/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/loops/eureka_05.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 17:37:08,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 17:37:08,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 17:37:08,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 17:37:08,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 17:37:08,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 17:37:08,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 17:37:08,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 17:37:08,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 17:37:08,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 17:37:08,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 17:37:08,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 17:37:08,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 17:37:08,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 17:37:08,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 17:37:08,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 17:37:08,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 17:37:08,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 17:37:08,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 17:37:08,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 17:37:08,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 17:37:08,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 17:37:08,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 17:37:08,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 17:37:08,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 17:37:08,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 17:37:08,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 17:37:08,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 17:37:08,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 17:37:08,371 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 17:37:08,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 17:37:08,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 17:37:08,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 17:37:08,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 17:37:08,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 17:37:08,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 17:37:08,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 17:37:08,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 17:37:08,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 17:37:08,375 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 17:37:08,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 17:37:08,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 17:37:08,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 17:37:08,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 17:37:08,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 17:37:08,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 17:37:08,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 17:37:08,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 17:37:08,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 17:37:08,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 17:37:08,377 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 17:37:08,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 17:37:08,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 17:37:08,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 17:37:08,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 17:37:08,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 17:37:08,624 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 17:37:08,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05.i [2021-05-02 17:37:08,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882fa8387/8dec162d8aa94dcf909d34049535dac6/FLAG82c6064e5 [2021-05-02 17:37:09,080 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 17:37:09,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i [2021-05-02 17:37:09,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882fa8387/8dec162d8aa94dcf909d34049535dac6/FLAG82c6064e5 [2021-05-02 17:37:09,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882fa8387/8dec162d8aa94dcf909d34049535dac6 [2021-05-02 17:37:09,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 17:37:09,104 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 17:37:09,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 17:37:09,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 17:37:09,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 17:37:09,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:37:09" (1/1) ... [2021-05-02 17:37:09,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b13737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:37:09, skipping insertion in model container [2021-05-02 17:37:09,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:37:09" (1/1) ... [2021-05-02 17:37:09,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 17:37:09,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 17:37:09,240 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i[810,823] [2021-05-02 17:37:09,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:37:09,260 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 17:37:09,311 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i[810,823] [2021-05-02 17:37:09,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:37:09,342 INFO L208 MainTranslator]: Completed translation [2021-05-02 17:37:09,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:37:09 WrapperNode [2021-05-02 17:37:09,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 17:37:09,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 17:37:09,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 17:37:09,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 17:37:09,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:37:09" (1/1) ... [2021-05-02 17:37:09,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:37:09" (1/1) ... [2021-05-02 17:37:09,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:37:09" (1/1) ... [2021-05-02 17:37:09,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:37:09" (1/1) ... [2021-05-02 17:37:09,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:37:09" (1/1) ... [2021-05-02 17:37:09,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:37:09" (1/1) ... [2021-05-02 17:37:09,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:37:09" (1/1) ... [2021-05-02 17:37:09,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 17:37:09,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 17:37:09,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 17:37:09,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 17:37:09,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:37:09" (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 17:37:09,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 17:37:09,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 17:37:09,498 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 17:37:09,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 17:37:09,499 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2021-05-02 17:37:09,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 17:37:09,499 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 17:37:09,499 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 17:37:09,499 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 17:37:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 17:37:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 17:37:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 17:37:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 17:37:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2021-05-02 17:37:09,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 17:37:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 17:37:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 17:37:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 17:37:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 17:37:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 17:37:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 17:37:09,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 17:37:09,754 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-05-02 17:37:09,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:37:09 BoogieIcfgContainer [2021-05-02 17:37:09,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 17:37:09,756 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 17:37:09,756 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 17:37:09,757 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 17:37:09,758 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:37:09" (1/1) ... [2021-05-02 17:37:09,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:37:09 BasicIcfg [2021-05-02 17:37:09,770 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 17:37:09,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 17:37:09,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 17:37:09,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 17:37:09,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 05:37:09" (1/4) ... [2021-05-02 17:37:09,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f34966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:37:09, skipping insertion in model container [2021-05-02 17:37:09,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:37:09" (2/4) ... [2021-05-02 17:37:09,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f34966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:37:09, skipping insertion in model container [2021-05-02 17:37:09,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:37:09" (3/4) ... [2021-05-02 17:37:09,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f34966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:37:09, skipping insertion in model container [2021-05-02 17:37:09,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:37:09" (4/4) ... [2021-05-02 17:37:09,775 INFO L111 eAbstractionObserver]: Analyzing ICFG eureka_05.iJordan [2021-05-02 17:37:09,779 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 17:37:09,782 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 17:37:09,814 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 17:37:09,826 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 17:37:09,826 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 17:37:09,826 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 17:37:09,826 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 17:37:09,826 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 17:37:09,826 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 17:37:09,826 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 17:37:09,826 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 17:37:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 17:37:09,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 17:37:09,845 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:09,845 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 17:37:09,845 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:09,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:09,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1326105583, now seen corresponding path program 1 times [2021-05-02 17:37:09,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:09,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486954305] [2021-05-02 17:37:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:10,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:10,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:37:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:10,089 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 17:37:10,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:10,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486954305] [2021-05-02 17:37:10,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486954305] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:37:10,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:37:10,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 17:37:10,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529062245] [2021-05-02 17:37:10,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 17:37:10,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:10,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 17:37:10,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 17:37:10,105 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:37:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:10,246 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2021-05-02 17:37:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 17:37:10,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-05-02 17:37:10,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:10,253 INFO L225 Difference]: With dead ends: 51 [2021-05-02 17:37:10,253 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 17:37:10,254 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 17:37:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 17:37:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2021-05-02 17:37:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-05-02 17:37:10,280 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 18 [2021-05-02 17:37:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:10,280 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-05-02 17:37:10,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:37:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-05-02 17:37:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-02 17:37:10,281 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:10,281 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 17:37:10,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 17:37:10,281 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:10,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:10,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1290489969, now seen corresponding path program 1 times [2021-05-02 17:37:10,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:10,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438855110] [2021-05-02 17:37:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:10,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:10,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:37:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:10,389 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 17:37:10,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:10,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438855110] [2021-05-02 17:37:10,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438855110] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:37:10,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:37:10,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 17:37:10,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736020340] [2021-05-02 17:37:10,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 17:37:10,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:10,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 17:37:10,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 17:37:10,391 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:37:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:10,531 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-05-02 17:37:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 17:37:10,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-05-02 17:37:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:10,532 INFO L225 Difference]: With dead ends: 38 [2021-05-02 17:37:10,532 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 17:37:10,532 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 77.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-02 17:37:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 17:37:10,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2021-05-02 17:37:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-05-02 17:37:10,535 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2021-05-02 17:37:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:10,535 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-05-02 17:37:10,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:37:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-05-02 17:37:10,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 17:37:10,536 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:10,536 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:37:10,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 17:37:10,536 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:10,537 INFO L82 PathProgramCache]: Analyzing trace with hash 43929779, now seen corresponding path program 1 times [2021-05-02 17:37:10,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:10,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364166460] [2021-05-02 17:37:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:10,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:10,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-05-02 17:37:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 17:37:10,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:10,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364166460] [2021-05-02 17:37:10,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364166460] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:10,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960522557] [2021-05-02 17:37:10,617 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 17:37:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:10,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 17:37:10,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:37:10,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:10,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:10,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 17:37:10,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960522557] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:10,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:37:10,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2021-05-02 17:37:10,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213635302] [2021-05-02 17:37:10,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 17:37:10,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:10,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 17:37:10,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-02 17:37:10,815 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 17:37:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:10,931 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2021-05-02 17:37:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 17:37:10,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2021-05-02 17:37:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:10,932 INFO L225 Difference]: With dead ends: 40 [2021-05-02 17:37:10,933 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 17:37:10,933 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-02 17:37:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 17:37:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2021-05-02 17:37:10,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-05-02 17:37:10,936 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2021-05-02 17:37:10,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:10,936 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-05-02 17:37:10,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 17:37:10,936 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-05-02 17:37:10,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-02 17:37:10,936 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:10,936 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] [2021-05-02 17:37:11,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 17:37:11,154 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:11,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:11,155 INFO L82 PathProgramCache]: Analyzing trace with hash 395462773, now seen corresponding path program 2 times [2021-05-02 17:37:11,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:11,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287780040] [2021-05-02 17:37:11,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:11,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:11,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-02 17:37:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 17:37:11,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:11,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287780040] [2021-05-02 17:37:11,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287780040] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:37:11,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:37:11,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 17:37:11,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393399058] [2021-05-02 17:37:11,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 17:37:11,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:11,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 17:37:11,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 17:37:11,276 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:37:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:11,526 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2021-05-02 17:37:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 17:37:11,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-05-02 17:37:11,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:11,528 INFO L225 Difference]: With dead ends: 38 [2021-05-02 17:37:11,528 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 17:37:11,529 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 175.3ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-05-02 17:37:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 17:37:11,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2021-05-02 17:37:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-05-02 17:37:11,536 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2021-05-02 17:37:11,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:11,537 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-05-02 17:37:11,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:37:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-05-02 17:37:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-02 17:37:11,538 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:11,538 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] [2021-05-02 17:37:11,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 17:37:11,538 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:11,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:11,539 INFO L82 PathProgramCache]: Analyzing trace with hash 213582794, now seen corresponding path program 1 times [2021-05-02 17:37:11,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:11,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396099513] [2021-05-02 17:37:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:11,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-02 17:37:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 17:37:11,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:11,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396099513] [2021-05-02 17:37:11,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396099513] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:11,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571061618] [2021-05-02 17:37:11,639 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 17:37:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:11,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 17:37:11,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:37:11,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:11,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:11,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:11,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 17:37:11,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571061618] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:11,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:37:11,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-05-02 17:37:11,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128545497] [2021-05-02 17:37:11,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 17:37:11,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:11,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 17:37:11,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 17:37:11,783 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 17:37:12,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:12,055 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2021-05-02 17:37:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 17:37:12,056 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 26 [2021-05-02 17:37:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:12,056 INFO L225 Difference]: With dead ends: 44 [2021-05-02 17:37:12,056 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 17:37:12,057 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 240.0ms TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-05-02 17:37:12,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 17:37:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2021-05-02 17:37:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:12,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-05-02 17:37:12,059 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 26 [2021-05-02 17:37:12,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:12,059 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-05-02 17:37:12,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 17:37:12,059 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-05-02 17:37:12,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 17:37:12,060 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:12,060 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 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 17:37:12,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:37:12,273 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:12,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:12,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1061191265, now seen corresponding path program 1 times [2021-05-02 17:37:12,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:12,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992106621] [2021-05-02 17:37:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:12,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:12,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:37:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 17:37:12,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:12,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992106621] [2021-05-02 17:37:12,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992106621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:12,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342924701] [2021-05-02 17:37:12,372 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 17:37:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:12,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 17:37:12,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:37:12,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:12,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:12,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:12,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:12,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:12,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 17:37:12,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342924701] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:12,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:37:12,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2021-05-02 17:37:12,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372812074] [2021-05-02 17:37:12,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 17:37:12,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:12,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 17:37:12,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-05-02 17:37:12,529 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 17:37:12,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:12,915 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2021-05-02 17:37:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 17:37:12,915 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2021-05-02 17:37:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:12,916 INFO L225 Difference]: With dead ends: 49 [2021-05-02 17:37:12,916 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 17:37:12,916 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 328.8ms TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2021-05-02 17:37:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 17:37:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2021-05-02 17:37:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2021-05-02 17:37:12,918 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 31 [2021-05-02 17:37:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:12,918 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2021-05-02 17:37:12,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 17:37:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2021-05-02 17:37:12,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 17:37:12,919 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:12,919 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:37:13,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:37:13,131 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:13,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:13,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1967959698, now seen corresponding path program 2 times [2021-05-02 17:37:13,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:13,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889727155] [2021-05-02 17:37:13,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:13,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 17:37:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:13,236 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 17:37:13,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:13,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889727155] [2021-05-02 17:37:13,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889727155] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:13,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177559589] [2021-05-02 17:37:13,236 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 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 17:37:13,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:37:13,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:37:13,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 17:37:13,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:37:13,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:13,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:13,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:13,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:13,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:13,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:13,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:13,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:13,382 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-02 17:37:13,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177559589] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:13,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:37:13,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2021-05-02 17:37:13,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827321700] [2021-05-02 17:37:13,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 17:37:13,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:13,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 17:37:13,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-05-02 17:37:13,384 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 13 states have internal predecessors, (46), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 17:37:13,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:13,880 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2021-05-02 17:37:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 17:37:13,880 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 13 states have internal predecessors, (46), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2021-05-02 17:37:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:13,881 INFO L225 Difference]: With dead ends: 69 [2021-05-02 17:37:13,881 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 17:37:13,881 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 337.9ms TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2021-05-02 17:37:13,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 17:37:13,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2021-05-02 17:37:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-05-02 17:37:13,884 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 36 [2021-05-02 17:37:13,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:13,884 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-05-02 17:37:13,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 13 states have internal predecessors, (46), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-02 17:37:13,885 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-05-02 17:37:13,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 17:37:13,885 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:13,885 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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 17:37:14,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:37:14,102 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:14,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:14,103 INFO L82 PathProgramCache]: Analyzing trace with hash -780133381, now seen corresponding path program 3 times [2021-05-02 17:37:14,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:14,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279136048] [2021-05-02 17:37:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:14,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:14,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 17:37:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 17:37:14,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:14,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279136048] [2021-05-02 17:37:14,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279136048] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:14,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200406590] [2021-05-02 17:37:14,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 17:37:14,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 17:37:14,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:37:14,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 17:37:14,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:37:14,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:14,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:14,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:14,350 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 17:37:14,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200406590] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:14,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:37:14,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2021-05-02 17:37:14,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913159605] [2021-05-02 17:37:14,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 17:37:14,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:14,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 17:37:14,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-05-02 17:37:14,353 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 17:37:14,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:14,881 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2021-05-02 17:37:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 17:37:14,882 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2021-05-02 17:37:14,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:14,882 INFO L225 Difference]: With dead ends: 71 [2021-05-02 17:37:14,882 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 17:37:14,883 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 412.7ms TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2021-05-02 17:37:14,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 17:37:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2021-05-02 17:37:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2021-05-02 17:37:14,895 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 41 [2021-05-02 17:37:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:14,895 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2021-05-02 17:37:14,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 17:37:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2021-05-02 17:37:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 17:37:14,896 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:14,896 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 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 17:37:15,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:37:15,107 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:15,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:15,107 INFO L82 PathProgramCache]: Analyzing trace with hash -292182650, now seen corresponding path program 4 times [2021-05-02 17:37:15,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:15,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624885075] [2021-05-02 17:37:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:15,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:15,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 17:37:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-05-02 17:37:15,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:15,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624885075] [2021-05-02 17:37:15,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624885075] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:15,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226660861] [2021-05-02 17:37:15,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 17:37:15,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:37:15,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:37:15,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 17:37:15,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:37:15,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:15,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:15,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:15,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:15,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:15,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:15,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:15,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:15,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:15,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:15,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 57 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 17:37:15,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226660861] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:15,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:37:15,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-05-02 17:37:15,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517398540] [2021-05-02 17:37:15,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 17:37:15,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:15,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 17:37:15,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-05-02 17:37:15,418 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 17:37:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:16,911 INFO L93 Difference]: Finished difference Result 137 states and 183 transitions. [2021-05-02 17:37:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 17:37:16,912 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2021-05-02 17:37:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:16,915 INFO L225 Difference]: With dead ends: 137 [2021-05-02 17:37:16,915 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 17:37:16,915 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1239.6ms TimeCoverageRelationStatistics Valid=667, Invalid=1685, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 17:37:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 17:37:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 85. [2021-05-02 17:37:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 77 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2021-05-02 17:37:16,926 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 57 [2021-05-02 17:37:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:16,927 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2021-05-02 17:37:16,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 17:37:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2021-05-02 17:37:16,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 17:37:16,932 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:16,932 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:37:17,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:37:17,151 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:17,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:17,151 INFO L82 PathProgramCache]: Analyzing trace with hash -910725029, now seen corresponding path program 5 times [2021-05-02 17:37:17,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:17,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443905791] [2021-05-02 17:37:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:17,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:17,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 17:37:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-05-02 17:37:17,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:17,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443905791] [2021-05-02 17:37:17,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443905791] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:17,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441827019] [2021-05-02 17:37:17,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 17:37:17,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-05-02 17:37:17,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:37:17,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 17:37:17,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:37:17,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:17,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:17,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:17,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:17,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:17,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:17,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:17,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 65 proven. 11 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-05-02 17:37:17,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441827019] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:17,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:37:17,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-05-02 17:37:17,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820890872] [2021-05-02 17:37:17,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 17:37:17,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:17,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 17:37:17,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-05-02 17:37:17,478 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 14 states have internal predecessors, (65), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 17:37:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:18,588 INFO L93 Difference]: Finished difference Result 142 states and 184 transitions. [2021-05-02 17:37:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 17:37:18,589 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 14 states have internal predecessors, (65), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2021-05-02 17:37:18,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:18,589 INFO L225 Difference]: With dead ends: 142 [2021-05-02 17:37:18,589 INFO L226 Difference]: Without dead ends: 142 [2021-05-02 17:37:18,590 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 893.9ms TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 17:37:18,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-05-02 17:37:18,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 89. [2021-05-02 17:37:18,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 81 states have (on average 1.2839506172839505) internal successors, (104), 81 states have internal predecessors, (104), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:18,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2021-05-02 17:37:18,593 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 61 [2021-05-02 17:37:18,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:18,593 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2021-05-02 17:37:18,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 14 states have internal predecessors, (65), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 17:37:18,593 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2021-05-02 17:37:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-02 17:37:18,593 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:18,594 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:37:18,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 17:37:18,801 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2070142192, now seen corresponding path program 6 times [2021-05-02 17:37:18,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:18,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155496475] [2021-05-02 17:37:18,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:18,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:18,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 17:37:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-05-02 17:37:18,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:18,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155496475] [2021-05-02 17:37:18,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155496475] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:18,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895735002] [2021-05-02 17:37:18,911 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 17:37:18,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-05-02 17:37:18,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:37:18,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 17:37:18,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:37:19,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:19,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:19,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-05-02 17:37:19,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895735002] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:19,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:37:19,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2021-05-02 17:37:19,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746753192] [2021-05-02 17:37:19,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 17:37:19,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:19,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 17:37:19,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-05-02 17:37:19,102 INFO L87 Difference]: Start difference. First operand 89 states and 111 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 12 states have internal predecessors, (58), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 17:37:20,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:20,072 INFO L93 Difference]: Finished difference Result 139 states and 176 transitions. [2021-05-02 17:37:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 17:37:20,073 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 12 states have internal predecessors, (58), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2021-05-02 17:37:20,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:20,074 INFO L225 Difference]: With dead ends: 139 [2021-05-02 17:37:20,074 INFO L226 Difference]: Without dead ends: 139 [2021-05-02 17:37:20,074 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 857.1ms TimeCoverageRelationStatistics Valid=337, Invalid=853, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 17:37:20,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-05-02 17:37:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 93. [2021-05-02 17:37:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.2705882352941176) internal successors, (108), 85 states have internal predecessors, (108), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 115 transitions. [2021-05-02 17:37:20,076 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 115 transitions. Word has length 64 [2021-05-02 17:37:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:20,077 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 115 transitions. [2021-05-02 17:37:20,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 12 states have internal predecessors, (58), 3 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 17:37:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 115 transitions. [2021-05-02 17:37:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 17:37:20,077 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:20,077 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:37:20,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-02 17:37:20,289 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:20,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:20,289 INFO L82 PathProgramCache]: Analyzing trace with hash -2070394267, now seen corresponding path program 7 times [2021-05-02 17:37:20,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:20,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451314370] [2021-05-02 17:37:20,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:20,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:20,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 17:37:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-05-02 17:37:20,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:20,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451314370] [2021-05-02 17:37:20,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451314370] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:20,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017832752] [2021-05-02 17:37:20,398 INFO L93 rtionOrderModulation]: Changing assertion order to 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 17:37:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:20,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 17:37:20,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:37:20,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:20,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:20,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:20,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:20,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:20,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:20,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:20,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 33 proven. 123 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-05-02 17:37:20,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017832752] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:20,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:37:20,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2021-05-02 17:37:20,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87909015] [2021-05-02 17:37:20,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 17:37:20,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:37:20,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 17:37:20,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-05-02 17:37:20,621 INFO L87 Difference]: Start difference. First operand 93 states and 115 transitions. Second operand has 16 states, 16 states have (on average 4.5) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 17:37:21,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:37:21,025 INFO L93 Difference]: Finished difference Result 113 states and 142 transitions. [2021-05-02 17:37:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 17:37:21,025 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 75 [2021-05-02 17:37:21,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:37:21,026 INFO L225 Difference]: With dead ends: 113 [2021-05-02 17:37:21,026 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 17:37:21,026 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 344.6ms TimeCoverageRelationStatistics Valid=213, Invalid=599, Unknown=0, NotChecked=0, Total=812 [2021-05-02 17:37:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 17:37:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 86. [2021-05-02 17:37:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:37:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2021-05-02 17:37:21,028 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 75 [2021-05-02 17:37:21,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:37:21,028 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2021-05-02 17:37:21,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 17:37:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2021-05-02 17:37:21,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-02 17:37:21,029 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:37:21,029 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:37:21,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:37:21,233 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:37:21,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:37:21,233 INFO L82 PathProgramCache]: Analyzing trace with hash -551286544, now seen corresponding path program 8 times [2021-05-02 17:37:21,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:37:21,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315175189] [2021-05-02 17:37:21,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:37:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:21,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:37:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:21,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 17:37:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:37:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 16 proven. 116 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-05-02 17:37:21,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:37:21,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315175189] [2021-05-02 17:37:21,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315175189] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:37:21,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444251340] [2021-05-02 17:37:21,538 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 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 17:37:21,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:37:21,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:37:21,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 17:37:21,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:37:21,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,660 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-05-02 17:37:21,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 31 [2021-05-02 17:37:21,672 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 17:37:21,681 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 17:37:21,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,713 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-05-02 17:37:21,714 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:31 [2021-05-02 17:37:21,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,973 INFO L354 Elim1Store]: treesize reduction 48, result has 40.7 percent of original size [2021-05-02 17:37:21,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 26 treesize of output 48 [2021-05-02 17:37:21,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:21,982 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 17:37:22,007 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-05-02 17:37:22,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 25 [2021-05-02 17:37:22,011 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-05-02 17:37:22,024 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-05-02 17:37:22,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 1 [2021-05-02 17:37:22,025 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-05-02 17:37:22,045 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-05-02 17:37:22,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 25 [2021-05-02 17:37:22,049 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-05-02 17:37:22,093 INFO L628 ElimStorePlain]: treesize reduction 28, result has 54.1 percent of original size [2021-05-02 17:37:22,097 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-05-02 17:37:22,098 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:105, output treesize:21 [2021-05-02 17:37:22,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-05-02 17:37:22,200 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 17:37:22,204 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 17:37:22,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,206 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 17:37:22,206 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:22 [2021-05-02 17:37:22,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-05-02 17:37:22,274 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 17:37:22,278 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 17:37:22,280 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 17:37:22,280 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:25, output treesize:3 [2021-05-02 17:37:22,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:22,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,673 WARN L860 $PredicateComparison]: unable to prove that (exists ((SelectionSort_~lh~0 Int) (SelectionSort_~rh~0 Int) (SelectionSort_~temp~0 Int)) (= (store |c_old(#memory_int)| |c_~#array~0.base| (let ((.cse1 (+ (* SelectionSort_~rh~0 4) |c_~#array~0.offset|))) (store (let ((.cse0 (select |c_old(#memory_int)| |c_~#array~0.base|))) (store .cse0 (+ (* SelectionSort_~lh~0 4) |c_~#array~0.offset|) (select .cse0 .cse1))) .cse1 SelectionSort_~temp~0))) |c_#memory_int|)) is different from true [2021-05-02 17:37:23,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:23,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,892 WARN L860 $PredicateComparison]: unable to prove that (exists ((SelectionSort_~lh~0 Int) (v_SelectionSort_~rh~0_6 Int) (v_SelectionSort_~temp~0_3 Int) (SelectionSort_~rh~0 Int) (v_SelectionSort_~lh~0_17 Int) (SelectionSort_~temp~0 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_~#array~0.base| (let ((.cse1 (+ (* SelectionSort_~rh~0 4) |c_~#array~0.offset|))) (store (let ((.cse0 (let ((.cse3 (+ (* v_SelectionSort_~rh~0_6 4) |c_~#array~0.offset|))) (store (let ((.cse2 (select |c_old(#memory_int)| |c_~#array~0.base|))) (store .cse2 (+ |c_~#array~0.offset| (* v_SelectionSort_~lh~0_17 4)) (select .cse2 .cse3))) .cse3 v_SelectionSort_~temp~0_3)))) (store .cse0 (+ (* SelectionSort_~lh~0 4) |c_~#array~0.offset|) (select .cse0 .cse1))) .cse1 SelectionSort_~temp~0))))) is different from true [2021-05-02 17:37:24,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:24,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,616 WARN L860 $PredicateComparison]: unable to prove that (exists ((SelectionSort_~lh~0 Int) (v_SelectionSort_~temp~0_4 Int) (v_SelectionSort_~rh~0_6 Int) (v_SelectionSort_~temp~0_3 Int) (v_SelectionSort_~lh~0_18 Int) (SelectionSort_~rh~0 Int) (v_SelectionSort_~lh~0_17 Int) (v_SelectionSort_~rh~0_7 Int) (SelectionSort_~temp~0 Int)) (= (store |c_old(#memory_int)| |c_~#array~0.base| (let ((.cse1 (+ (* SelectionSort_~rh~0 4) |c_~#array~0.offset|))) (store (let ((.cse0 (let ((.cse3 (+ |c_~#array~0.offset| (* v_SelectionSort_~rh~0_7 4)))) (store (let ((.cse2 (let ((.cse5 (+ (* v_SelectionSort_~rh~0_6 4) |c_~#array~0.offset|))) (store (let ((.cse4 (select |c_old(#memory_int)| |c_~#array~0.base|))) (store .cse4 (+ |c_~#array~0.offset| (* v_SelectionSort_~lh~0_17 4)) (select .cse4 .cse5))) .cse5 v_SelectionSort_~temp~0_3)))) (store .cse2 (+ (* v_SelectionSort_~lh~0_18 4) |c_~#array~0.offset|) (select .cse2 .cse3))) .cse3 v_SelectionSort_~temp~0_4)))) (store .cse0 (+ (* SelectionSort_~lh~0 4) |c_~#array~0.offset|) (select .cse0 .cse1))) .cse1 SelectionSort_~temp~0))) |c_#memory_int|)) is different from true [2021-05-02 17:37:26,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:26,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,664 WARN L860 $PredicateComparison]: unable to prove that (exists ((SelectionSort_~lh~0 Int) (v_SelectionSort_~rh~0_6 Int) (v_SelectionSort_~lh~0_19 Int) (v_SelectionSort_~lh~0_18 Int) (SelectionSort_~rh~0 Int) (v_SelectionSort_~lh~0_17 Int) (SelectionSort_~temp~0 Int) (v_SelectionSort_~temp~0_4 Int) (v_SelectionSort_~temp~0_3 Int) (v_SelectionSort_~temp~0_5 Int) (v_SelectionSort_~rh~0_7 Int) (v_SelectionSort_~rh~0_8 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_~#array~0.base| (let ((.cse1 (+ (* SelectionSort_~rh~0 4) |c_~#array~0.offset|))) (store (let ((.cse0 (let ((.cse3 (+ |c_~#array~0.offset| (* v_SelectionSort_~rh~0_8 4)))) (store (let ((.cse2 (let ((.cse5 (+ |c_~#array~0.offset| (* v_SelectionSort_~rh~0_7 4)))) (store (let ((.cse4 (let ((.cse7 (+ (* v_SelectionSort_~rh~0_6 4) |c_~#array~0.offset|))) (store (let ((.cse6 (select |c_old(#memory_int)| |c_~#array~0.base|))) (store .cse6 (+ |c_~#array~0.offset| (* v_SelectionSort_~lh~0_17 4)) (select .cse6 .cse7))) .cse7 v_SelectionSort_~temp~0_3)))) (store .cse4 (+ (* v_SelectionSort_~lh~0_18 4) |c_~#array~0.offset|) (select .cse4 .cse5))) .cse5 v_SelectionSort_~temp~0_4)))) (store .cse2 (+ (* v_SelectionSort_~lh~0_19 4) |c_~#array~0.offset|) (select .cse2 .cse3))) .cse3 v_SelectionSort_~temp~0_5)))) (store .cse0 (+ (* SelectionSort_~lh~0 4) |c_~#array~0.offset|) (select .cse0 .cse1))) .cse1 SelectionSort_~temp~0))))) is different from true [2021-05-02 17:37:28,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:28,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,702 WARN L860 $PredicateComparison]: unable to prove that (exists ((SelectionSort_~lh~0 Int) (v_SelectionSort_~rh~0_6 Int) (v_SelectionSort_~lh~0_19 Int) (v_SelectionSort_~lh~0_18 Int) (SelectionSort_~rh~0 Int) (v_SelectionSort_~lh~0_17 Int) (SelectionSort_~temp~0 Int) (v_SelectionSort_~temp~0_4 Int) (v_SelectionSort_~lh~0_20 Int) (v_SelectionSort_~temp~0_3 Int) (v_SelectionSort_~temp~0_6 Int) (v_SelectionSort_~temp~0_5 Int) (v_SelectionSort_~rh~0_7 Int) (v_SelectionSort_~rh~0_8 Int) (v_SelectionSort_~rh~0_9 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_~#array~0.base| (let ((.cse1 (+ (* SelectionSort_~rh~0 4) |c_~#array~0.offset|))) (store (let ((.cse0 (let ((.cse3 (+ |c_~#array~0.offset| (* v_SelectionSort_~rh~0_9 4)))) (store (let ((.cse2 (let ((.cse5 (+ |c_~#array~0.offset| (* v_SelectionSort_~rh~0_8 4)))) (store (let ((.cse4 (let ((.cse7 (+ |c_~#array~0.offset| (* v_SelectionSort_~rh~0_7 4)))) (store (let ((.cse6 (let ((.cse9 (+ (* v_SelectionSort_~rh~0_6 4) |c_~#array~0.offset|))) (store (let ((.cse8 (select |c_old(#memory_int)| |c_~#array~0.base|))) (store .cse8 (+ |c_~#array~0.offset| (* v_SelectionSort_~lh~0_17 4)) (select .cse8 .cse9))) .cse9 v_SelectionSort_~temp~0_3)))) (store .cse6 (+ (* v_SelectionSort_~lh~0_18 4) |c_~#array~0.offset|) (select .cse6 .cse7))) .cse7 v_SelectionSort_~temp~0_4)))) (store .cse4 (+ (* v_SelectionSort_~lh~0_19 4) |c_~#array~0.offset|) (select .cse4 .cse5))) .cse5 v_SelectionSort_~temp~0_5)))) (store .cse2 (+ (* v_SelectionSort_~lh~0_20 4) |c_~#array~0.offset|) (select .cse2 .cse3))) .cse3 v_SelectionSort_~temp~0_6)))) (store .cse0 (+ (* SelectionSort_~lh~0 4) |c_~#array~0.offset|) (select .cse0 .cse1))) .cse1 SelectionSort_~temp~0))))) is different from true [2021-05-02 17:37:30,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:30,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 702 treesize of output 640 [2021-05-02 17:37:30,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:37:32,503 INFO L244 Elim1Store]: Index analysis took 1199 ms