/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 21:44:49,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 21:44:49,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 21:44:49,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 21:44:49,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 21:44:49,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 21:44:49,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 21:44:49,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 21:44:49,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 21:44:49,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 21:44:49,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 21:44:49,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 21:44:49,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 21:44:49,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 21:44:49,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 21:44:49,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 21:44:49,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 21:44:49,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 21:44:49,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 21:44:49,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 21:44:49,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 21:44:49,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 21:44:49,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 21:44:49,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 21:44:49,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 21:44:49,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 21:44:49,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 21:44:49,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 21:44:49,929 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 21:44:49,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 21:44:49,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 21:44:49,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 21:44:49,957 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 21:44:49,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 21:44:49,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 21:44:49,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 21:44:49,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 21:44:49,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 21:44:49,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 21:44:49,958 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 21:44:49,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 21:44:49,959 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 21:44:49,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 21:44:49,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 21:44:49,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 21:44:49,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 21:44:49,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 21:44:49,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 21:44:49,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 21:44:49,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 21:44:49,960 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 21:44:49,960 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 21:44:50,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 21:44:50,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 21:44:50,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 21:44:50,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 21:44:50,382 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 21:44:50,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound50.c [2021-05-02 21:44:50,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40afac612/a6ba5c3b103848ba871363e711978996/FLAG6243dcc86 [2021-05-02 21:44:50,967 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 21:44:50,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound50.c [2021-05-02 21:44:50,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40afac612/a6ba5c3b103848ba871363e711978996/FLAG6243dcc86 [2021-05-02 21:44:51,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40afac612/a6ba5c3b103848ba871363e711978996 [2021-05-02 21:44:51,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 21:44:51,351 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 21:44:51,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 21:44:51,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 21:44:51,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 21:44:51,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 09:44:51" (1/1) ... [2021-05-02 21:44:51,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c044f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:44:51, skipping insertion in model container [2021-05-02 21:44:51,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 09:44:51" (1/1) ... [2021-05-02 21:44:51,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 21:44:51,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 21:44:51,580 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound50.c[524,537] [2021-05-02 21:44:51,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 21:44:51,606 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 21:44:51,617 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound50.c[524,537] [2021-05-02 21:44:51,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 21:44:51,649 INFO L208 MainTranslator]: Completed translation [2021-05-02 21:44:51,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:44:51 WrapperNode [2021-05-02 21:44:51,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 21:44:51,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 21:44:51,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 21:44:51,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 21:44:51,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:44:51" (1/1) ... [2021-05-02 21:44:51,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:44:51" (1/1) ... [2021-05-02 21:44:51,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:44:51" (1/1) ... [2021-05-02 21:44:51,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:44:51" (1/1) ... [2021-05-02 21:44:51,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:44:51" (1/1) ... [2021-05-02 21:44:51,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:44:51" (1/1) ... [2021-05-02 21:44:51,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:44:51" (1/1) ... [2021-05-02 21:44:51,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 21:44:51,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 21:44:51,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 21:44:51,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 21:44:51,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:44:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-05-02 21:44:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 21:44:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 21:44:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 21:44:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 21:44:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 21:44:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 21:44:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 21:44:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 21:44:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 21:44:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 21:44:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 21:44:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 21:44:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 21:44:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 21:44:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 21:44:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 21:44:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 21:44:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 21:44:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 21:44:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 21:44:52,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 21:44:52,083 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 21:44:52,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:44:52 BoogieIcfgContainer [2021-05-02 21:44:52,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 21:44:52,085 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 21:44:52,085 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 21:44:52,085 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 21:44:52,087 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:44:52" (1/1) ... [2021-05-02 21:44:52,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 09:44:52 BasicIcfg [2021-05-02 21:44:52,105 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 21:44:52,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 21:44:52,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 21:44:52,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 21:44:52,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 09:44:51" (1/4) ... [2021-05-02 21:44:52,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656170bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 09:44:52, skipping insertion in model container [2021-05-02 21:44:52,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 09:44:51" (2/4) ... [2021-05-02 21:44:52,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656170bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 09:44:52, skipping insertion in model container [2021-05-02 21:44:52,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 09:44:52" (3/4) ... [2021-05-02 21:44:52,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656170bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 09:44:52, skipping insertion in model container [2021-05-02 21:44:52,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 09:44:52" (4/4) ... [2021-05-02 21:44:52,110 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound50.cJordan [2021-05-02 21:44:52,113 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 21:44:52,115 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 21:44:52,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 21:44:52,151 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 21:44:52,151 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 21:44:52,151 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 21:44:52,152 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 21:44:52,152 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 21:44:52,152 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 21:44:52,152 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 21:44:52,152 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 21:44:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:44:52,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 21:44:52,169 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:44:52,169 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:44:52,170 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:44:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:44:52,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1119019339, now seen corresponding path program 1 times [2021-05-02 21:44:52,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:44:52,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616365542] [2021-05-02 21:44:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:44:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:44:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 21:44:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:44:52,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 21:44:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:44:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:44:52,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:44:52,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616365542] [2021-05-02 21:44:52,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616365542] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:44:52,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:44:52,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 21:44:52,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695332465] [2021-05-02 21:44:52,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 21:44:52,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:44:52,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 21:44:52,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 21:44:52,446 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:44:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:44:52,521 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-05-02 21:44:52,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 21:44:52,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-02 21:44:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:44:52,536 INFO L225 Difference]: With dead ends: 33 [2021-05-02 21:44:52,536 INFO L226 Difference]: Without dead ends: 28 [2021-05-02 21:44:52,537 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 21:44:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-02 21:44:52,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-05-02 21:44:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:44:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-05-02 21:44:52,557 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2021-05-02 21:44:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:44:52,557 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-05-02 21:44:52,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:44:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-05-02 21:44:52,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 21:44:52,558 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:44:52,558 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:44:52,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 21:44:52,559 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:44:52,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:44:52,559 INFO L82 PathProgramCache]: Analyzing trace with hash -496973861, now seen corresponding path program 1 times [2021-05-02 21:44:52,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:44:52,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068729719] [2021-05-02 21:44:52,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:44:52,570 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:44:52,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899518665] [2021-05-02 21:44:52,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:44:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:44:52,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 21:44:52,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:44:52,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:52,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:52,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:52,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:52,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:44:52,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:44:52,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068729719] [2021-05-02 21:44:52,711 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:44:52,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899518665] [2021-05-02 21:44:52,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899518665] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:44:52,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:44:52,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 21:44:52,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725869962] [2021-05-02 21:44:52,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 21:44:52,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:44:52,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 21:44:52,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 21:44:52,714 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 21:44:52,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:44:52,722 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-05-02 21:44:52,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 21:44:52,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-05-02 21:44:52,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:44:52,724 INFO L225 Difference]: With dead ends: 29 [2021-05-02 21:44:52,724 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 21:44:52,724 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 21:44:52,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 21:44:52,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 21:44:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:44:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-05-02 21:44:52,728 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2021-05-02 21:44:52,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:44:52,729 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-05-02 21:44:52,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 21:44:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-05-02 21:44:52,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 21:44:52,729 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:44:52,729 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:44:52,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 21:44:52,947 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:44:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:44:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash -495871594, now seen corresponding path program 1 times [2021-05-02 21:44:52,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:44:52,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076229538] [2021-05-02 21:44:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:44:52,957 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:44:52,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511889640] [2021-05-02 21:44:52,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:44:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:44:53,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 21:44:53,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:44:53,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:44:53,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:44:53,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076229538] [2021-05-02 21:44:53,130 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:44:53,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511889640] [2021-05-02 21:44:53,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511889640] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:44:53,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:44:53,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 21:44:53,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396969763] [2021-05-02 21:44:53,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 21:44:53,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:44:53,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 21:44:53,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 21:44:53,132 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:44:53,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:44:53,230 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-05-02 21:44:53,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 21:44:53,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-05-02 21:44:53,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:44:53,231 INFO L225 Difference]: With dead ends: 40 [2021-05-02 21:44:53,231 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 21:44:53,231 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 21:44:53,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 21:44:53,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2021-05-02 21:44:53,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 21:44:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-05-02 21:44:53,236 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2021-05-02 21:44:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:44:53,236 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-05-02 21:44:53,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 21:44:53,236 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-05-02 21:44:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 21:44:53,237 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:44:53,237 INFO L523 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] [2021-05-02 21:44:53,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:44:53,455 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:44:53,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:44:53,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1025358414, now seen corresponding path program 1 times [2021-05-02 21:44:53,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:44:53,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381064518] [2021-05-02 21:44:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:44:53,466 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:44:53,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004523694] [2021-05-02 21:44:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:44:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:44:53,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 21:44:53,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:44:53,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:44:53,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:44:53,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381064518] [2021-05-02 21:44:53,772 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:44:53,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004523694] [2021-05-02 21:44:53,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004523694] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:44:53,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:44:53,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 21:44:53,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584144309] [2021-05-02 21:44:53,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 21:44:53,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:44:53,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 21:44:53,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 21:44:53,774 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:44:54,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:44:54,056 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2021-05-02 21:44:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 21:44:54,056 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-05-02 21:44:54,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:44:54,058 INFO L225 Difference]: With dead ends: 49 [2021-05-02 21:44:54,058 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 21:44:54,058 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 205.8ms TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-05-02 21:44:54,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 21:44:54,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-05-02 21:44:54,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 29 states have internal predecessors, (36), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:44:54,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2021-05-02 21:44:54,063 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 24 [2021-05-02 21:44:54,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:44:54,063 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2021-05-02 21:44:54,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 9 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:44:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2021-05-02 21:44:54,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 21:44:54,064 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:44:54,064 INFO L523 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] [2021-05-02 21:44:54,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:44:54,280 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:44:54,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:44:54,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2117889998, now seen corresponding path program 1 times [2021-05-02 21:44:54,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:44:54,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937824251] [2021-05-02 21:44:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:44:54,298 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:44:54,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611177784] [2021-05-02 21:44:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:44:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:44:54,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 21:44:54,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:44:54,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:54,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:54,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:54,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:54,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:54,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:54,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:54,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:44:54,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:44:54,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937824251] [2021-05-02 21:44:54,416 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:44:54,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611177784] [2021-05-02 21:44:54,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611177784] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:44:54,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:44:54,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 21:44:54,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683466160] [2021-05-02 21:44:54,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 21:44:54,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:44:54,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 21:44:54,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 21:44:54,417 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 21:44:54,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:44:54,438 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-05-02 21:44:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 21:44:54,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2021-05-02 21:44:54,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:44:54,440 INFO L225 Difference]: With dead ends: 48 [2021-05-02 21:44:54,440 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 21:44:54,440 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 21:44:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 21:44:54,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 21:44:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 21:44:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2021-05-02 21:44:54,444 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 27 [2021-05-02 21:44:54,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:44:54,444 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2021-05-02 21:44:54,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 21:44:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2021-05-02 21:44:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 21:44:54,445 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:44:54,445 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:44:54,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:44:54,657 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:44:54,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:44:54,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2116787731, now seen corresponding path program 1 times [2021-05-02 21:44:54,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:44:54,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313469269] [2021-05-02 21:44:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:44:54,681 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:44:54,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481788164] [2021-05-02 21:44:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:44:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:44:54,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 21:44:54,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:44:54,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:54,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:54,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:44:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:44:55,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:44:55,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313469269] [2021-05-02 21:44:55,216 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:44:55,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481788164] [2021-05-02 21:44:55,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481788164] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:44:55,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:44:55,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:44:55,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18864013] [2021-05-02 21:44:55,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:44:55,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:44:55,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:44:55,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:44:55,217 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:44:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:44:59,672 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2021-05-02 21:44:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:44:59,673 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2021-05-02 21:44:59,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:44:59,673 INFO L225 Difference]: With dead ends: 61 [2021-05-02 21:44:59,674 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 21:44:59,674 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 121.1ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:44:59,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 21:44:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2021-05-02 21:44:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 40 states have (on average 1.3) internal successors, (52), 42 states have internal predecessors, (52), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 21:44:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2021-05-02 21:44:59,677 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 27 [2021-05-02 21:44:59,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:44:59,678 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2021-05-02 21:44:59,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:44:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2021-05-02 21:44:59,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 21:44:59,678 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:44:59,678 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:44:59,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:44:59,879 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:44:59,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:44:59,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1857795251, now seen corresponding path program 1 times [2021-05-02 21:44:59,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:44:59,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830135667] [2021-05-02 21:44:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:44:59,887 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:44:59,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265934696] [2021-05-02 21:44:59,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:44:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:44:59,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 21:44:59,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:45:00,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:00,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:00,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:00,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:00,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:45:00,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:45:00,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830135667] [2021-05-02 21:45:00,123 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:45:00,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265934696] [2021-05-02 21:45:00,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265934696] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:45:00,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:45:00,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:45:00,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453674369] [2021-05-02 21:45:00,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:45:00,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:45:00,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:45:00,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:45:00,125 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:45:05,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:45:05,175 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2021-05-02 21:45:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:45:05,175 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-05-02 21:45:05,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:45:05,176 INFO L225 Difference]: With dead ends: 64 [2021-05-02 21:45:05,176 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 21:45:05,176 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 127.9ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:45:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 21:45:05,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 21:45:05,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.297872340425532) internal successors, (61), 49 states have internal predecessors, (61), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 21:45:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2021-05-02 21:45:05,180 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 28 [2021-05-02 21:45:05,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:45:05,181 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2021-05-02 21:45:05,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:45:05,181 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2021-05-02 21:45:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 21:45:05,181 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:45:05,181 INFO L523 BasicCegarLoop]: trace histogram [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] [2021-05-02 21:45:05,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:45:05,397 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:45:05,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:45:05,398 INFO L82 PathProgramCache]: Analyzing trace with hash -2004143825, now seen corresponding path program 1 times [2021-05-02 21:45:05,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:45:05,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327605375] [2021-05-02 21:45:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:45:05,418 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:45:05,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958243751] [2021-05-02 21:45:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:45:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:45:05,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 21:45:05,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:45:05,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:05,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:05,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:05,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:45:05,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:45:05,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327605375] [2021-05-02 21:45:05,662 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:45:05,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958243751] [2021-05-02 21:45:05,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958243751] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:45:05,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:45:05,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 21:45:05,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059767800] [2021-05-02 21:45:05,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 21:45:05,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:45:05,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 21:45:05,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:45:05,663 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:45:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:45:10,221 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2021-05-02 21:45:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 21:45:10,222 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 21:45:10,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:45:10,223 INFO L225 Difference]: With dead ends: 77 [2021-05-02 21:45:10,223 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 21:45:10,223 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:45:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 21:45:10,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2021-05-02 21:45:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.290909090909091) internal successors, (71), 57 states have internal predecessors, (71), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 21:45:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2021-05-02 21:45:10,228 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 29 [2021-05-02 21:45:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:45:10,228 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2021-05-02 21:45:10,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:45:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2021-05-02 21:45:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 21:45:10,229 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:45:10,229 INFO L523 BasicCegarLoop]: trace histogram [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] [2021-05-02 21:45:10,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:45:10,441 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:45:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:45:10,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1116640144, now seen corresponding path program 1 times [2021-05-02 21:45:10,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:45:10,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785062567] [2021-05-02 21:45:10,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:45:10,474 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:45:10,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104829331] [2021-05-02 21:45:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:45:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:45:10,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 21:45:10,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:45:10,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:10,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:10,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:10,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:45:10,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:45:10,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785062567] [2021-05-02 21:45:10,637 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:45:10,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104829331] [2021-05-02 21:45:10,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104829331] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:45:10,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:45:10,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 21:45:10,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812716274] [2021-05-02 21:45:10,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 21:45:10,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:45:10,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 21:45:10,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 21:45:10,639 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:45:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:45:10,788 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2021-05-02 21:45:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 21:45:10,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-05-02 21:45:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:45:10,790 INFO L225 Difference]: With dead ends: 85 [2021-05-02 21:45:10,790 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 21:45:10,790 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 63.7ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-02 21:45:10,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 21:45:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2021-05-02 21:45:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 55 states have internal predecessors, (69), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 21:45:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2021-05-02 21:45:10,795 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 29 [2021-05-02 21:45:10,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:45:10,795 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2021-05-02 21:45:10,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 21:45:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2021-05-02 21:45:10,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 21:45:10,796 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:45:10,796 INFO L523 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] [2021-05-02 21:45:10,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 21:45:10,998 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:45:10,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:45:10,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1454559031, now seen corresponding path program 1 times [2021-05-02 21:45:10,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:45:10,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636257555] [2021-05-02 21:45:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:45:11,007 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:45:11,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180199113] [2021-05-02 21:45:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:45:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:45:11,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 21:45:11,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:45:11,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 21:45:11,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:45:11,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636257555] [2021-05-02 21:45:11,156 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:45:11,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180199113] [2021-05-02 21:45:11,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180199113] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 21:45:11,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 21:45:11,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 21:45:11,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202251917] [2021-05-02 21:45:11,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 21:45:11,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:45:11,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 21:45:11,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 21:45:11,158 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:45:11,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:45:11,252 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2021-05-02 21:45:11,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 21:45:11,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2021-05-02 21:45:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:45:11,255 INFO L225 Difference]: With dead ends: 90 [2021-05-02 21:45:11,255 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 21:45:11,255 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-05-02 21:45:11,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 21:45:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2021-05-02 21:45:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 66 states have internal predecessors, (84), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 21:45:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2021-05-02 21:45:11,274 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 33 [2021-05-02 21:45:11,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:45:11,274 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2021-05-02 21:45:11,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:45:11,274 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2021-05-02 21:45:11,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 21:45:11,275 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:45:11,275 INFO L523 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] [2021-05-02 21:45:11,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:45:11,496 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:45:11,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:45:11,497 INFO L82 PathProgramCache]: Analyzing trace with hash 482870923, now seen corresponding path program 1 times [2021-05-02 21:45:11,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:45:11,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775634305] [2021-05-02 21:45:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:45:11,504 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:45:11,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124536297] [2021-05-02 21:45:11,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:45:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:45:11,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 21:45:11,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:45:11,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 21:45:11,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:45:11,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775634305] [2021-05-02 21:45:11,961 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:45:11,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124536297] [2021-05-02 21:45:11,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124536297] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:45:11,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:45:11,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 21:45:11,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126176108] [2021-05-02 21:45:11,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 21:45:11,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:45:11,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 21:45:11,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-05-02 21:45:11,963 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:45:14,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:45:14,279 INFO L93 Difference]: Finished difference Result 101 states and 135 transitions. [2021-05-02 21:45:14,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 21:45:14,279 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2021-05-02 21:45:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:45:14,280 INFO L225 Difference]: With dead ends: 101 [2021-05-02 21:45:14,280 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 21:45:14,280 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 318.6ms TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-05-02 21:45:14,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 21:45:14,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2021-05-02 21:45:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 73 states have internal predecessors, (92), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 21:45:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2021-05-02 21:45:14,284 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 35 [2021-05-02 21:45:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:45:14,285 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2021-05-02 21:45:14,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:45:14,285 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2021-05-02 21:45:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 21:45:14,286 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:45:14,286 INFO L523 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] [2021-05-02 21:45:14,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 21:45:14,490 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:45:14,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:45:14,491 INFO L82 PathProgramCache]: Analyzing trace with hash 189467916, now seen corresponding path program 1 times [2021-05-02 21:45:14,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:45:14,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779346078] [2021-05-02 21:45:14,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:45:14,497 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:45:14,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137380705] [2021-05-02 21:45:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:45:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 21:45:14,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 21:45:14,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:45:14,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:14,780 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 21:45:14,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:45:14,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779346078] [2021-05-02 21:45:14,780 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:45:14,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137380705] [2021-05-02 21:45:14,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137380705] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:45:14,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:45:14,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 21:45:14,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825714650] [2021-05-02 21:45:14,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 21:45:14,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:45:14,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 21:45:14,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-02 21:45:14,782 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:45:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:45:15,725 INFO L93 Difference]: Finished difference Result 121 states and 161 transitions. [2021-05-02 21:45:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 21:45:15,726 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2021-05-02 21:45:15,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:45:15,727 INFO L225 Difference]: With dead ends: 121 [2021-05-02 21:45:15,727 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 21:45:15,727 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 400.8ms TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-05-02 21:45:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 21:45:15,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 101. [2021-05-02 21:45:15,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 79 states have internal predecessors, (101), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 21:45:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2021-05-02 21:45:15,732 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 35 [2021-05-02 21:45:15,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:45:15,732 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2021-05-02 21:45:15,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 21:45:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2021-05-02 21:45:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 21:45:15,733 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:45:15,733 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:45:15,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 21:45:15,949 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:45:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:45:15,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1979136443, now seen corresponding path program 2 times [2021-05-02 21:45:15,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:45:15,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799187518] [2021-05-02 21:45:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:45:15,958 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:45:15,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98129265] [2021-05-02 21:45:15,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:45:16,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:45:16,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:45:16,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 21:45:16,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:45:16,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 21:45:16,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 21:45:16,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799187518] [2021-05-02 21:45:16,088 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 21:45:16,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98129265] [2021-05-02 21:45:16,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98129265] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 21:45:16,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 21:45:16,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 21:45:16,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410927662] [2021-05-02 21:45:16,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 21:45:16,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 21:45:16,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 21:45:16,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 21:45:16,091 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:45:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 21:45:16,141 INFO L93 Difference]: Finished difference Result 120 states and 157 transitions. [2021-05-02 21:45:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 21:45:16,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2021-05-02 21:45:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 21:45:16,145 INFO L225 Difference]: With dead ends: 120 [2021-05-02 21:45:16,145 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 21:45:16,145 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 21:45:16,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 21:45:16,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-02 21:45:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.3297872340425532) internal successors, (125), 96 states have internal predecessors, (125), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 21:45:16,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-05-02 21:45:16,150 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 36 [2021-05-02 21:45:16,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 21:45:16,150 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-05-02 21:45:16,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 21:45:16,151 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-05-02 21:45:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 21:45:16,154 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 21:45:16,154 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 21:45:16,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:45:16,370 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 21:45:16,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 21:45:16,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1980238710, now seen corresponding path program 2 times [2021-05-02 21:45:16,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 21:45:16,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287070710] [2021-05-02 21:45:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 21:45:16,377 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 21:45:16,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012743375] [2021-05-02 21:45:16,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 21:45:16,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 21:45:16,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 21:45:16,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 21:45:16,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 21:45:16,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:16,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:27,019 WARN L205 SmtUtils]: Spent 8.39 s on a formula simplification that was a NOOP. DAG size: 26 [2021-05-02 21:45:41,477 WARN L205 SmtUtils]: Spent 14.39 s on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2021-05-02 21:45:41,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:41,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:43,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:43,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:43,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:43,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:43,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 21:45:43,117 WARN L159 QuantifierPusher]: Ignoring assumption.