/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:07:01,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:07:01,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:07:01,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:07:01,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:07:01,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:07:01,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:07:01,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:07:01,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:07:01,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:07:01,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:07:01,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:07:01,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:07:01,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:07:01,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:07:01,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:07:01,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:07:01,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:07:01,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:07:01,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:07:01,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:07:01,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:07:01,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:07:01,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:07:01,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:07:01,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:07:01,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:07:01,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:07:01,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:07:01,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:07:01,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:07:01,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:07:01,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:07:01,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:07:01,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:07:01,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:07:01,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:07:01,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:07:01,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:07:01,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:07:01,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:07:01,848 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 [2020-09-24 17:07:01,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:07:01,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:07:01,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:07:01,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:07:01,878 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:07:01,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:07:01,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:07:01,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:07:01,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:07:01,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:07:01,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:07:01,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:07:01,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:07:01,880 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:07:01,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:07:01,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:07:01,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:07:01,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:07:01,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:07:01,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:07:01,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:07:01,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:07:01,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:07:01,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:07:01,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:07:01,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:07:01,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:07:01,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:07:01,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:07:01,884 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;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;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;log-additional-information=true; [2020-09-24 17:07:02,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:07:02,379 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:07:02,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:07:02,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:07:02,385 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:07:02,387 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2020-09-24 17:07:02,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb5fdc3a9/17481966ed5e4841b6944aea82ae2d9b/FLAG01e0936d3 [2020-09-24 17:07:03,091 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:07:03,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list-2.i [2020-09-24 17:07:03,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb5fdc3a9/17481966ed5e4841b6944aea82ae2d9b/FLAG01e0936d3 [2020-09-24 17:07:03,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb5fdc3a9/17481966ed5e4841b6944aea82ae2d9b [2020-09-24 17:07:03,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:07:03,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:07:03,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:07:03,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:07:03,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:07:03,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:07:03" (1/1) ... [2020-09-24 17:07:03,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdfc9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:03, skipping insertion in model container [2020-09-24 17:07:03,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:07:03" (1/1) ... [2020-09-24 17:07:03,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:07:03,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:07:03,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:07:03,959 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:07:04,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:07:04,109 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:07:04,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:04 WrapperNode [2020-09-24 17:07:04,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:07:04,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:07:04,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:07:04,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:07:04,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:04" (1/1) ... [2020-09-24 17:07:04,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:04" (1/1) ... [2020-09-24 17:07:04,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:04" (1/1) ... [2020-09-24 17:07:04,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:04" (1/1) ... [2020-09-24 17:07:04,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:04" (1/1) ... [2020-09-24 17:07:04,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:04" (1/1) ... [2020-09-24 17:07:04,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:04" (1/1) ... [2020-09-24 17:07:04,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:07:04,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:07:04,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:07:04,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:07:04,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:04" (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 [2020-09-24 17:07:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:07:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:07:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 17:07:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 17:07:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-24 17:07:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-24 17:07:04,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-24 17:07:04,291 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 17:07:04,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:07:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:07:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:07:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 17:07:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 17:07:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 17:07:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 17:07:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 17:07:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 17:07:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 17:07:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 17:07:04,295 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 17:07:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 17:07:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 17:07:04,296 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 17:07:04,297 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 17:07:04,298 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 17:07:04,299 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 17:07:04,299 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 17:07:04,299 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 17:07:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 17:07:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-24 17:07:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-24 17:07:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-24 17:07:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 17:07:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 17:07:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 17:07:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 17:07:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 17:07:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 17:07:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 17:07:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 17:07:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 17:07:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 17:07:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 17:07:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 17:07:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 17:07:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 17:07:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 17:07:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 17:07:04,303 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 17:07:04,303 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 17:07:04,303 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 17:07:04,303 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 17:07:04,303 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 17:07:04,304 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 17:07:04,304 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 17:07:04,304 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 17:07:04,304 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 17:07:04,305 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 17:07:04,305 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 17:07:04,305 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 17:07:04,305 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 17:07:04,305 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 17:07:04,305 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 17:07:04,306 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 17:07:04,306 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 17:07:04,306 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 17:07:04,306 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:07:04,307 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 17:07:04,307 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 17:07:04,307 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:07:04,307 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 17:07:04,308 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 17:07:04,309 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 17:07:04,309 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 17:07:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:07:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 17:07:04,310 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 17:07:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 17:07:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:07:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 17:07:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 17:07:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 17:07:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 17:07:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 17:07:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 17:07:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 17:07:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 17:07:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 17:07:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 17:07:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 17:07:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 17:07:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 17:07:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 17:07:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 17:07:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 17:07:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 17:07:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 17:07:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 17:07:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 17:07:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 17:07:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 17:07:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 17:07:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 17:07:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 17:07:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 17:07:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 17:07:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 17:07:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 17:07:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 17:07:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 17:07:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 17:07:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 17:07:04,317 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 17:07:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 17:07:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 17:07:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 17:07:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 17:07:04,318 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 17:07:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 17:07:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:07:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:07:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:07:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:07:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:07:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:07:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:07:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:07:04,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:07:04,701 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 17:07:04,933 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:07:04,933 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 17:07:04,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:07:04 BoogieIcfgContainer [2020-09-24 17:07:04,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:07:04,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:07:04,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:07:04,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:07:04,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:07:03" (1/3) ... [2020-09-24 17:07:04,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109160cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:07:04, skipping insertion in model container [2020-09-24 17:07:04,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:04" (2/3) ... [2020-09-24 17:07:04,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109160cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:07:04, skipping insertion in model container [2020-09-24 17:07:04,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:07:04" (3/3) ... [2020-09-24 17:07:04,948 INFO L109 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-09-24 17:07:04,960 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:07:04,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:07:04,993 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:07:05,020 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:07:05,021 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:07:05,021 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:07:05,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:07:05,021 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:07:05,021 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:07:05,021 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:07:05,022 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:07:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-09-24 17:07:05,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-24 17:07:05,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:05,056 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] [2020-09-24 17:07:05,056 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:05,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1227115345, now seen corresponding path program 1 times [2020-09-24 17:07:05,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:05,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933082837] [2020-09-24 17:07:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:05,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:05,783 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:05,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 17:07:05,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:07:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-09-24 17:07:05,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:07:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:07:05,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:07:05,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:07:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:05,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:05,912 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:05,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:05,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:05,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 17:07:05,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:05,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:05,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:07:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:05,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933082837] [2020-09-24 17:07:05,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:05,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:07:05,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102131763] [2020-09-24 17:07:05,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:07:05,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:05,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:07:05,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:07:05,964 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 7 states. [2020-09-24 17:07:06,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:06,416 INFO L93 Difference]: Finished difference Result 198 states and 237 transitions. [2020-09-24 17:07:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:07:06,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-09-24 17:07:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:06,437 INFO L225 Difference]: With dead ends: 198 [2020-09-24 17:07:06,437 INFO L226 Difference]: Without dead ends: 128 [2020-09-24 17:07:06,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:07:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-24 17:07:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 70. [2020-09-24 17:07:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 17:07:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-09-24 17:07:06,535 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 22 [2020-09-24 17:07:06,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:06,535 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-09-24 17:07:06,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:07:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-09-24 17:07:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 17:07:06,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:06,539 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:07:06,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:07:06,540 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:06,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:06,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1213729417, now seen corresponding path program 1 times [2020-09-24 17:07:06,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:06,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970256902] [2020-09-24 17:07:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:06,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:06,755 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:06,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 17:07:06,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:06,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-24 17:07:06,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:06,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:07:06,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:07:06,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:07:06,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:06,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:06,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:06,829 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:06,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:06,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:06,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:06,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:06,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:06,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:06,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970256902] [2020-09-24 17:07:06,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:06,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:07:06,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619845564] [2020-09-24 17:07:06,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:07:06,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:06,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:07:06,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:07:06,842 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 7 states. [2020-09-24 17:07:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:07,081 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2020-09-24 17:07:07,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:07:07,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 17:07:07,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:07,084 INFO L225 Difference]: With dead ends: 137 [2020-09-24 17:07:07,084 INFO L226 Difference]: Without dead ends: 122 [2020-09-24 17:07:07,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:07:07,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-24 17:07:07,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 67. [2020-09-24 17:07:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 17:07:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-09-24 17:07:07,094 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 36 [2020-09-24 17:07:07,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:07,095 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-09-24 17:07:07,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:07:07,095 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-09-24 17:07:07,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 17:07:07,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:07,097 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:07:07,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:07:07,098 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:07,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:07,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2044556103, now seen corresponding path program 1 times [2020-09-24 17:07:07,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:07,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704082005] [2020-09-24 17:07:07,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:07,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:07,254 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:07,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 17:07:07,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:07,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 17:07:07,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:07:07,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:07:07,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:07:07,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:07,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:07,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:07,318 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:07,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:07,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:07,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:07,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:07,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:07,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:07,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704082005] [2020-09-24 17:07:07,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:07,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:07:07,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287329474] [2020-09-24 17:07:07,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:07:07,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:07,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:07:07,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:07:07,328 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-09-24 17:07:07,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:07,535 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-09-24 17:07:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:07:07,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 17:07:07,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:07,537 INFO L225 Difference]: With dead ends: 119 [2020-09-24 17:07:07,537 INFO L226 Difference]: Without dead ends: 95 [2020-09-24 17:07:07,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:07:07,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-24 17:07:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 62. [2020-09-24 17:07:07,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 17:07:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-24 17:07:07,552 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 36 [2020-09-24 17:07:07,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:07,552 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-24 17:07:07,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:07:07,554 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-24 17:07:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 17:07:07,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:07,555 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:07:07,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:07:07,557 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:07,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:07,558 INFO L82 PathProgramCache]: Analyzing trace with hash -833752717, now seen corresponding path program 1 times [2020-09-24 17:07:07,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:07,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085072807] [2020-09-24 17:07:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:07,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:08,649 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:08,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 17:07:08,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:08,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-09-24 17:07:08,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:07:08,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:07:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:07:08,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:08,837 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:08,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:08,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:08,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:08,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:08,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:08,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085072807] [2020-09-24 17:07:08,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:08,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:07:08,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157480125] [2020-09-24 17:07:08,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:07:08,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:08,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:07:08,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:07:08,852 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 11 states. [2020-09-24 17:07:09,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:09,362 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2020-09-24 17:07:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:07:09,363 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-09-24 17:07:09,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:09,368 INFO L225 Difference]: With dead ends: 143 [2020-09-24 17:07:09,368 INFO L226 Difference]: Without dead ends: 137 [2020-09-24 17:07:09,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-24 17:07:09,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-24 17:07:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 81. [2020-09-24 17:07:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 17:07:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-09-24 17:07:09,389 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 41 [2020-09-24 17:07:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:09,390 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-09-24 17:07:09,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:07:09,390 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-09-24 17:07:09,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 17:07:09,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:09,395 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:07:09,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:07:09,398 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:09,398 INFO L82 PathProgramCache]: Analyzing trace with hash 865863745, now seen corresponding path program 1 times [2020-09-24 17:07:09,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:09,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425117145] [2020-09-24 17:07:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:09,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:10,454 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:10,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 17:07:10,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:10,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-24 17:07:10,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:07:10,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:07:10,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:07:10,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:10,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:10,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:10,652 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:10,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:10,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:10,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:07:10,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:10,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:10,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:10,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425117145] [2020-09-24 17:07:10,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:10,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:07:10,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153232473] [2020-09-24 17:07:10,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:07:10,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:10,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:07:10,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:07:10,665 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 11 states. [2020-09-24 17:07:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:11,245 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-09-24 17:07:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 17:07:11,245 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-09-24 17:07:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:11,247 INFO L225 Difference]: With dead ends: 159 [2020-09-24 17:07:11,247 INFO L226 Difference]: Without dead ends: 153 [2020-09-24 17:07:11,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:07:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-24 17:07:11,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 93. [2020-09-24 17:07:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 17:07:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-09-24 17:07:11,256 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 41 [2020-09-24 17:07:11,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:11,256 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-09-24 17:07:11,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:07:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-09-24 17:07:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 17:07:11,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:11,258 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:07:11,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:07:11,259 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:11,259 INFO L82 PathProgramCache]: Analyzing trace with hash -2114514645, now seen corresponding path program 1 times [2020-09-24 17:07:11,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:11,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709763513] [2020-09-24 17:07:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:11,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:12,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:13,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:14,153 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:14,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 17:07:14,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:07:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2873 [2020-09-24 17:07:14,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:14,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:07:14,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:14,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:07:14,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:14,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:14,623 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:14,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:14,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:14,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:07:14,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:14,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:14,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:14,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:14,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 17:07:14,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709763513] [2020-09-24 17:07:14,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:14,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 17:07:14,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739060022] [2020-09-24 17:07:14,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 17:07:14,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:14,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 17:07:14,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:07:14,641 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 15 states. [2020-09-24 17:07:15,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:15,473 INFO L93 Difference]: Finished difference Result 173 states and 185 transitions. [2020-09-24 17:07:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 17:07:15,474 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-09-24 17:07:15,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:15,475 INFO L225 Difference]: With dead ends: 173 [2020-09-24 17:07:15,475 INFO L226 Difference]: Without dead ends: 158 [2020-09-24 17:07:15,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2020-09-24 17:07:15,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-24 17:07:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 100. [2020-09-24 17:07:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 17:07:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2020-09-24 17:07:15,495 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 47 [2020-09-24 17:07:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:15,495 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2020-09-24 17:07:15,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 17:07:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2020-09-24 17:07:15,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 17:07:15,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:15,501 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:07:15,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:07:15,501 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:15,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:15,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1077832869, now seen corresponding path program 1 times [2020-09-24 17:07:15,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:15,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958414751] [2020-09-24 17:07:15,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:16,102 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:16,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 17:07:16,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:16,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-09-24 17:07:16,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:07:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:07:16,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:16,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:16,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:16,441 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:16,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:16,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:16,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:16,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:16,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:16,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958414751] [2020-09-24 17:07:16,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:16,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:07:16,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345127791] [2020-09-24 17:07:16,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:07:16,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:16,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:07:16,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:07:16,466 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand 16 states. [2020-09-24 17:07:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:17,409 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-09-24 17:07:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 17:07:17,410 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-24 17:07:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:17,411 INFO L225 Difference]: With dead ends: 165 [2020-09-24 17:07:17,411 INFO L226 Difference]: Without dead ends: 159 [2020-09-24 17:07:17,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 17:07:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-24 17:07:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 104. [2020-09-24 17:07:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-24 17:07:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-09-24 17:07:17,425 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 47 [2020-09-24 17:07:17,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:17,425 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-09-24 17:07:17,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:07:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-09-24 17:07:17,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 17:07:17,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:17,427 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:07:17,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:07:17,428 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:17,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:17,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1893706375, now seen corresponding path program 1 times [2020-09-24 17:07:17,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:17,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927388950] [2020-09-24 17:07:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:17,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:18,046 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:18,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 17:07:18,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:18,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-09-24 17:07:18,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:07:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:07:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:18,530 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:18,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:18,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:18,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:18,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:18,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927388950] [2020-09-24 17:07:18,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:18,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:07:18,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577126957] [2020-09-24 17:07:18,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:07:18,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:18,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:07:18,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:07:18,603 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 16 states. [2020-09-24 17:07:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:19,850 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2020-09-24 17:07:19,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 17:07:19,851 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-24 17:07:19,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:19,853 INFO L225 Difference]: With dead ends: 179 [2020-09-24 17:07:19,853 INFO L226 Difference]: Without dead ends: 173 [2020-09-24 17:07:19,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 17:07:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-24 17:07:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 113. [2020-09-24 17:07:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-24 17:07:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2020-09-24 17:07:19,862 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 47 [2020-09-24 17:07:19,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:19,863 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2020-09-24 17:07:19,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:07:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2020-09-24 17:07:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 17:07:19,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:19,865 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:07:19,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:07:19,865 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:19,866 INFO L82 PathProgramCache]: Analyzing trace with hash -857024599, now seen corresponding path program 1 times [2020-09-24 17:07:19,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:19,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400582707] [2020-09-24 17:07:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:21,007 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:21,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 17:07:21,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:21,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1119 [2020-09-24 17:07:21,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:07:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:07:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 17:07:21,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:21,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:21,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:21,106 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:21,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:21,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:21,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:07:21,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:21,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:21,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:21,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:21,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400582707] [2020-09-24 17:07:21,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:21,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:07:21,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016114665] [2020-09-24 17:07:21,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:07:21,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:21,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:07:21,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:07:21,121 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 9 states. [2020-09-24 17:07:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:21,453 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2020-09-24 17:07:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:07:21,453 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-09-24 17:07:21,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:21,454 INFO L225 Difference]: With dead ends: 171 [2020-09-24 17:07:21,455 INFO L226 Difference]: Without dead ends: 152 [2020-09-24 17:07:21,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:07:21,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-24 17:07:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 113. [2020-09-24 17:07:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-24 17:07:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-09-24 17:07:21,472 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 47 [2020-09-24 17:07:21,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:21,472 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-09-24 17:07:21,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:07:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-09-24 17:07:21,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 17:07:21,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:21,475 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:21,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:07:21,475 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:21,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:21,476 INFO L82 PathProgramCache]: Analyzing trace with hash 294895633, now seen corresponding path program 2 times [2020-09-24 17:07:21,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:21,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001274462] [2020-09-24 17:07:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:21,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:23,133 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:23,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 17:07:23,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-09-24 17:07:23,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:07:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 17:07:23,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:23,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:23,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:23,547 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:23,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:23,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:23,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:07:23,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:23,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:23,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001274462] [2020-09-24 17:07:23,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:23,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 17:07:23,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469635708] [2020-09-24 17:07:23,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 17:07:23,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:23,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 17:07:23,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:07:23,565 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 20 states. [2020-09-24 17:07:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:24,544 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2020-09-24 17:07:24,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 17:07:24,545 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-09-24 17:07:24,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:24,546 INFO L225 Difference]: With dead ends: 183 [2020-09-24 17:07:24,546 INFO L226 Difference]: Without dead ends: 170 [2020-09-24 17:07:24,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 17:07:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-24 17:07:24,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 129. [2020-09-24 17:07:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-24 17:07:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2020-09-24 17:07:24,557 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 52 [2020-09-24 17:07:24,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:24,558 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2020-09-24 17:07:24,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 17:07:24,558 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2020-09-24 17:07:24,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 17:07:24,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:24,559 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:07:24,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:07:24,560 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:24,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1689189507, now seen corresponding path program 1 times [2020-09-24 17:07:24,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:24,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956986465] [2020-09-24 17:07:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:24,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:25,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:25,902 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:25,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 17:07:25,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-09-24 17:07:25,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:07:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 17:07:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:07:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:26,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:26,295 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:26,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:26,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:26,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:07:26,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:26,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:26,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:26,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:26,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956986465] [2020-09-24 17:07:26,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:26,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 17:07:26,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779858431] [2020-09-24 17:07:26,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 17:07:26,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:26,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 17:07:26,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:07:26,319 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand 18 states. [2020-09-24 17:07:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:27,732 INFO L93 Difference]: Finished difference Result 230 states and 244 transitions. [2020-09-24 17:07:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 17:07:27,733 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-09-24 17:07:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:27,736 INFO L225 Difference]: With dead ends: 230 [2020-09-24 17:07:27,736 INFO L226 Difference]: Without dead ends: 224 [2020-09-24 17:07:27,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 17:07:27,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-09-24 17:07:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 155. [2020-09-24 17:07:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 17:07:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-09-24 17:07:27,746 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 52 [2020-09-24 17:07:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:27,747 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-09-24 17:07:27,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 17:07:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-09-24 17:07:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 17:07:27,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:27,748 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:07:27,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:07:27,748 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash 219391251, now seen corresponding path program 1 times [2020-09-24 17:07:27,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:27,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864955911] [2020-09-24 17:07:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:27,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:28,247 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:28,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 17:07:28,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-24 17:07:28,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:07:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 17:07:28,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:28,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:28,616 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:28,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:28,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:07:28,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:28,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864955911] [2020-09-24 17:07:28,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:28,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:07:28,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839584225] [2020-09-24 17:07:28,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:07:28,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:28,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:07:28,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:07:28,641 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 16 states. [2020-09-24 17:07:29,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:29,678 INFO L93 Difference]: Finished difference Result 221 states and 235 transitions. [2020-09-24 17:07:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 17:07:29,679 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-24 17:07:29,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:29,680 INFO L225 Difference]: With dead ends: 221 [2020-09-24 17:07:29,680 INFO L226 Difference]: Without dead ends: 206 [2020-09-24 17:07:29,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 17:07:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-24 17:07:29,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 155. [2020-09-24 17:07:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 17:07:29,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-09-24 17:07:29,691 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 53 [2020-09-24 17:07:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:29,692 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-09-24 17:07:29,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:07:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-09-24 17:07:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 17:07:29,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:29,693 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 17:07:29,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 17:07:29,693 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:29,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:29,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1256073027, now seen corresponding path program 2 times [2020-09-24 17:07:29,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:29,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179021282] [2020-09-24 17:07:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:30,179 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:30,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 17:07:30,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:30,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-09-24 17:07:30,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:07:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:30,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 17:07:30,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:30,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:30,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:30,464 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:30,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:30,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:30,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:07:30,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:30,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:30,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179021282] [2020-09-24 17:07:30,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:30,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:07:30,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348983264] [2020-09-24 17:07:30,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:07:30,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:30,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:07:30,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:07:30,480 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 16 states. [2020-09-24 17:07:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:31,508 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2020-09-24 17:07:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 17:07:31,509 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-24 17:07:31,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:31,511 INFO L225 Difference]: With dead ends: 203 [2020-09-24 17:07:31,511 INFO L226 Difference]: Without dead ends: 173 [2020-09-24 17:07:31,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-24 17:07:31,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-24 17:07:31,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 146. [2020-09-24 17:07:31,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-24 17:07:31,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 156 transitions. [2020-09-24 17:07:31,519 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 156 transitions. Word has length 53 [2020-09-24 17:07:31,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:31,519 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 156 transitions. [2020-09-24 17:07:31,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:07:31,520 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 156 transitions. [2020-09-24 17:07:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 17:07:31,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:31,521 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 17:07:31,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 17:07:31,521 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:31,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:31,521 INFO L82 PathProgramCache]: Analyzing trace with hash 164878513, now seen corresponding path program 2 times [2020-09-24 17:07:31,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:31,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584834577] [2020-09-24 17:07:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:31,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:31,996 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:31,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 17:07:31,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:31,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-24 17:07:31,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:31,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:07:31,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:31,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 17:07:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:32,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:32,371 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:32,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:32,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:07:32,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:32,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:32,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584834577] [2020-09-24 17:07:32,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:32,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:07:32,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493542076] [2020-09-24 17:07:32,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:07:32,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:32,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:07:32,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:07:32,397 INFO L87 Difference]: Start difference. First operand 146 states and 156 transitions. Second operand 16 states. [2020-09-24 17:07:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:33,437 INFO L93 Difference]: Finished difference Result 177 states and 188 transitions. [2020-09-24 17:07:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 17:07:33,438 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-24 17:07:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:33,439 INFO L225 Difference]: With dead ends: 177 [2020-09-24 17:07:33,439 INFO L226 Difference]: Without dead ends: 151 [2020-09-24 17:07:33,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-24 17:07:33,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-24 17:07:33,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 134. [2020-09-24 17:07:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-24 17:07:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2020-09-24 17:07:33,447 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 53 [2020-09-24 17:07:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:33,447 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2020-09-24 17:07:33,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:07:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2020-09-24 17:07:33,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 17:07:33,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:33,448 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 17:07:33,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 17:07:33,449 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:33,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:33,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1525845127, now seen corresponding path program 3 times [2020-09-24 17:07:33,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:33,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401015114] [2020-09-24 17:07:33,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:33,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:34,381 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:34,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 17:07:34,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:34,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 911 [2020-09-24 17:07:34,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:34,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 17:07:34,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:07:34,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 17:07:34,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:35,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:35,231 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:35,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:07:35,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:35,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:07:35,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:07:35,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401015114] [2020-09-24 17:07:35,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:35,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 17:07:35,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620892403] [2020-09-24 17:07:35,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 17:07:35,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:35,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 17:07:35,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-09-24 17:07:35,254 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 22 states. [2020-09-24 17:07:37,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:37,425 INFO L93 Difference]: Finished difference Result 223 states and 237 transitions. [2020-09-24 17:07:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-24 17:07:37,426 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-09-24 17:07:37,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:37,428 INFO L225 Difference]: With dead ends: 223 [2020-09-24 17:07:37,428 INFO L226 Difference]: Without dead ends: 210 [2020-09-24 17:07:37,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=372, Invalid=2078, Unknown=0, NotChecked=0, Total=2450 [2020-09-24 17:07:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-24 17:07:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 154. [2020-09-24 17:07:37,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-24 17:07:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2020-09-24 17:07:37,436 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 58 [2020-09-24 17:07:37,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:37,437 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2020-09-24 17:07:37,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 17:07:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2020-09-24 17:07:37,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 17:07:37,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:37,438 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:07:37,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 17:07:37,438 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:37,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:37,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1049071675, now seen corresponding path program 1 times [2020-09-24 17:07:37,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:37,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153439318] [2020-09-24 17:07:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:07:37,459 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:07:37,459 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:07:37,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 17:07:37,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:07:37 BoogieIcfgContainer [2020-09-24 17:07:37,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:07:37,489 INFO L168 Benchmark]: Toolchain (without parser) took 34089.55 ms. Allocated memory was 140.5 MB in the beginning and 498.6 MB in the end (delta: 358.1 MB). Free memory was 102.3 MB in the beginning and 300.5 MB in the end (delta: -198.1 MB). Peak memory consumption was 160.0 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:37,490 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:07:37,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.87 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 170.6 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:37,492 INFO L168 Benchmark]: Boogie Preprocessor took 92.12 ms. Allocated memory is still 203.9 MB. Free memory was 170.6 MB in the beginning and 167.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:37,492 INFO L168 Benchmark]: RCFGBuilder took 735.34 ms. Allocated memory is still 203.9 MB. Free memory was 167.9 MB in the beginning and 119.8 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:37,493 INFO L168 Benchmark]: TraceAbstraction took 32546.19 ms. Allocated memory was 203.9 MB in the beginning and 498.6 MB in the end (delta: 294.6 MB). Free memory was 119.2 MB in the beginning and 300.5 MB in the end (delta: -181.3 MB). Peak memory consumption was 113.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:37,497 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 706.87 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 170.6 MB in the end (delta: -68.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.12 ms. Allocated memory is still 203.9 MB. Free memory was 170.6 MB in the beginning and 167.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 735.34 ms. Allocated memory is still 203.9 MB. Free memory was 167.9 MB in the beginning and 119.8 MB in the end (delta: 48.1 MB). Peak memory consumption was 48.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32546.19 ms. Allocated memory was 203.9 MB in the beginning and 498.6 MB in the end (delta: 294.6 MB). Free memory was 119.2 MB in the beginning and 300.5 MB in the end (delta: -181.3 MB). Peak memory consumption was 113.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] COND TRUE __VERIFIER_nondet_int() [L526] p->h = 1 [L527] t = (List) malloc(sizeof(struct node)) [L528] COND FALSE !(t == 0) [L529] p->n = t [L530] EXPR p->n [L530] p = p->n [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] COND TRUE __VERIFIER_nondet_int() [L533] p->h = 2 [L534] t = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(t == 0) [L536] p->n = t [L537] EXPR p->n [L537] p = p->n [L532] COND FALSE !(__VERIFIER_nondet_int()) [L539] p->h = 3 [L540] p = a [L541] EXPR p->h [L541] COND FALSE !(p->h == 2) [L543] EXPR p->h [L543] COND TRUE p->h == 1 [L544] EXPR p->n [L544] p = p->n [L543] EXPR p->h [L543] COND FALSE !(p->h == 1) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.4s, OverallIterations: 16, TraceHistogramMax: 3, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 875 SDtfs, 3333 SDslu, 6752 SDs, 0 SdLazy, 5717 SolverSat, 532 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 420 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 735 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.2s InterpolantComputationTime, 743 NumberOfCodeBlocks, 743 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 670 ConstructedInterpolants, 0 QuantifiedInterpolants, 311313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 26/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...