43,207 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:17:43,272 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:17:43,272 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:43 WrapperNode
[2020-10-14 01:17:43,272 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:17:43,273 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:17:43,273 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:17:43,274 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:17:43,289 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:43" (1/1) ...
[2020-10-14 01:17:43,290 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:43" (1/1) ...
[2020-10-14 01:17:43,371 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:43" (1/1) ...
[2020-10-14 01:17:43,372 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:43" (1/1) ...
[2020-10-14 01:17:43,555 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:43" (1/1) ...
[2020-10-14 01:17:43,606 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:43" (1/1) ...
[2020-10-14 01:17:43,851 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:43" (1/1) ...
[2020-10-14 01:17:43,922 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:17:43,923 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:17:43,923 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:17:43,924 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:17:43,925 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:43" (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 01:17:44,024 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:17:44,025 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:17:44,025 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:17:44,025 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:17:44,026 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:17:44,026 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:17:44,026 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:17:44,028 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:17:44,028 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:17:44,028 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:17:44,028 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:17:44,029 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:17:44,029 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:17:44,029 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:17:44,030 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:17:44,031 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:17:44,031 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:17:44,031 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:17:44,032 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:17:44,032 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:17:44,032 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:17:44,033 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:17:44,033 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:17:44,033 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:17:44,033 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:17:53,460 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:17:53,461 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:17:53,479 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:17:53 BoogieIcfgContainer
[2020-10-14 01:17:53,479 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:17:53,481 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:17:53,481 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:17:53,484 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:17:53,485 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:17:39" (1/3) ...
[2020-10-14 01:17:53,485 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631329be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:17:53, skipping insertion in model container
[2020-10-14 01:17:53,486 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:17:43" (2/3) ...
[2020-10-14 01:17:53,486 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631329be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:17:53, skipping insertion in model container
[2020-10-14 01:17:53,486 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:17:53" (3/3) ...
[2020-10-14 01:17:53,488 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label20.c
[2020-10-14 01:17:53,498 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:17:53,508 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:17:53,522 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:17:53,552 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:17:53,553 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:17:53,553 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:17:53,553 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:17:53,553 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:17:53,553 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:17:53,553 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:17:53,554 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:17:53,605 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:17:53,699 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1705
[2020-10-14 01:17:53,700 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:17:53,702 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:17:53,703 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:17:53,708 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:17:53,709 INFO  L82        PathProgramCache]: Analyzing trace with hash 1734449609, now seen corresponding path program 1 times
[2020-10-14 01:17:53,716 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:17:53,717 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769833253]
[2020-10-14 01:17:53,718 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:17:54,710 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:55,145 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:59,796 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:59,796 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1726
[2020-10-14 01:17:59,796 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:59,797 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5071
[2020-10-14 01:17:59,799 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:59,799 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:59,799 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:17:59,800 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:17:59,800 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1720
[2020-10-14 01:17:59,800 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:18:01,566 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:18:01,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:18:01,583 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:01,599 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:18:01,599 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:18:01,599 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:18:01,600 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-10-14 01:18:01,600 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:18:01,600 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:18:01,600 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:18:01,601 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:18:01,601 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:18:01,601 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:18:03,799 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 01:18:03,800 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769833253]
[2020-10-14 01:18:03,802 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:18:03,802 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-14 01:18:03,803 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685767952]
[2020-10-14 01:18:03,813 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-14 01:18:03,814 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:18:03,824 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-14 01:18:03,825 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-14 01:18:03,827 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-14 01:18:21,701 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:18:21,702 INFO  L93              Difference]: Finished difference Result 6311 states and 11851 transitions.
[2020-10-14 01:18:21,703 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:18:21,705 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1704
[2020-10-14 01:18:21,714 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:18:21,769 INFO  L225             Difference]: With dead ends: 6311
[2020-10-14 01:18:21,769 INFO  L226             Difference]: Without dead ends: 4025
[2020-10-14 01:18:21,782 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:18:21,808 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4025 states.
[2020-10-14 01:18:22,026 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996.
[2020-10-14 01:18:22,028 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3996 states.
[2020-10-14 01:18:22,054 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions.
[2020-10-14 01:18:22,056 INFO  L78                 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1704
[2020-10-14 01:18:22,062 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:18:22,062 INFO  L479      AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions.
[2020-10-14 01:18:22,062 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-14 01:18:22,063 INFO  L276                IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions.
[2020-10-14 01:18:22,374 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1714
[2020-10-14 01:18:22,374 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:18:22,376 INFO  L422         BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:22,376 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:18:22,376 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:18:22,377 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:18:22,378 INFO  L82        PathProgramCache]: Analyzing trace with hash -677987970, now seen corresponding path program 1 times
[2020-10-14 01:18:22,379 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:18:22,379 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564995481]
[2020-10-14 01:18:22,380 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:18:22,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:18:22,549 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:24,790 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:27,634 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:18:27,634 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1737
[2020-10-14 01:18:27,635 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:18:27,635 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5116
[2020-10-14 01:18:27,636 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:18:27,636 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:18:27,636 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:18:27,637 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:18:27,637 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:18:27,637 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:18:28,912 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:18:28,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:18:28,917 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:28,923 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:18:28,923 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:18:28,923 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:18:28,924 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 01:18:28,924 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:18:28,924 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:18:28,924 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:18:28,924 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:18:28,925 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:18:28,925 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:18:28,944 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:18:28,947 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:18:28,950 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:28,971 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:18:28,971 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 01:18:28,972 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:18:28,972 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-10-14 01:18:28,972 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:18:28,972 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:18:28,972 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:18:28,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:18:28,973 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-14 01:18:28,973 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:18:29,961 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:18:29,962 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564995481]
[2020-10-14 01:18:29,962 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:18:29,962 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:18:29,962 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671897527]
[2020-10-14 01:18:29,967 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:18:29,968 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:18:29,968 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:18:29,968 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:18:29,969 INFO  L87              Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 7 states.
[2020-10-14 01:18:56,045 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:18:56,045 INFO  L93              Difference]: Finished difference Result 11926 states and 19288 transitions.
[2020-10-14 01:18:56,048 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:18:56,049 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1713
[2020-10-14 01:18:56,049 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:18:56,098 INFO  L225             Difference]: With dead ends: 11926
[2020-10-14 01:18:56,098 INFO  L226             Difference]: Without dead ends: 7936
[2020-10-14 01:18:56,109 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:18:56,119 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7936 states.
[2020-10-14 01:18:56,317 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7936 to 7743.
[2020-10-14 01:18:56,317 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7743 states.
[2020-10-14 01:18:56,352 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7743 states to 7743 states and 11188 transitions.
[2020-10-14 01:18:56,352 INFO  L78                 Accepts]: Start accepts. Automaton has 7743 states and 11188 transitions. Word has length 1713
[2020-10-14 01:18:56,353 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:18:56,353 INFO  L479      AbstractCegarLoop]: Abstraction has 7743 states and 11188 transitions.
[2020-10-14 01:18:56,353 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:18:56,353 INFO  L276                IsEmpty]: Start isEmpty. Operand 7743 states and 11188 transitions.
[2020-10-14 01:18:56,421 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1716
[2020-10-14 01:18:56,421 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:18:56,422 INFO  L422         BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:18:56,423 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:18:56,423 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:18:56,423 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:18:56,424 INFO  L82        PathProgramCache]: Analyzing trace with hash 801712474, now seen corresponding path program 1 times
[2020-10-14 01:18:56,424 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:18:56,424 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317314014]
[2020-10-14 01:18:56,425 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:18:56,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:18:57,023 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:57,439 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:01,856 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:01,856 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1739
[2020-10-14 01:19:01,856 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:19:01,856 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5069
[2020-10-14 01:19:01,856 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:01,857 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:01,857 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:19:01,857 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:19:01,857 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-14 01:19:01,857 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:19:02,303 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:19:02,306 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:02,308 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:02,325 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:02,326 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:19:02,326 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:19:02,326 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-10-14 01:19:02,326 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:02,327 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:02,327 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:19:02,327 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:19:02,327 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:19:02,328 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:02,352 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:19:02,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:02,357 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:02,401 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:02,402 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-14 01:19:02,402 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:19:02,402 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 46
[2020-10-14 01:19:02,403 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:02,403 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:02,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:19:02,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:19:02,403 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-14 01:19:02,404 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:03,669 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:19:03,670 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317314014]
[2020-10-14 01:19:03,670 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:19:03,670 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-14 01:19:03,671 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561883055]
[2020-10-14 01:19:03,672 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:19:03,673 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:19:03,673 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:19:03,673 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:19:03,674 INFO  L87              Difference]: Start difference. First operand 7743 states and 11188 transitions. Second operand 8 states.
[2020-10-14 01:19:44,481 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:19:44,482 INFO  L93              Difference]: Finished difference Result 31004 states and 46128 transitions.
[2020-10-14 01:19:44,482 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-10-14 01:19:44,483 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1715
[2020-10-14 01:19:44,483 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:19:44,585 INFO  L225             Difference]: With dead ends: 31004
[2020-10-14 01:19:44,585 INFO  L226             Difference]: Without dead ends: 23267
[2020-10-14 01:19:44,610 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306
[2020-10-14 01:19:44,639 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23267 states.
[2020-10-14 01:19:45,116 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23267 to 22855.
[2020-10-14 01:19:45,117 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22855 states.
[2020-10-14 01:19:45,160 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22855 states to 22855 states and 29066 transitions.
[2020-10-14 01:19:45,161 INFO  L78                 Accepts]: Start accepts. Automaton has 22855 states and 29066 transitions. Word has length 1715
[2020-10-14 01:19:45,161 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:19:45,162 INFO  L479      AbstractCegarLoop]: Abstraction has 22855 states and 29066 transitions.
[2020-10-14 01:19:45,162 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 01:19:45,162 INFO  L276                IsEmpty]: Start isEmpty. Operand 22855 states and 29066 transitions.
[2020-10-14 01:19:45,304 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1727
[2020-10-14 01:19:45,304 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:19:45,306 INFO  L422         BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:19:45,306 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:19:45,306 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:19:45,307 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:19:45,307 INFO  L82        PathProgramCache]: Analyzing trace with hash -2082472534, now seen corresponding path program 1 times
[2020-10-14 01:19:45,308 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:19:45,317 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481110100]
[2020-10-14 01:19:45,317 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:19:46,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:46,403 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:47,099 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:47,491 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:51,142 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:51,143 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1750
[2020-10-14 01:19:51,143 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:19:51,143 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5117
[2020-10-14 01:19:51,143 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:51,143 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:51,144 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:19:51,144 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:19:51,144 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-14 01:19:51,144 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:51,482 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:19:51,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:51,487 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:51,493 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:51,493 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:19:51,493 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:19:51,494 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-14 01:19:51,494 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:51,494 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:51,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:19:51,494 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:19:51,495 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:19:51,495 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:51,527 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:19:51,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:51,539 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:51,580 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:51,580 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-14 01:19:51,581 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:19:51,581 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 47
[2020-10-14 01:19:51,581 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:51,582 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:51,582 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:19:51,582 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:19:51,582 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-14 01:19:51,583 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:52,809 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:19:52,810 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481110100]
[2020-10-14 01:19:52,810 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:19:52,811 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-14 01:19:52,811 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847095072]
[2020-10-14 01:19:52,813 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:19:52,813 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:19:52,813 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:19:52,814 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:19:52,814 INFO  L87              Difference]: Start difference. First operand 22855 states and 29066 transitions. Second operand 8 states.
[2020-10-14 01:20:31,023 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:20:31,023 INFO  L93              Difference]: Finished difference Result 79883 states and 110370 transitions.
[2020-10-14 01:20:31,026 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-14 01:20:31,026 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1726
[2020-10-14 01:20:31,026 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:20:31,250 INFO  L225             Difference]: With dead ends: 79883
[2020-10-14 01:20:31,250 INFO  L226             Difference]: Without dead ends: 57034
[2020-10-14 01:20:31,327 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182
[2020-10-14 01:20:31,391 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57034 states.
[2020-10-14 01:20:32,676 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57034 to 56278.
[2020-10-14 01:20:32,676 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 56278 states.
[2020-10-14 01:20:32,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56278 states to 56278 states and 72113 transitions.
[2020-10-14 01:20:32,804 INFO  L78                 Accepts]: Start accepts. Automaton has 56278 states and 72113 transitions. Word has length 1726
[2020-10-14 01:20:32,804 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:20:32,804 INFO  L479      AbstractCegarLoop]: Abstraction has 56278 states and 72113 transitions.
[2020-10-14 01:20:32,804 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 01:20:32,805 INFO  L276                IsEmpty]: Start isEmpty. Operand 56278 states and 72113 transitions.
[2020-10-14 01:20:32,995 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1770
[2020-10-14 01:20:32,995 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:20:32,997 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:20:32,997 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:20:32,997 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:20:32,997 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:20:32,998 INFO  L82        PathProgramCache]: Analyzing trace with hash 921521682, now seen corresponding path program 1 times
[2020-10-14 01:20:32,998 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:20:32,999 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064049293]
[2020-10-14 01:20:32,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:20:33,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:33,147 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:33,367 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:38,191 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:38,191 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1793
[2020-10-14 01:20:38,192 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:20:38,192 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5074
[2020-10-14 01:20:38,192 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:38,192 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:38,192 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:20:38,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:20:38,193 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 71
[2020-10-14 01:20:38,193 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:20:38,546 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:20:38,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:38,550 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:38,554 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:38,554 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:20:38,555 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:38,555 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-14 01:20:38,555 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:38,555 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:38,556 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:20:38,556 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:20:38,556 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:20:38,556 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:20:38,586 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:20:38,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:38,605 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:38,665 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:38,666 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 66
[2020-10-14 01:20:38,666 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:38,666 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 66
[2020-10-14 01:20:38,666 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:38,667 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:38,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:20:38,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:20:38,667 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 66
[2020-10-14 01:20:38,667 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:20:40,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:20:40,035 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064049293]
[2020-10-14 01:20:40,035 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:20:40,035 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:20:40,035 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770695726]
[2020-10-14 01:20:40,037 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:20:40,037 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:20:40,037 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:20:40,037 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:20:40,038 INFO  L87              Difference]: Start difference. First operand 56278 states and 72113 transitions. Second operand 7 states.
[2020-10-14 01:21:05,988 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:21:05,988 INFO  L93              Difference]: Finished difference Result 127635 states and 171934 transitions.
[2020-10-14 01:21:05,989 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-14 01:21:05,989 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1769
[2020-10-14 01:21:05,990 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:21:06,182 INFO  L225             Difference]: With dead ends: 127635
[2020-10-14 01:21:06,183 INFO  L226             Difference]: Without dead ends: 71363
[2020-10-14 01:21:06,264 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-14 01:21:06,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 71363 states.
[2020-10-14 01:21:07,403 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 71363 to 69238.
[2020-10-14 01:21:07,403 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 69238 states.
[2020-10-14 01:21:07,541 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69238 states to 69238 states and 88597 transitions.
[2020-10-14 01:21:07,545 INFO  L78                 Accepts]: Start accepts. Automaton has 69238 states and 88597 transitions. Word has length 1769
[2020-10-14 01:21:07,546 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:21:07,546 INFO  L479      AbstractCegarLoop]: Abstraction has 69238 states and 88597 transitions.
[2020-10-14 01:21:07,546 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:21:07,546 INFO  L276                IsEmpty]: Start isEmpty. Operand 69238 states and 88597 transitions.
[2020-10-14 01:21:07,708 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1858
[2020-10-14 01:21:07,708 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:21:07,710 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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[2020-10-14 01:21:07,710 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 01:21:07,710 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:21:07,711 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:21:07,711 INFO  L82        PathProgramCache]: Analyzing trace with hash 628324695, now seen corresponding path program 1 times
[2020-10-14 01:21:07,712 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:21:07,712 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779727825]
[2020-10-14 01:21:07,712 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:21:08,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:08,288 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:08,932 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:13,098 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:13,098 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1883
[2020-10-14 01:21:13,098 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:21:13,099 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5026
[2020-10-14 01:21:13,099 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:13,099 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:13,099 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 01:21:13,099 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 165
[2020-10-14 01:21:13,099 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1717
[2020-10-14 01:21:13,099 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:21:14,065 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:21:14,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:14,067 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:14,068 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:14,068 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:21:14,069 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:14,069 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-14 01:21:14,069 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:14,069 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:14,069 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:21:14,069 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:14,069 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:21:14,070 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:21:14,091 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:21:14,097 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:14,099 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:14,118 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:14,118 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-14 01:21:14,118 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:14,119 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-14 01:21:14,119 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:14,119 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:14,119 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:21:14,119 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:14,119 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:21:14,120 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:21:14,140 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-10-14 01:21:14,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:14,150 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:14,168 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:14,168 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-14 01:21:14,168 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:14,169 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-14 01:21:14,169 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:14,169 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:14,169 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:21:14,169 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:14,169 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-14 01:21:14,170 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:21:17,023 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2020-10-14 01:21:17,024 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779727825]
[2020-10-14 01:21:17,024 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:21:17,024 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-14 01:21:17,025 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118842211]
[2020-10-14 01:21:17,027 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-14 01:21:17,028 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:21:17,028 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-14 01:21:17,028 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-14 01:21:17,028 INFO  L87              Difference]: Start difference. First operand 69238 states and 88597 transitions. Second operand 6 states.